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3 years ago

10

Need help with solving #10 please.

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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Dhfnfnsngsdbnchfbmfnbmbmhfnc

finlep [7]

4/32 = x/100
answer: x = 12.5

3 0

3 years ago

Tara wants to fix the location of a mountain by taking measurements from two positions 3 miles apart. From the first position, t

Black_prince [1.1K]

Answer:

Shortest distance from the mountain is 3.17 miles.

Step-by-step explanation:

From the figure attached,

Let a mountain is located at point A.

Angle between the mountain and point B (∠B) = 53°

Angle between the mountain and point C (∠C) = 78°

Distance between these points = 3 miles

Since, m∠A + m∠B + m∠C = 180°

m∠A + 53° + 78° = 180°

m∠A = 180°- 131° = 49°

By applying sine rule in triangle ABC,

$\frac{\text{sin}(49)}{BC}=\frac{\text{sin}(53)}{AC}= \frac{\text{sin}(78)}{AB}$

$\frac{\text{sin}(49)}{3}=\frac{\text{sin}(53)}{AC}= \frac{\text{sin}(78)}{AB}$

$\frac{\text{sin}(49)}{3}=\frac{\text{sin}(53)}{AC}$

AC = $\frac{3\text{sin}(53)}{\text{sin}(49)}$

AC = 3.17 miles

$\frac{\text{sin}(49)}{3}=\frac{\text{sin}(78)}{AB}$

AB = $\frac{3\text{sin}(78)}{\text{sin}(49)}$

AB = 3.89 miles

Therefore, shortest distance from the mountain is 3.17 miles.

7 0

3 years ago

Express the series using sigma notation.<br><br> 4 + 16 + 64 + 256 + 1,024

Hatshy [7]

Answer:

EASSYYY

Step-by-step explanation:

1364

3 0

3 years ago

Read 2 more answers

An airline runs a commuter flight between Portland, Oregon, and Seattle, Washington, which are 145 miles apart. An increase of 2

pychu [463]

The speed of the airplane is the ratio of the distance to the time

The initial average speed of the airplane is approximately 110.8 mph

Reason:

Given parameters are;

The distance between Portland Oregon and Seattle Washington = 145 miles

The decrease in travel time when the speed is increase by 20 mph = minutes

The initial speed of the airplane, v = Required;

Solution;

$t = \dfrac{145}{v}$

$t - \dfrac{12}{60} = \dfrac{145}{v + 20}$

Therefore;

$\dfrac{145}{v} - \dfrac{12}{60} = \dfrac{145}{v + 20}$

Which gives;

$\dfrac{145}{v + 20} - \dfrac{145}{v} + \dfrac{12}{60} = 0$

Therefore

0.2·v² + 4·v - 2,900 = 0

v ≈ ±110.8 mph

The initial average speed of the airplane, v≈ ± 110.8 mph

Learn more here:

brainly.com/question/11365874

4 0

2 years ago

9 + 10? <br><br>I'm 5 years old idk what I'm using buh fu

just olya [345]

The answer is 19. Hopefully this helps

5 0

3 years ago

Read 2 more answers