Need help with solving #10 please.

Mathematics

2 answers:

Citrus2011 [14]3 years ago

7 0

You can use the ration 6:8 to show she reads 6 pages in 8 minutes.
Simplify this ratio first.
6:8 -> 3:4
Now just multiply the 4 by 5 to get 20 pages and the 3 by 5 as well to see how long it takes her to read those 20 pages.
3 • 5 = 15
It will take Frida 15 minutes to read 20 pages.

gtnhenbr [62]3 years ago

5 0

Set up a proportion:
6 pages ? pages
_______ = _______
8 minutes 20 minutes

Cross products 6 x 20 = 120 then 120/8 = 15.
So she read 15 pages in 20 minutes. The answer is A

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Irina18 [472]

Hope it helps 10 mins on the elliptical and 12 on the treadmil

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3 years ago

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pantera1 [17]

Step-by-step explanation:

5) 2.4×10^-5 / 4.5×10^-11

2.4×10^-5= 0.000024
4.5×10^-11= 0.000000000045

=0.000024/0.000000000045

=24/1 × 1,000,000/45

=24,000,000/45

=533,333.33°

=5.33333°×10^5

**NOT SURE ABOUT THIS QUESTION

6) (4,-2)

7) --------

8)

2x + 3 = 5x - 2

2x - 5x = - 2 - 3
-3x = -5
x = -5/-3
x = 1.66°

6x + 4 = 6x + 4

6x - 6x = 4 - 4
0x = 0

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

4x + 6 = 8x - 2
4x - 8x = -2 - 6
-4x = -8
x = -8/-4
x = 2

-3x + 2 = -3x + 5

-3x + 3x = 5 - 2
0x = 3

Letter be has no solution because it is broken down as "0x = 0"

6 0

3 years ago

After being dropped a certain ball always bounces back to 2/5 of the height of its previous bounceAfter the first bounce it reac

kap26 [50]

Answer:

8 inches.

Step-by-step explanation:

In the first bounce, the height that the ball reaches was 125 inches.

If the ball always bounces back to $\frac{2}{5}$ of the height, then after 2nd bounce it will reach $(125 \times \frac{2}{5}) = 50$ inches height.