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2 years ago

Josh can run 7 miles in 45 minutes. How long would it take him to run 21 miles?

Mathematics

1 answer:

Ann [662]2 years ago

7 0

Answer: 135 minutes

Step-by-step explanation:

45/7= 6.42857142857

6.42857142857 x 21 = 135

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Sophia pays $19.99 membership fee for an online music store. If sophia purchases n songs for $0.99 each write the expression for

Alona [7]

Answer:

The expression for the total cost is x = 19.99 + 0.99n .

Step-by-step explanation:

Let us assume that the total cost be x.

As given

Sophia pays $19.99 membership fee for an online music store.

If sophia purchases n songs for $0.99 each .

Than the expression becomes

Total cost = Membership fee + Cost of n songs

x = 19.99 + 0.99n

Here n represented the number of songs.

4 0

3 years ago

Ik it’s pretty easy but u knowh am not really sure if am right or not

gladu [14]

2,6,18

r = 6/2 = 3

18 *3 = 54

54*3 = 162

162*3=486

Answer: 54,162,486

8 0

3 years ago

Read 2 more answers

Use a number line to show the sum of 6 + (–7).

mylen [45]

So there is a rule
(+)(+)=+
(-)(+)= -
(+)(-)= -
So now if you subtract 6 with 7 you will end up having -1 as you’re answer. Hope this helps

4 0

3 years ago

Can someone help me please?

Shtirlitz [24]

The image isn’t loading for me , try reuploading

8 0

3 years ago

A skier is on the top of a 350 meter tall mountain looking down at a tree. The direct path from the tree to the skier is 505 met

denpristay [2]

Answer:

$43.87^{\circ}$

Step-by-step explanation:

We are given that

Height of mountain=350 m

Distance from the tree to the skier=505 m

We have to find the angle of depression from where the skier is standing to the base of the tree.

In triangle ABC

$\frac{AB}{AC}=sin\theta$

By using the formula

$\frac{Perpendicular\;side}{Hypotenuse}=sin\theta$

$\frac{350}{505}=sin\theta$

$sin^{-1}(\frac{350}{505})=\theta$

$\theta=43.87^{\circ}$

Hence, the angle of depression from where the skier is standing to the base of the tree= $43.87^{\circ}$

6 0

3 years ago

Josh can run 7 miles in 45 minutes. How long would it take him to run 21 miles?​

Josh can run 7 miles in 45 minutes. How long would it take him to run 21 miles?