Answer:
0.55555556
Step-by-step explanation:
3x+y = −6 what is the slope and y-intercept
Answer:
The value of m (slope) is -3
The value of b (y-intercept) is -6
Step-by-step explanation:
First you need to isolate y:
3x + y = −6
y = -3x - 6
The value of m (slope) is -3
The value of b (y-intercept) is -6
-8(b + 11) - 4 = -3(5b - 6) - 4b
Answer: b=10
Step-by-step explanation: ((0 - 8 • (b + 11)) - 4) - (18 - 19b) = 0
Pull out like factors :
11b - 110 = 11 • (b - 10) 11 • (b - 10) = 0
b-10 = 0
Add 10 to both sides of the equation :
b = 10
How will decreasing the level of confidence without changing the sample size affect the width of a confidence interval for a population mean? Assume that the population standard deviation is unknown and the population distribution is approximately normal
Answer:
Without changing the sample size the change of CI may affect the results
Step-by-step explanation:
According to Central Limit theorem the sampling distribution is given by
Z= x`- u/ σ/√n
Z has in the limit a standard normal distribution and
x`= u ± zσ/√n
From the above
x`- z∝(σ/√n) ≤ u ≤ x`+ z∝(σ/√n)
This formula is used for the confidence interval with normal population and unknown standard deviation.
But if the different values of Z∝ are used the results will be different.
If the CI of 99% or 95% or 90% is used the values of acceptance and rejection regions change and therefore the results will change.
The value of Z∝ for
∝= 0.1 is ± 1.645
∝= 0.05 is ± 1.96
∝= 0.01 is ± 2.58
Suppose we get the calculated Z value equal 2.59 but we decrease the CI from 0.05 to 0.01 the acceptance region would become rejection region and the level of confidence will change.
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What is the image point of (-4, 1) after a translation left 1 unit and down 2 units?
Answer:
(-5,-1)
Step-by-step explanation:
Move the x coordient (-4) over to the left by 1 giving you (-5)
Move the y -axis (1) down by 2 units giving you (-1)
hope this helps :)
Ayana and Leah were trying to solve the equation:
(x- 5)^2 + 4 = 16
Ayana said, "I'll take the square root of both sides and rewrite the equation as (x-5) +2 = 4. Then I'll solve
for x"
Leah said, "Ill isolate (x - 5)^2 by subtracting 4 from both sides of the equation. Then I'll solve by taking the
square root."
Answer:
only leahs
Step-by-step explanation:
ayana is wrong
The statement given by Lean that "Ill isolate (x - 5)^2 by subtracting 4 from both sides of the equation. Then I'll solve by taking the square root." is correct way of solving an equation.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The given equation can be solved as shown below,
(x- 5)² + 4 = 16
Subtract 4 from both the sides of the equation,
(x- 5)² + 4 -4 = 16 - 4
(x- 5)² = 12
Taking square root of both the sides of the equation,
√(x- 5)² = √12
x - 5 = √12
Add 5 on both the sides of the equation,
x - 5 + 5 = √12 + 5
x = √12 + 5
Now, if both Ayana and Leah process of solving is compared with the solution above, it can be concluded that Leah is using the correct method to solve the equation.
Hence, the statement given by Lean that "Ill isolate (x - 5)^2 by subtracting 4 from both sides of the equation. Then I'll solve by taking the square root." is correct way of solving an equation.
Learn more about Equation here:
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A football team loses 5 yards on each of 4 consecutive plays. Find the total change in yards from where the team started.
Answer:
-20 yards
Step-by-step explanation:
-5 x 4 = -20 yards
PLZ help asap ill do brainliest!!!
Three cubic feet of seawater weigh 192 pounds.
What is the weight of the seawater in an aquarium that is 4.4 ft long, 2.5 ft wide, and 5.3 ft high?
Answer:
3731.2 pounds
Step-by-step explanation:
Aquarium will hold 4.4 * 2.5 * 5.3 = 58.3 cubic feet of sea water.
For 3 cubic feet of sea water, weight is 192 pounds
For 58.3 cubic feet of sea water,
( 192 * 58.3) / 3 = 11193.6 / 3 = 3731.2 pounds
Answer:
Well, I got 3731.2 :)
hope this helps
Which shows all of the like terms in the expression 4x-3+7x+1
Answer:
All the like terms include 4x + 7x, and -3 + 1
Step-by-step explanation:
They are like terms because the first two both have the same variable and the second pair both don't have variables.
what is 78 divided by 37 for my little brother.
Answer:
2.1
Step-by-step explanation:
78/37=2.10810811
Answer:
2,10
Step-by-step explanation
2,1081081081081081081081081081081
Simone was pleased with her service at a local restaurant where she had entertained some friends for dinner. She left a tip of $44 for a bill of $195.55. What tip rate did she leave for the service?
Select one:
given f (x)=-x-3,solve for x when f(x)=-2
Answer:
x=1
Step-by-step explanation:
[tex] - 2 = - x - 3[/tex]
using calculator you will get the x
Im stuckplz help Brainliest Write three equivalent ratios for each ratio. a) 5 to 6 b) 28:42 c) 3 4 :6 5
plz show work
Answer:
a) 15:18, 10:12, 20:24
b) 56:84, 14:21, 2:3
c) 68:130, 136:260, 170:325
Step-by-step explanation:
a) multiply 5 and 6 by 3
multiply 5 and 6 by 2
multiply 5 and 6 by 4
b) multiply 28 and 42 by 2
divide 28 and 42 by 2
divide 28 and 42 by 14
c) multiply 34 and 65 by 2
multiply 34 and 65 by 4
multiply 34 and 65 by 5
Alicia watched a drone take off from a bridge. The height of the drone (in meters above the ground) tttt minutes after takeoff is modeled by h(t)=−3t2+12t+96h(t)=-3t^2+12t+96h(t)=−3t2+12t+96h, left parenthesis, t, right parenthesis, equals, minus, 3, t, squared, plus, 12, t, plus, 96 Alicia wants to know when the drone will land on the ground. 1) Rewrite the function in a different form (factored or vertex) where the answer appears as a number in the equation. h(t)=h(t)=h(t)=h, left parenthesis, t, right parenthesis, equals 2) How many minutes after takeoff does the drone land on the ground?
Answer:
Step-by-step explanation:
Given the height of the drone modelled by the equation:
h(t)=-3t^2+12t+96
a) Rewriting this in a factored form.
From the equation, we can see that -3 is the greatest common factor. The equation therefore becomes:
h(t)= -3(t^2-4t-32)
Hence the function can also be written as h(t)= -3(t^2-4t-32)
b) The drone landed on the ground at when h(t) = 0. Substitute h(t) = 0 into the expression h(t)= -3(t^2-4t-32)
0 = -3(t^2-4t-32)
Divide through by -3
(t^2-4t-32) = 0
Factorize
t²+8t-4t-32 = 0
t(t+8)-4(t+8) = 0
(t-4)(t+8) = 0
t-4 = 0 and t+8 = 0
t = 4 and t = -8
Time can't be negative:
t = 4minutes
Hence it took the drone 4 minutes take off to land on the ground
Answer: 1) h(t)= -3 (t-8) (t+4)
2) 8 mins.
Step-by-step explanation: This is the correct answer. I tried.
I need help finding x
Answer:
x ≈ 24.4
Step-by-step explanation:
Since the 2 legs of the triangle are congruent, both 26, then the triangle is isosceles.
The line segment x is a perpendicular bisector and divides the isosceles triangle into 2 congruent right triangles, with base 18 ÷ 2 = 9
Using Pythagoras' identity in either of the 2 right triangles, then
x² + 9² = 26² , that is
x² + 81 = 676 ( subtract 81 from both sides )
x² = 595 ( take the square root of both sides )
x = [tex]\sqrt{595}[/tex] ≈ 24.4 ( to the nearest tenth )
If the day before yesterday, was tomorrows tomorrow's yesterday's tomorrow, then what would tomorrow's yesterday's tomorrow be?
Answer:
today
Step-by-step explanation:
ez " what would tomorrow's yesterday's tomorrow be?" this is telling us that we are thinking about yesterday
if we were to add a day to yesterday lets say its the first it would be the second lets say we were the 3rd and we add one day to yesterday we would call it today
what is the slope of (-2,-1) and (2,-3)
Answer:
The slope is -1/2
Step-by-step explanation:
What is three decimal places to 51.51488
Answer:
51514.88
Step-by-step explanation:
thats the answer
Answer:
51.515
Step-by-step explanation:
When you round a number to three decimal places, not only you need to cut your decimals to the third one, but need to examine the following (fourth decimal in this case) to decide if you need to round using the digit in the third decimal that appears, or use the following digit.
The rule is, if the following decimal is any of the following digits: 5, 6, 7, 8, or 9, you use in the rounding place one digit ABOVE the one that appears .
In our case, 51.51488 you look at the fourth decimal, and since it is an "8", you change the third decimal "4" into a "5". Leaving the following rounding:
51.515,
PLS I DONT HAVE MUCH TIMEEE!!
the quotient is 307and the remainder is 2
please help i will give brainliest
Answer:
the opposite of 8
Step-by-step explanation:
To find 50% of a number, divide the number by
To find 25% of a number, divide the number by
To find 10% of a number, divide the number by
First is ✨2
Second is✨4
Third is✨10
The Correct Answer Is Below Answering The Follwing Question.
-2-
-4-
-10-
Have A Blessed Day!
The answers are To find 50% of a number, divide the number by 2, To find 25% of a number, divide the number by 4 and To find 10% of a number, divide the number by 10.
What is percentage?A percentage is a number that tells us how much out of 100 and can also be written as a decimal or a fraction.
Given that, by what we should divide to the give expression to get 25%, 50% and 10%
Converting the percentage into fractions,
To change the percentage to a fraction, put the percentage number in the numerator and 100 in the denominator.
50% = 50/100 = 1/2, so we will divide it by 2,
25% = 25/100 = 1/4, so we will divide it by 4,
10% = 10/100 = 1/10, so we will divide it by 10.
Hence, The answers are To find 50% of a number, divide the number by 2, To find 25% of a number, divide the number by 4 and To find 10% of a number, divide the number by 10.
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which quadrant would 6,-4 be in ?
Answer:
IV
Step-by-step explanation:
Answer:
The Quadrent it would be in would be the bottom right.
Step-by-step explanation:
Go over 6 units on the x axis, then go down 4 (because it is a negative).
Please help...............................
Answer:
6%
Step-by-step explanation:
Answer: answer is 8 because when you divide 100 by 6 that give you 16 then you divide it by 2 which is 8
Step-by-step explanation:
There are 6 triangles and 2 circles. What is the simplest ratio of circles to triangles?
Answer:
6:2
Step-by-step explanation:
Answer:
6:2
Step-by-step explanation:
This simply means for every 6 triangles there are going to be 2 circles, so if you had 12 triangles there would be 4 circles.
So think of it kinda like:
6 triangles = 2 circles and so on.
What is 11.77 divided by 1.1
Answer: 10.7
Step-by-step explanation:
Just use a calc
The probability that a certain brand of watch is defective is 6%. If 2 watches of this brand are randomly selected, then what is the probability that: None will be defective
Answer: The probability that: None will be defective = 0.8836
Step-by-step explanation:
Let x be the number of defectives watch.
As per given: p= 6%= 0.06 (probability of defective)
Sample size : n= 2
Binomial probability distribution formula : [tex]P(X=x)=^nC_xp^x(1-p)^{n-x}[/tex]
P(No defective)=P(X=0)
[tex]^{2}C_0(0.06)^0(1-0.06)^{2} =(1)(0.94)^2=0.8836[/tex]
Hence, The probability that: None will be defective = 0.8836
George buys oranges and apples at a ratio of 3:4 for his party. If he has 15 oranges, how many apples does he have?
Answer: 20 apples
Step-by-step explanation:
If 15 oranges is represented as 3, this means it was divided by 3.
15 ÷ 3 = 5
Now, get the number 5 and multiply it by 4.
5 × 4 = 20
The answer is 20 apples. Hope this helps!
A game has 9rows of playing cards .there are 8 cards in each row how many playing are there
Answer:
72 cards
Step-by-step explanation:
There are 8 playing cards in each row, with 9 rows in all.
To solve, simply multiply the two numbers together:
8 playing cards per row x 9 rows = 72 playing cards in all.
72 cards is your answer.
~
Answer:
73
Step-by-step explanation:
9 rows of cards with 8 each, so you would do- 9 x 8 = 72
I need help on estimation
please show me your working out I don't know what to do
will mark brainiest
Answer:
The estimate is 601.11984282
hope this helps :)
Answer:
310
Step-by-step explanation:
9.87 = 10 its 10 because 87 is over 50 so its closer to 10
0.509 = 1 50 is close to 100 which is 1
31 times 10 = 310
310 divide by 1
equals 310
the approximate mass of Mars is 6.42x10^23 kilograms. write this mass in standard notation
Answer:
642000000000000000000000 kg
Step-by-step explanation:
The approximate mass of Mars is 6.42x10^23 kilograms. It is given in scientic notation.
We need to write the mass in standard notation. It is the normal way of writing any number. To write it in standard form, we move the decimal to the right side.
The standard form will be :
6.42x10^23 kg = 642000000000000000000000 kg
Hence, this is the required solution.
