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3 years ago

Due in 10 mins, pls help !

Mathematics

1 answer:

xeze [42]3 years ago

4 0

Answer:

3rd one

Step-by-step explanation:

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A boulder falls off the top of a cliff during a storm. The cliff is 90 feet high.

andreev551 [17]

Answer:

It will take the boulder approximately 4.28 seconds to hit the road

Step-by-step explanation:

The given height of the cliff from which the boulder falls, h = 90 feet

The equation that can be used to find the time it takes the boulder to fall is h = u·t + (1/2)·g·t²

Where;

h = The height of the cliff = 90 ft.

u = The initial velocity of the boulder = 0 m/s (The boulder is assumed to be at rest when it falls)

g - The acceleration due to gravity ≈ 9.81 m/s²

t = How long it will take for the boulder to hit the road below

Plugging in the values gives;

90 = 0 × t + (1/2)×9.81×t² = 4.905·t²

∴ t = √(90/4.905) ≈ 4.28

The time it takes the boulder to hit the road, t ≈ 4.28 seconds.

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2 years ago

Write the standard form of the line that has a slope of - and y-intercept of -2. Include your work in your final answer. Type yo

ehidna [41]

You need to go from slope-intercept ( $y=mx+b$ ) to standard form ( $ax + by = c$ ).

slope-intercept form of your provided values:
$y=-x-2$
now, solve for x and y
$x+y=-2$

Your answer is $x+y=-2$ .

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3 years ago

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Which of these is an exponential parent function?

attashe74 [19]

The exponential parent function is D

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2 years ago

A low calorie dinner has 480 calories in an 9 ounce serving. What is the unit rate in simplest form? 9/48 160/3 48/9 3/160

LenaWriter [7]

Answer:Hi, the correct answer is $\frac{160}{3}$ .

Step-by-step explanation:

As you are being asked for rate and the importat value is the number of calories consumed. We need to simplify the fraction $\frac{480 calories}{9 ounce}$ . Then we simplify.

Note that 480 is divisible by 3 and 9 as well. 480/3 = 160 and 9/3 = 3. Therefore, 480/9 = 160/3.

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2 years ago

three bags of packing peanuts are used to fill 2 boxes how many bags of packing peanuts does each box use between which two whol

fredd [130]

No it does not, it does not lie.

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3 years ago

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Due in 10 mins, pls help !​

Due in 10 mins, pls help !