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3 years ago

A small plane travel at a rate of 125 kilometers per hour. find the distance traveled in 3 hours

Mathematics

1 answer:

sveta [45]3 years ago

7 0

The answer is 375 kilometers in 3 hours

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Marie is saving $75 each week so she can buy a new laptop which costs $1200. She has already saved $125. Find the minimum number

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Answer:

Step-by-step explanation:

$125+75w\ge 1200\\ \\ 75w\ge 1075\\ \\ w\ge 14.33\\ \\ \text{So she must save for at least 15 weeks.}$

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2 years ago

A force of 4 pound acts in the direction of 48degree to the horizontal. The force moves an object along a straight line from the

Dafna11 [192]

Answer:

<u>Work Done = 27.66 Joules</u>

Step-by-step explanation:

The work done is:

$W=F*d*Cos \theta$

Where

F is the fore

d is the distance moved

$\theta$ is the angle

The force is "4"

The distance is the distance from (1,7) to (8,10)

The distance is the square root of change in y coordinates, squared and sum of change in x coordinates, squared. Hence, distance is:

$\sqrt{(10-7)^2+(8-1)^2}\\=\sqrt{3^2+7^2}\\\sqrt{58}$

The angle is gotten by the formula:

$Cos\phi = \frac{Force in x direction}{Distance}\\Cos\phi = \frac{8-1}{\sqrt{58}}\\Cos\phi=\frac{7}{\sqrt{58}}\\\phi = Cos^{-1}\frac{7}{\sqrt{58}}\\\phi = 23.21$

So, now:

$\theta = 48 - 23.21 = 24.79$

Work Done = $F*d * Cos\theta = 4 * \sqrt{58} * Cos(24.79)$

<u>Work Done = 27.66 Joules</u>

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2 years ago

What is 9^2÷(2+1)×30-3^3

weeeeeb [17]

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3 years ago

A moving company had one sixth of a ton weight to move across town. If they wanted to split it equally amongst 4 trips, how much

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1/24 of a ton.
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3 years ago

Which graph shows a proportional relationship?

kherson [118]

Answer:

The second option

Step-by-step explanation:

The rate of change needs to stay constant.

The rate of change can be explained by looking at the "rise" (y) over the "run"(x)

The rate of change for the second option is 2. We know this because...

Rise(2)

----------

Run(1)

Try looking at one of the points, now go up 2 and over 1, you should now be at the second point, do it again but twice, you should now be at the third point. A proportional relationship must also go through the origin (0,0)

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2 years ago

A small plane travel at a rate of 125 kilometers per hour. find the distance traveled in 3 hours​

A small plane travel at a rate of 125 kilometers per hour. find the distance traveled in 3 hours