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3 years ago

I need 14 and 15 thanks

Mathematics

1 answer:

Bad White [126]3 years ago

8 0

14) The answer is a) y = 2x. 2 is the slope and the line does not cross over the Y axis in this picture so there is not a Y-intercept you can see.
15) You pretty much just estimate. On the graph when you find 50 minutes and go up its around 140. 50 x 2 is 100 minutes. so just multiply 140 by 2 and its 280 so just round to the closest one.

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An airplane flew with the wind for 2.5 hours and returned the same distance against the wind in 3.5 hours. If the cruising speed

KengaRu [80]

Answer:

60 miles per hour.

Step-by-step explanation:

Let r represent speed of wind blowing in miles per hour.

We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be $360+r$ .

The speed of the plane is the opposite direction of wind would be $360-r$ .

$\text{Distance}=\text{Speed}\times \text{Time}$

Distance covered in the direction of wind would be $2.5(360+r)$ .

Distance covered in the opposite direction of wind would be $3.5(360-r)$ .

Since both distances are same, so we will get:

$2.5(360+r)=3.5(360-r)$

$900+2.5r=1260-3.5r$

$900-900+2.5r+3.5r=1260-900-3.5r+3.5r$

$6r=360$

$\frac{6r}{6}=\frac{360}{6}$

$r=60$

Therefore, the wind is blowing at a rate of 60 miles per hour.

6 0

3 years ago

Asta made a fraction number line to help her multiply 3 times 4/5. Write 3 times 4/5 as the product of a whole number and unit f

Oduvanchick [21]

The answer is at the bottom.

3 times 4/5 = 3/1 times 4/5
so you get 12/5
the question says as the product of a whole number and unit fraction
so it is 2 2/5.

the answer is 2 2/5

4 0

3 years ago

3) What percent of 68 is 146?

DENIUS [597]

Answer:

46.58%

Step-by-step explanation:sorry if wrong

5 0

3 years ago

Read 2 more answers

What is the percent change in the price of a gallon of gas, to the nearest whole percent?

Hatshy [7]