Answer:
1/2 hour
Step-by-step explanation:
I am assuming you meant "lives 5km"
The first km would take 1/4 an hour because she is going 4km/h for one hour. One hour she would go 4km but we only need 1 mile so it would be cut to a fraction.
The same fraction goes for the bus. 4 is 1/4 of 16 so you would have to add them together and have 1/2 and hour to get home.
There are 25 students in a class. Sixteen of those students are boys. What percent of the class are girls?
Answer:
36% of the students are girls
Step-by-step explanation:
(Boys) 16/25 = 64%
(Girls) 9/25 = 36%
Answer:
36%
Step-by-step explanation:
you first do 25 minus 16 to find out how many girls are in the class which is 9
now u do 9/25 = ?/100 to find out the percent of girls
9 times 100 divided by 25 which gives u 36%
hope this helps
Solve the equation.
C +9 = 3.7
Answer:
C= -5.3
Hope this helps!
Brainliest?
Answer:
C = -5.3
Step-by-step explanation:
C+9=3.7
Subtract 9 from both sides
C+9-9=3.7-9
Simplify
C = -5.3
Which is the graph of the equation ? y-1=2/3(x-3)?
A function assigns values. The graph of the equation y-1=2/3(x-3) is the second graph.
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
As the function is given to us that y-1=2/3(x-3), now substitute the value of x as 0 and y as 0 to get the intercept of the function. Therefore,
x-intercept
[tex]y-1=\dfrac23(x-3)\\0-1= \dfrac23x-\dfrac23(3)\\\\-1 = \dfrac23x - 2\\\\-1+2 = \dfrac23x\\\\x = \dfrac32[/tex]
y-intercept
[tex]y-1=\dfrac23(x-3)\\\\y-1=\dfrac23(0-3)\\\\y-1=\dfrac23(-3)\\\\y= -2+1\\\\y=-1[/tex]
Thus, we need to look for the graph which intersects the x-axis at 3/2 while the y-axis at -1. Therefore, as shown the below graph.
Hence, the graph of the equation y-1=2/3(x-3) is the second graph.
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In one lottery, a player wins the jackpot by matching all five numbers drawn from white balls (1 through 41) and matching the number on the gold ball (1 through 31). If one ticket is purchased what is the probability of winning the jackpot?
(Type answer as an integer or a simplified fraction)
Answer:
1 / 2,787,760,560
Step-by-step explanation:
The number of permutations is:
41 × 40 × 39 × 38 × 37 × 31 = 2,787,760,560
So the probability of winning the jackpot is 1 / 2,787,760,560.
The Interplanet Space Centre is planning to launch a probe which will travel from Earth to Mars, on to Jupiter and then to Saturn. Distance from Earth to Mars 78 300 000 km Distance from Mars to Jupiter 550 400 000 km Distance from Jupiter to Saturn 648 700 000 km million km
Estimate to the nearest million how far it will travel on its journey.
Answer:
1,300,000,000
Step-by-step explanation:
78 300 000
550 400 000
648 700 000
1 277 400 000
To the nearest million
1,2 | 77 400 000 more than 4, so +1
1,300,000,000
Pick 3 cards from a standard 52-card deck. Find the P(of at least 1 red card).
Does this experiment represent a binomial probability situation? Explain why or why not.
Answer:P(BBR) = 1/2 × 25/51 × 26/50 = 13/102 if cards are not replaced.
P(RBB) = 1/2 × 26/51 × 25/50 (simplified 1/2) = 13/102
P(BRB) = 1/2 × 26/51 ×25/50 (simplified 1/2) = 13/102
Step-by-step explanation: P(B) at first step is 26 cards out of a possible 52 therefore 26/52 (or simplified 1/2). We then have 25 black cards left out of a possible 51 therefore 25/51. The final card then has to be red to meet the criteria, we have 26 red cards still out of a possible 50 therefore 26/50.
This would be an example of binomial probability as at each step there are only 2 options R or B.
Sloane kicked a soccer ball at a speed of 48 feet per second. If the ball never leaves the ground, then it can be represented by the function H(t) = −16t2 + 48t. Determine the time the ball traveled. t = 0.33 seconds t = 3 seconds t = 16 seconds t = 48 seconds
Answer:
t = 3 seconds
Step-by-step explanation:
I took the test and i got it right.
The time the given ball traveled for is required.
The time the ball traveled was t = 3 seconds
Equation of motionThe given equation is [tex]H(t)=-16t^2+48t[/tex]
The ball never leaves the ground so the height of the ball is 0.
[tex]0=-16t^2+48t[/tex]
Solving the equation we get
[tex]-48t=-16t^2[/tex]
Dividing the equation by [tex]t[/tex] on both sides
[tex]\Rightarrow 48=16t[/tex]
Dividing the equation by 16 on both sides
[tex]\Rightarrow t=\dfrac{48}{16}\\\Rightarrow t=3\ \text{s}[/tex]
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When you add two rational numbers, each number
can be written as a ?
What is the minimum and maximum whole number side length for △ABC with given side lengths of 9 cm and 11 cm? Please explain why
Answer:
Step-by-step explanation:
We would assume that triangle ABC is a right angled triangle. This means that we can apply Pythagoras theorem in determining the unknown side length.
For the case of the minimum side length, we would assume that the unknown length, L is one of the shorter legs of the triangle. By applying Pythagoras theorem, it becomes
11² = 9² + L²
L² = 121 - 81 = 40
L = √40 = 6.32
For the case of the maximum side length, we would assume that the unknown length, L is one of the hypotenuse of the triangle. By applying Pythagoras theorem, it becomes
L² = 9² + 11²
L² = 81 + 121 = 202
L = √202 = 14.21
The minimum side length is 6.32 and the maximum side length is 14.21
ssume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find the probability of obtaining a reading between -1.94°C and -1.5°C.
Answer:
[tex]P(-1.94<X<-1.5)=P(\frac{-1.94-\mu}{\sigma}<\frac{X-\mu}{\sigma}<\frac{-1.5-\mu}{\sigma})=P(\frac{-1.94-0}{1}<Z<\frac{-1.5-0}{1})=P(-1.94<z<-1.5)[/tex]
And we can find this probability with this difference:
[tex]P(-1.94<z<-1.5)=P(z<-1.5)-P(z<-1.94)=0.0668-0.026= 0.0408[/tex]
Step-by-step explanation:
Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:
[tex]X \sim N(0,1)[/tex]
Where [tex]\mu=0[/tex] and [tex]\sigma=1[/tex]
We are interested on this probability
[tex]P(-1.94<X<-1.5)[/tex]
And using the z score formula given by:
[tex]z=\frac{x-\mu}{\sigma}[/tex]
And using this formula we got:
[tex]P(-1.94<X<-1.5)=P(\frac{-1.94-\mu}{\sigma}<\frac{X-\mu}{\sigma}<\frac{-1.5-\mu}{\sigma})=P(\frac{-1.94-0}{1}<Z<\frac{-1.5-0}{1})=P(-1.94<z<-1.5)[/tex]
And we can find this probability with this difference:
[tex]P(-1.94<z<-1.5)=P(z<-1.5)-P(z<-1.94)=0.0668-0.026= 0.0408[/tex]
what does a shape need to be a prallelogram?
Answer: Needs to be flat with opposite sides that are parallel and are the same in length
A circle has a diameter of 10 feet. What is the area of the circle? Leave answers in terms of π.
Answer:
25pi
Step-by-step explanation:
If the circle has a diameter of 10, it has an radius of 5. The area of a circle is pi*r^2. If r=5, then it is 25pi.
Answer:
25π feet^2
Step-by-step explanation:
The area of a circle can be found using the following formula.
a=πr^2
We are given the diameter, but we need to find the radius. The radius is half of the diameter, or
r=d/2
We know the diameter is 10 feet. Therefore, we can substitute 10 in for d.
r=10/2
Divide 10 by 2
r=5
The radius is 5 feet.
Now we know the radius, and can substitute it into the area formula.
a=πr^2
r=5
a=π*5^2
Evaluate the exponent.
5^2 is equal to 5*5, which is 25.
a=π*25
a=25π
Add appropriate units. Area always uses units^2, and the units in this problem are feet.
a=25π feet^2
The area of the circle is 25π square feet
Find the equation of the line that passes through (−4, 8) with slope −3. Write in slope-intercept form. F y = – 3x – 4 G y = – 4x + 3 H y = 3x + 4 J y = 4x – 3
Answer: y=-3x-4
Step-by-step explanation:
Since we know slope, we can plug it into slope-intercept form to find the y-intercept by using the given points,
y=-3x+b
8=-3(-4)+b
8=12+b
b=-4
Now that we know the y-intercept, we can complete the slope-intercept form.
y=-3x-4
The football team makes a profit of 20% on all sales of jerseys. During one season, the total sales on jerseys were $2625. How much was the profit?
Answer:
2625*0.2= $525 in profit
Pls brainliest!!
solve system by substitutition or elimination.
9x-8x=9
-18x+16y=-18
Answer:
1. 9x-8y=9
2. -18x+16y= -18 ⇒ -9x+8y= -9 ⇒ 9x-8y=9
as we see both equations are same, it means the lines overlap and there is infinite number of solutions
5 customers buy 10,15,20,25,30 toffees respectively from 1 shop. But the the person who bought 20 toffees forgot to pay .if the shopkeeper makes 20% profit what will be his profit or loss from these five customers of the person who forgot to pay at pay his amount had paid his amount?
50% profit ,60% profit, 40% loss ,20% loss.
Answer:
40% profit
Step by step Explanation:
Profit percentage
=( profit/cost price) * 100
0.2 = profit/cost
10+15+20+25+30= 100
Let's assume the cost price of the items is $1 each
Cost price total= $100
Profit made when buyer of 20 toffe didn't say was
0.2=profit/cost
0.2*100 =$20
If the$ 20 paid.
Total profit = $40
So percentage profit now
40/100 * 100 = 40%
The shopkeeper makes a loss of 40% and this can be determined by using the given data.
Given :
5 customers buy 10,15,20,25,30 toffees respectively from 1 shop. But the person who bought 20 toffees forgot to pay.The shopkeeper makes a 20% profit.The following steps can be used in order to determine the profit or loss the shopkeeper makes:
Step 1 - The total number of toffees can be calculated as:
[tex]\rm Total \; Toffees = 10 +15 + 20+ 25+ 30\\\rm Total \; Toffees = 100\\[/tex]
Step 2 - Now, let the cost of 1 toffee be $1. So, the cost of 80 toffees is $80.
Step 3 - So, the value of 20% profit by selling 80 toffees be 'x'. So, the value of 'x' is:
[tex]x = \dfrac{20}{100}\times 80[/tex]
[tex]x = \$16[/tex]
Step 4 - Now, let the profit or loss be 'y'. So, the value of 'y' is:
[tex]y = \dfrac{20}{80}\times 16[/tex]
[tex]y = \$4[/tex]
Step 5 - So, the loss percentage is 40%.
Therefore, the correct option is C).
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Please answer this question and thank you !! Will give you brainliest !!
Answer:
D
Step-by-step explanation:
Two lines are parallel if they have the same slope
y= mx+bthose with same m,
It only appears in the last option where m= -5 for both lines, so option d
What is the equation of the horizontal line through (-5,-2)
Answer:
y = -2
Step-by-step explanation:
A horizontal line has an equation of the form ...
y = constant
In order for the line to go through a point with a y-coordinate of -2, the constant must be -2.
y = -2 . . . . horizontal line through (-5, -2)
A fish tank has a base, B, with an area, in square inches, modeled by B(x) = 2x^2 + 6x + 4. The height, H, in inches, is modeled by H(x) = x + 3. Find the equation that models the fish tank’s volume, V, in cubic inches.
A. V(x) = 2x^2 + 7x + 7
B. V(x) = 2x^2 + 5x + 1
C. V(x) = 2x^3 + 12x^2 + 22x + 12
D. V(x) = 2x^3 + 8x^2 + 10x + 4
Answer:
C. V(x) = 2x^3 + 12x^2 + 22x + 12
Step-by-step explanation:
The volume of a fish tank is the multiplication of the area of the base by the height.
In this question:
Area of the base: [tex]B(x) = 2x^{2} + 6x + 4[/tex]
Height: [tex]H(x) = x + 3[/tex]
Volume:
[tex]V(x) = B(X)*H(x) = (2x^{2} + 6x + 4)(x + 3) = 2x^{3} + 6x^{2} + 4x + 6x^{2} + 18x + 12 = 2x^{3} + 12x^{2} + 22x + 12[/tex]
So the correct answer is:
C. V(x) = 2x^3 + 12x^2 + 22x + 12
What’s the correct answer for this?
Answer:
167
Step-by-step explanation:
Which of the following measurements is the most precise?
A.A 15.5 foot tall tree
B.An 84-year-old man
C.A gas price of $2.359 per gallon
Answer:
C.)
Step-by-step explanation:
C.) Because it states the exact decimals rather than just stating about $2.36. Also, the other options were not specific. Hope this helps!
What’s the correct answer for this?
Answer:
6
Explanation:
According to secant-secant theorem,
(PB)(PA)=(PD)(PC)
(7)(12)=(PD)(14)
NOW
84/14 = PD
PD = 6
What’s the correct answer for this? Select two answer choices
Answer:
D and F
Step-by-step explanation:
In the attached file
What is x X/5=15. ⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️⌚️
Answer:
x=3
Step-by-step explanation:
15/5=3 now I gotta get 20 chatacters
Answer:
[tex]x=75[/tex]
Step-by-step explanation:
[tex]\frac{x}{5} =15[/tex]
[tex]x=15 \times 5[/tex]
[tex]x=75[/tex]
Would you rather 36 spherical bottles with radi = 4.57 or three 12-packs of cans if each box is 15inx5inx4.4in
Answer:
36 bottles
Step-by-step explanation:
Each spherical bottle will have a volume of ...
V = (4/3)πr³ = (4/3)π(4.57³) = 399.8 . . . . cubic inches
Each box (12-pack?) will have a volume of ...
V = LWH = (15 in)(5 in)(4.4 in) = 330 in³
This is a smaller volume than even one spherical bottle, so 36 bottles will have the larger volume.
What is the quotient of 3/4 divided by 1/5
Answer:
15/4
Step-by-step explanation:
3/4:1/5= 3/4*5= 15/4
Suppose that you had consumer group wanted to test to see if weight of participants in a weight loss program changed (up or down). They computed a 95% confidence interval of the result (-4.977, 2.177). What do we know about the p-value for the test?
Answer:
What we know about the p-value for the test is that it will be less than 0.05
Step-by-step explanation:
The complete question is as follows;
Suppose that you had consumer group wanted to test to see if weight of participants in a weight loss program changed (up or down). They computed a 95% confidence interval of the result (-4.977, -2.177). Suppose that we had a significance test with the following hypothesis:
H0: population mean weight loss = 0
Ha: population mean weight loss does not equal 0
What do we know about the p-value for the test?
solution;
Given the information in the question, we are concerned with saying what we know about the p-value for the test
To answer this question, we shall be looking at it from the angle of the confidence interval
The confidence interval given is 95%.
Now what does this indicate?
It indicates that 95% confidence interval contains only values which are less than 0.
What does this mean for the p-value?
This means that the p-value will be less than 0.05
11. In your own words, describe how to view the
hean of a set of numerical data in two different
ways: in terms of leveling out and as a balance
point. In each case, give an example to illustrate.
Write the following statement as a unit rate: 18 laps in 6 minutes
Answer:
3 laps per minute
Step-by-step explanation:
Take the number of laps and divide by the minutes
18/6 = 3 laps per minute
Answer:
3 laps per min
Step-by-step explanation: divide 18 and 6
Solve for x.
6(x - 1) = 9(x + 2)
X = -8
X = -3
X = 3
x = 8
Answer:x=-8
Step-by-step explanation:
