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Burka [1]
2 years ago
13

A cyclist travels 5 miles in 15 minutes. What is her average speed in mph?

Mathematics
1 answer:
Ber [7]2 years ago
6 0
S=d/t

15 minutes = 0.25 hour

S=5/0.25

S= 20 miles per hour
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Please urgently please❤️ Please help
irinina [24]

Answer:

6. E

7. D

8. 5,-8,34

Step-by-step explanation:

A. Parallel to the y-axis and passes through the point (3,5)

For it to be parallel to the y-axis, what this means is that it has an x-intercept and no y intercept.

So what this means is that x = 3 is our line so E is correct

B. Perpendicular to the y-axis means it is parallel to the x-axis

It means is has no x intercept and thus its x value at any point in time is zero

So the equation is y = -5

or simply y + 5 = 0 which means D is correct

C. It is parallel to the line 5x -8y + 12 = 0

Thus: 8y = 5x + 12

dividing both sides by 8

y = 5x/8 + 12/8

y = 5x/8 + 3/2

y = 5x/8 + 1.5

Comparing this with the general equation of a straight line ;

y = mx + c

where m is that slope, this means that 5/8 is the slope of the line

Mathematically if two lines are parallel, they have equal slopes.

So we can say the slope of the other line too is 5/8

Now to find the equation of the other line, we can use the point-slope method

y-y1 = m(x-x1)

where (x1,y1) in this case is (-2,3)

So we have;

y-3 = m(x-(-2))

y-3 = 5/8 (x + 2)

8(y-3) = 5(x + 2)

8y -24 = 5x + 10

5x + 10 + 24 -8y = 0

5x -8y + 34 = 0

So A, B, C = 5, -8, 34

4 0
3 years ago
Matttttttttttttttttthhhhhhhhhh , HELLPPP !
Harman [31]

here we have 3X to 5 seventh power in radical form

3x^{5/7}

we need write this in radical form we knwo that x^{1/2} =\sqrt{x}

so 3x^{5/7} =\sqrt[7]{3x^{5}}

this will be the radical form .

8 0
3 years ago
Read 2 more answers
Joeli has 10 quarters. She wants to buy postcards to mail to her friends. Each postcard costs 2 quarters. How many postcards can
Arada [10]
5 post cards because its 10 divided by 2
3 0
3 years ago
Read 2 more answers
F= 8/5 (c) + 40 when c=5
Molodets [167]

Answer:

F = 48

Step-by-step explanation:

F= 8/5 (c) + 40

Let c=5

F = 8/5 * 5 +40

  = 8 + 40

  = 48

6 0
3 years ago
Read 2 more answers
T-6=8-t<br><br>how do solve? pls include steps
umka2103 [35]
First, add t to each side:
2t - 6 = 8
Add 6 to each side:
2t = 14
Divide both sides by 2:
t = 7

Hope this helps!! :)
8 0
3 years ago
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