A) The probability of being shortlisted for interviews - 1/5
B) The probability of being shortlisted for interviews and employed as the managing director - 1/10
C) The probability of being employed as managing director, given that the applicant has been shortlisted - 1/10
D) The probability of being shortlisted and not employed as managing director - 9/10
E) The probability of not being shortlisted for interviews - 4/5
Why is this so?A. Shortlisted for interviews
The probability that an applicant selected at random will be shortlisted for interviews is 10/50 = 1/5.
B. Shortlisted for interviews and employed as the managing director
There is only one managing director position, and 10 applicants were shortlisted for interviews.
So, the probability that an applicant selected at random will be shortlisted for interviews and employed as the managing director is 1/10.
C. Employed as managing director, given that he has been shortlisted for interviews
By definition of conditional probability,
p(M|S) = p(M\cap S)/p(S)
=(1/50)/(1/5)
=1/10.
D. Shortlisted and not employed as managing director
The probability that an applicant selected at random will be shortlisted and not employed as managing director is 9/10.
This is because there are 9 applicants who were shortlisted for interviews but not employed as managing director.
E. Not shortlisted for interviews
The probability that an applicant selected at random will not be shortlisted for interviews is
40/50 = 4/5.
This is because 40 applicants were not shortlistedfor interviews.
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Full Question:
Although part of your question is missing, you might be referring to this full question:
A company advertised for a position of managing director the number of applications for position were 50 ,out which 10 were shortlisted for interview,. Determine the probability that an applicant selected at random will be :
A, shortlisted for interviews
B, shortlisted for interviews and employed as the managing director
C , employed as managing director, given that he has been shortlisted for interviews
D, shortlisted and not employed as managing director
E, not shortlisted for interviews.
If two different signs are multiplied, the product is obtained with then multiply the product obtained with another negative Sign. Live the last sign you will obtain.
If two different signs are multiplied, the product obtained should be multiplied by another negative sign. We would then get the last sign as positive.
When two different signs are multiplied, the product obtained should be multiplied by another negative sign. When two different signs are multiplied, we obtain either a positive or negative product depending on the signs. If both signs are positive, the product is positive. If both signs are negative, the product is also positive.
However, if two different signs are multiplied, the product is negative. This is the first step in answering the question.
After we obtain a negative product by multiplying two different signs, we are to multiply this product with another negative sign. Multiplying a negative product with another negative sign would yield a positive result. This is because the product of two negatives is positive.
To understand this concept, we can use numbers as examples. Let us say we want to multiply -5 and 7. The product of -5 and 7 is -35 since we are multiplying two different signs. Now we are to multiply this product with another negative sign, say -1. Multiplying -35 and -1, we obtain +35, which is the answer to the problem.
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Question 1 of 5
Which equation represents the measure of the unknown angles?
C
D
xº
E
D.
50°
(x+10)
F
OA. I + I + 10 = 130°
B. I + I + 10 = 180°
C.
+ 10 = 180°
+ 10 = 130°
The required formula to find the missing angles in the triangle is x + x + 10 = 130
The sum of angles in a triangleThe sum of angles in a triangle gives us 180°, Mathematically, this gives :
A + B + C = 180°50 + x + (x + 10) = 180
50 + x + x + 10 = 180
x + x + 60 = 180
x + x + 10 = 180 - 50
x + x + 10 = 130
Therefore, the required formula is x + x + 10 = 130
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3.28 to nearest thousandth
Answer:
3.280
Step-by-step explanation:
When your rounding your answer the thousandths place is the 3rd number away from the decimal point so that means that 3.28 would be 3.280 rounded to the nearest thousandth.
Need help please and thanks
Since line a and line c are parallel and line c and line b are perpendicular, then the value of angle 2 is 90°
What are perpendicular lines?A line can be defined as a straight set of points that extend in opposite directions.
Parallel lines are lines that never intersect, and they form the same angle when they cross another line.
When a straight vertical line crosses another straight horizontal line we say the two lines are perpendicular.
Perpendicular lines intersect at a 90-degree angle, forming a square corner.
Therefore the value of angle 2 is 90°.
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What is the answer to this problem?
Determine the intercepts of the line.
X intersept (_,_)
Y intersept (_,_)
50 Points! Multiple choice geometry question. Photo attached. Thank you!
The missing outcome is TT, where both coin tosses result in tails. Option B.
When a coin is tossed twice, there are four possible outcomes: HH, HT, TH, and TT. Each toss of the coin can result in either a head (H) or a tail (T). Let's analyze the given options to determine which one is missing.
TH is not the missing outcome since it is already listed as one of the possible outcomes.
TT is the missing outcome. It represents the scenario where both coin tosses result in tails.
HT is not the missing outcome since it is already listed as one of the possible outcomes.
TH is also not the missing outcome since it is the same as option (A).
Therefore, the missing outcome is TT, which represents the scenario where both coin tosses result in tails. So Option B is correct.
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a water snake in a well is 30 M below the ground level its lights 20 m upward and then slips down 10 M how far it is from the ground level
[tex] - 30 - + 20 - - 10[/tex]
If the water snake is initially 30 meters below the ground level and then climbs 20 meters upward, it will be 30 - 20 = 10 meters below the ground level. However, if it then slips down 10 meters, it will be 10 + 10 = 20 meters below the ground level.
The blank is a plot of paired data (x,y) and is helpful in degerming whether there is a relationship between the two variables 
Step-by-step explanation:
Scatter plot is the correct answer
Which set of values could be the side length of a 30 60 90 triangle? A. {5,5v3,10}
Therefore, the answer is A. {5, 5√3, 10}.
The set of values {5, 5√3, 10} could be the side lengths of a 30-60-90 triangle.
In a 30-60-90 triangle, the sides are in a specific ratio. The ratio is 1 : √3 : 2, where the shortest side (opposite the 30-degree angle) has length x, the side opposite the 60-degree angle has length x√3, and the hypotenuse (opposite the 90-degree angle) has length 2x.
Let's check if the given set of values satisfies this ratio:
If x= 5, then the side opposite the 60-degree angle should be 5√3, and the hypotenuse should be 10. These values match the ratio, so the set {5, 5√3, 10} could be the side lengths of a 30-60-90 triangle.
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After three days, a group of hikers discovers that they have used 2/5 of their supplies. At this rate, how many days can they go forward before they have to turn around?
Answer:
hikers can travel before they have to turn around be "d" days. Also, let's represent the supplies the hikers have with "s."Given that after three days the hikers used 2/5 of their supplies, we can say that they have 3/5 of their supplies left. Hence,3/5s = Supplies remaining after 3 days, which means that2/5s = Supplies used in the first 3 daysWe need to find the number of days the hikers can travel before they have to turn around. So, we can say that the ratio of supplies used to the number of days traveled will be equal to the ratio of supplies remaining to the number of days remaining.2/5s ÷ 3 = (3/5s) ÷ dWe can simplify the above expression to find d as:d = (3/2) × 3/5 = 9/10 daysTherefore, the hikers can go forward for 9/10 days before they have to turn around.
If C = 4 feet and h = 5.25 feet, what is the area of the triangle opening?
The area of the triangle opening, with a base of 4 feet and a height of 5.25 feet, is 10.5 square feet.
To find the area of the triangle opening, we can use the formula for the area of a triangle, which is given by A = (1/2) * base * height. In this case, the base and height of the triangle are represented by the variables C and h, respectively.
Given that C = 4 feet and h = 5.25 feet, we can substitute these values into the formula:
A = (1/2) * 4 feet * 5.25 feet
Simplifying the expression, we have:
A = 2 feet * 5.25 feet
A = 10.5 square feet
Therefore, the area of the triangle opening is 10.5 square feet.
In conclusion, with a base of 4 feet and a height of 5.25 feet, the triangle opening has an area of 10.5 square feet.
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18
Select the correct answer.
Given that a function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) S 45 and that g(0) = -2 and g(-9) = 6, select the
statement that could be true for g.
A.
B.
C.
D.
g(-4)=-11
g(7) = -1
g(-13) = 20
g(0) = 2
Reset
Next
G
Since function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45 and that g(0) = -2 and g(-9) = 6, the statement that could be true for g is: A. g(-13) = 20.
How to determine the true statement for function g?Based on the information provided in this scenario, the domain and range of this function g(x) in interval notation are as follows:
Domain = -20 ≤ x ≤ 5 or [-20, 5]
Range = -5 ≤ g(x) ≤ 45 or [-5, 45]
Function g(0) = 2 is simply a false statement because it was explicitly stated that g(0) = -2. Additionally, g(-4) = -11 is a false statement because it is outside the scope of the given range for this function.
Furthermore, the function g(7) = -1 is a false statement because it is not within the domain for the given function. However, we can logically deduce that the function g(-13) = 20 is a true statement because it is within the domain for the given function and it would produce an output that is within the scope of the given range for this function.
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In fractions, what does the "^" symbol stand for? Such as in 1200 x (1.0041666667) ^ 48
Answer: The caret symbol (^) represents a power.
Step-by-step explanation:
In short, a power or an exponent indicates the number of times a number needs to be multiplied by itself. The caret can be used to represent a number that is to be used as an exponent.
For example, 5^2 is the same thing as [tex]5^2[/tex]. [tex]5^{2} =[/tex] 5 x 5 = 25.
In the example you provided, 1200 x (1.0041666667) ^ 48, the caret means that you need to raise 1.0041666667 to the power of 48.
Use the picture to answer the question
The reason that can be used to prove that AC ≅ BC is: B. AC and BC are radii of the same circle and AB and AC are radii of the same circle. So, AB ≅ AC and AB ≅ BC.
What is a circle?In Mathematics and Geometry, a circle simply refers to the set of all points in a plane that are located at a fixed distance (radius) from a fixed point (central axis), and a full circle always has a measure of 360 degrees.
Generally speaking, an equilateral triangle is a special type of triangle that has equal side lengths and all of its three (3) interior angles are equal.
Since line segments AC and BC and AB and AC are radii of the same circle, we can logically deduce the following congruent side lengths;
AB ≅ AC (Radii of same circle are equal)
AB ≅ BC (Radii of same circle are equal)
AC ≅ BC (Q.E.D)
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100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Answer:
16.
Solution Given:
r=16
s=30
t=34
We have
Sine =Opposite/Hypotenuse
Cosine =adjacent/hypotenuse
Tangent = opposite/adjacent
By using this
we can easily find the ratio:
Sin R= opposite/hypotenuse=r/t=16/34=8/17
Cos R =adjacent/hypotenuse=s/t=30/34=15/17
Tan R= opposite/adjacent= r/s=16/30=8/15
Sin S= opposite/hypotenuse=s/t=30/34=15/17
Cos S=adjacent/hypotenuse=r/t=16/34=8/17
Tan S= opposite/adjacent=s/r=30/16=15/8
Grapes are on sale for $0.98 per pound and Bart wants to purchase 4 pounds of grapes. How much will he spend?
$3.82
$3.91
$3.92
$3.93
Answer:
The answer is $3.91 hope it is help you
Puerto rico saw a population decrease of 11.8% since 2010 if the population of Puerto Rico in 2010 was approximately 3.72 million people right in exponential equation to model Puerto Rico's population in millions after t years
The exponential equation to model Puerto Rico's population in millions after t years is:
[tex]P(t) = 3.72 \times e^(^-^0^.^1^1^8^t^).[/tex]
To model Puerto Rico's population in millions after t years using an exponential equation, we can use the following formula:
[tex]P(t) = P₀ \times e^(^r^t^),[/tex]
where:
P(t) is the population at time t,
P₀ is the initial population (in 2010),
e is the base of the natural logarithm (approximately 2.71828), and
r is the growth rate.
Given that the population of Puerto Rico in 2010 was approximately 3.72 million people, we can substitute P₀ = 3.72 into the equation.
Now, to determine the growth rate (r), we need to consider the population decrease of 11.8% since 2010. We can convert this percentage into a decimal by dividing it by 100, so 11.8% becomes 0.118.
Since the population decreased, we use a negative growth rate, so r = -0.118.
Therefore, the exponential equation to model Puerto Rico's population in millions after t years is:
[tex]P(t) = 3.72 \times e^(^-^0^.^1^1^8^t^).[/tex]
This equation takes into account the initial population in 2010 and the negative growth rate to project the population in millions for any given year (t) after 2010.
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Pedro’s book weighs 19 4 pounds. Blanca’s book weighs 17 7 pounds. Use estimation to determine about how much more Pedro’s book weighs than Blanca’s. 1 lb 2 lbs 6 lbs 7 lbs
Pedro's book weight approximately 2 pound more than Blanca's book.
The correct answer is B.
Weight of Pedro's book = [tex]\frac{19}{4}[/tex]
= [tex]4.7[/tex]
Weight of Blanca's book = [tex]\frac{17}{7}[/tex]
= [tex]2.4[/tex]
We have to determine how much more Pedro's book weight than Blanca's using estimation
Difference between weight of book of Pedro and Blanca = [tex]4.7 - 2.4[/tex]
= [tex]2.3[/tex]
Difference between weight of book of Pedro and Blanca= [tex]2.3 \approx 2Ibs[/tex]
Hence, the weight of Pedro's book is 2 lbs more than the weight of Blanca's book.
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Find the area of the rectangle shown
7 1/2 ft
5 1/4ft
Answer:
39 3/8 ft ^2
Step-by-step explanation:
To find the area of a rectangle, multiply the length times the width.
A = l*w
= 7 1/2 * 5 1/4
Change the mixed numbers to improper fractions.
A = 15/2 * 21/4
=315/8
Change back to a mixed number.
8 goes into 315 39 times with 3 left over.
= 39 3/8
Answer:
Area = 39.375 ft²
(you can round to 39.4)
Step-by-step explanation:
Find the area of the rectangle shown
7 1/2 ft
5 1/4ft
7 1/2 = 7.5 ft
5 1/4 = 5.25 ft
Area = L x W
Area = 7.5 x 5.25
Area = 39.375
en una feria venden 8 plátano al mismo precio que 6 duraznos, 4 duraznos lo mismo que 10 nísperos. Una docena de nísperos al mismo precio que 2 piñas, si 10 piñas cuestan S/.320, ¿cuánto pagaré por 2 plátanos, 3 duraznos y una piña?
You will pay S/.80 for 2 bananas, 3 peaches, and a pineapple.
How to solveLet the price of a banana be b, a peach p, a medlar m, and a pineapple P in Peruvian soles.
From the information, 8b=6p, 4p=10m, 12m=2P, and 10P=S/.320.
From these equations, we have p=4b/3, m=p/2=2b/3, and P=6m=4b.
Substituting for P, 10(4b)=320, so b=8. Hence, p=32/3, m=16/3, and P=32.
For 2 bananas, 3 peaches and a pineapple, the total cost is 2b+3p+P = 2(8) + 3(32/3) + 32 = 16 + 32 + 32 = S/.80.
Therefore, you will pay S/.80 for 2 bananas, 3 peaches, and a pineapple.
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The Question in English
At a fair they sell 8 bananas at the same price as 6 peaches, 4 peaches the same as 10 medlars. A dozen medlars at the same price as 2 pineapples, if 10 pineapples cost S/.320, how much will I pay for 2 bananas, 3 peaches and a pineapple?
Suppose the production costs for a certain item is given by [tex]C(p)= 8p^3-16p^2+4p+72[/tex] dollars where p units are produced each hour. Estimate the cost, in dollars, to produce the 10-th unit of that item
The cost to produce the 10-th unit of that item is 6512
Estimating the cost to produce the 10-th unit of that itemFrom the question, we have the following parameters that can be used in our computation:
C(p) = 8p³ -16p² + 4p + 72
For the 10-th unit of that item, we have
p = 10
substitute the known values in the above equation, so, we have the following representation
C(10) = 8 * 10³ -16 * 10² + 4 * 10 + 72
Evaluate
C(10) = 6512
Hence, the cost is 6512
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Marama is planting a rectangular garden in her backyard. She is planning to fence the garden with 28 feet of wired fencing. The garden's area can be represented by the function A(t) = -t2+ 14t where t is the length of a side. What are all of the appropriate values of the domain for the graph of this function? Explain your answer in terms of the situation. Use words, numbers, and/or pictures to show your work.
The domain for the function is the interval [0, 14], which represents the feasible values for the length of one side of the rectangular garden.
To determine the appropriate values of the domain for the graph of the function [tex]A(t) = -t^2 + 14t[/tex], we need to consider the situation and the constraints given.
The function A(t) represents the area of the rectangular garden as a function of the length of one of its sides, which is denoted by t.
We are also told that Marama plans to fence the garden with 28 feet of wired fencing.
Now, let's break down the problem and find the appropriate values for the domain.
We know that the perimeter of a rectangle is the sum of all its sides. In this case, since we have a rectangular garden, the perimeter can be represented as:
[tex]Perimeter = 2t + 2w[/tex],
where t is the length of one side (the width) and w is the length of the other side (the width).
The problem states that Marama plans to use 28 feet of wired fencing. Therefore, the perimeter of the garden must equal 28 feet:
[tex]2t + 2w = 28[/tex].
Simplifying this equation, we have:
[tex]t + w = 14[/tex].
We can express w in terms of t as [tex]w = 14 - t[/tex].
The area of a rectangle is given by the product of its length and width:
[tex]Area = t \times w[/tex].
Substituting the expression for w from step 2, we have:
[tex]A(t) = t \times (14 - t)[/tex].
Simplifying further:
[tex]A(t) = 14t - t^2[/tex].
To determine the appropriate values of the domain, we need to consider the context of the problem. Since we are dealing with a physical garden, both the length and width must be positive numbers. Additionally, the values of t must be feasible given the constraints of the perimeter.
We know that [tex]t + w = 14[/tex], so [tex]t + (14 - t) = 14[/tex], which simplifies to [tex]14 = 14[/tex].
This shows that the value of t can range from 0 to 14, inclusive.
Therefore, the appropriate values of the domain for the graph of the function [tex]A(t) = -t^2 + 14t[/tex] are [tex]t \epsilon [0, 14][/tex].
To illustrate this graphically, we can plot the function [tex]A(t) = -t^2 + 14t[/tex] and mark the appropriate values of the domain on the x-axis (representing t):
^
|
A(t)|
|
|_______________________________
0 t 14
The domain for the function is the interval [0, 14], which represents the feasible values for the length of one side of the rectangular garden.
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Total number of working days in school was 212 in a year. Akhilesh was absent for 50 days. Find his attendance percent for the year
Answer:
Step-by-step explanation:
Given,
Total number of working days in a year = 212
No of absent days = 50
No. of present days = Total number of working days - No of absent days
= 212-50
= 162
Attendance Percentage = (No.of present days)/(Total number of working days in a year) * 100
= 162*100/212
= 76.415 %
An aquarium tank holds 285 liters of water. How much is this in gallons? Use the following conversion: 1 gallon is 3.8 liters.
Suppose that 12 inches of wire costs 72cents.
At the same rate, how much (in cents) will 9 inches of wire cost?
9 inches of wire will cost 54 cents.
To convert liters to gallons, we'll use the given conversion rate:
1 gallon is equal to 3.8 liters.
To find the number of gallons in 285 liters, we divide 285 by 3.8:
285 liters / 3.8 liters per gallon = 75 gallons
Therefore, 285 liters is equal to 75 gallons.
Now, let's calculate the cost of 9 inches of wire using the given rate of 12 inches costing 72 cents.
The cost per inch of wire can be found by dividing 72 cents by 12 inches:
72 cents / 12 inches = 6 cents per inch
To find the cost of 9 inches of wire, we multiply the cost per inch by 9:
6 cents per inch * 9 inches = 54 cents
Therefore, 9 inches of wire will cost 54 cents.
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Find the open intervals on which the function f(x)= x+10sqrt(9-x) is increasing or decreasing.
The function f(x) = x + 10√(9 - x) is increasing on the interval (-∞, 9) and decreasing on the interval (9, ∞).
To determine the intervals on which the function is increasing or decreasing, we need to find the derivative of the function and analyze its sign.
Let's find the derivative of the function f(x) = x + 10√(9 - x) with respect to x.
f'(x) = 1 + 10 * (1/2) * (9 - x)^(-1/2) * (-1)
= 1 - 5√(9 - x) / √(9 - x)
= 1 - 5 / √(9 - x).
To analyze the sign of the derivative, we need to find the critical points where the derivative is equal to zero or undefined.
Setting f'(x) = 0:
1 - 5 / √(9 - x) = 0
5 / √(9 - x) = 1
(√(9 - x))^2 = 5^2
9 - x = 25
x = 9 - 25
x = -16.
The critical point is x = -16.
We can see that the derivative f'(x) is defined for all x values except x = 9, where the function is not differentiable due to the square root term.
Now, let's analyze the sign of the derivative f'(x) in the intervals (-∞, -16), (-16, 9), and (9, ∞).
For x < -16:
Plugging in a test value, let's say x = -17, into the derivative:
f'(-17) = 1 - 5 / √(9 - (-17))
= 1 - 5 / √(9 + 17)
= 1 - 5 / √26
≈ 1 - 0.97
≈ 0.03.
Since f'(-17) is positive, the function is increasing in the interval (-∞, -16).
For -16 < x < 9:
Plugging in a test value, let's say x = 0, into the derivative:
f'(0) = 1 - 5 / √(9 - 0)
= 1 - 5 / √9
= 1 - 5 / 3
≈ 1 - 1.67
≈ -0.67.
Since f'(0) is negative, the function is decreasing in the interval (-16, 9).
For x > 9:
Plugging in a test value, let's say x = 10, into the derivative:
f'(10) = 1 - 5 / √(9 - 10)
= 1 - 5 / √(-1)
= 1 - 5i,
where i is the imaginary unit.
Since the derivative is not a real number for x > 9, we cannot determine the sign.
Combining the information, we conclude that the function f(x) = x + 10√(9 - x) is increasing on the interval (-∞, 9) and decreasing on the interval (9, ∞).
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help me please please please
The angle measures for this problem are given as follows:
a = 62º.b = 118º.c = 62º.d = 62º.How to obtain the angle measures?The sum of the measures of the internal angles of a triangle is of 180º.
The triangle in this problem is ABC, hence the measure of a is obtained as follows:
a + 68 + 50 = 180
a = 180 - (68 + 50)
a = 62º.
c and d are corresponding angles to angle a, as they are on the same position relative to parallel lines, hence their measures are given as follows:
c = 62º.d = 62º.Angle b is a corresponding interior angle with angle a, hence they are supplementary and it's measure is given as follows:
a + b = 180
62 + b = 180
b = 118º.
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PLEASE HELP I WILL GIVE BRAINLIST
Step-by-step explanation:
Similar triangle ratio
4 is to 10 as ? is to 15
4/10 = ?/15
15 * 4/10 = ? = 6 units
HELP AS SOON AS POSSIBLE
The correct option is the third one.
The new vertices are:
(-4, -1), (0, -1). (-4, -3)
How to find the new vertices?For a point (x, y), a rotation of 90° counterclockwise changes a quadrant, and changes the coordinates to (-y, x)
So, for the point (-1, 4) which is on the second quadrant, it will move it to the third quadrant, so the new point is (-4, -1)
For the second point:
(-1, 0)
It is on the second quadrant, and we go to the third one again, the new point is (0, -1)
Finally_
(-3, 4) --> (-4, -3)
Then the correct option is the third option.
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Help pleaseeeeeee I really need help..
Answer:
23 gallons per minute
Step-by-step explanation:
The Volume of Water = 1380 gallons
Time = 1 hour
Since we want to determine the rate at which the water is flowing out of the pipe in gallons per minute, we convert our time from hour to minutes.
1 hour = 60 Minutes
Rate= Volume ÷ Time
= 1380 ÷ 60
=23 gallons per minute
The water is flowing out of the pipe at a rate of 23 gallons per minute.
im propably wrong but yu can try this out!! :)
code: M74 E allowed Second chance! Review your workings and see if you can correct your mistake. A parallelogram is shown below. Work out the size of the angle marked c. 46° C Not drawn accurately
Angle a + Angle d = 180 degreesAngle b + Angle c = 180 degrees.
In a parallelogram, adjacent angles are supplementary. As a result, we can express c in terms of the angles adjacent to it as follows: Angle a + Angle c = 180 degreesAngle c + 46 degrees = 180 degreesAngle c = 180 degrees - 46 degrees = 134 degreesTherefore, the size of angle c is 134 degrees.
A parallelogram is a four-sided quadrilateral that has opposite sides parallel and equal in length. Each of the opposite angles is also equal in size.In general, if we label the angles of a parallelogram as follows: Angle a, Angle b, Angle c, and Angle d,.
we have the following:Angle a = Angle c (opposite angles are equal)Angle b = Angle d (opposite angles are equal)Adjacent angles in a parallelogram are supplementary, which means they add up to 180 degrees.
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