3 years ago

A snowboarder descends a 1200-foot hill in 3 minutes. What is the mean change in elevation per minute? (400 is not correct!)

Mathematics

1 answer:

marissa [1.9K]3 years ago

3 0

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What is the value of x?

Nikolay [14]

Answer:

5 units (you are right!)

Step-by-step explanation:

The triangles ABD and BCD are similar.

Therefore,

$\frac{x}{10}=\frac{10}{4x} \\4x^{2}=100\\x^{2}=25\\x=5$

I hope this helped!

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2 years ago

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timofeeve [1]

Answer:

v=-6 or 4

Step-by-step explanation:

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2 years ago

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Combine like terms to simplify each expression

Anna35 [415]

1) 1x or just x
2) 6y-5
3) 7n+5
4) -9x-6
5) 12x+14

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3 years ago

HELP ILL GIVE BRAINLIEST!!!!

Setler [38]

Its A i had the same one. Hope it helps.

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3 years ago

A ball has a volume of 4 cubic inches (in3). Use the fact that 1 inch is equal to 2.54 cm to convert this volume to cubic centim

Marina86 [1]

Answer:

V = 65.548 cm³

Step-by-step explanation:

We have,

Volume of a ball is 4 cubic inches or $4\ \text{inch}^3$ .

We know that, 1 inch = 2.54 cm

It is required to convert this volume to cubic centimetre or $\text{cm}^3$ .

$4\ \text{inch}^3=4\ \text{inch}^3\times (\dfrac{2.54\ \text{cm}}{1\ \text{inch}})^3\\\\V=65.548\ \text{cm}^3$

So, the volume of the ball is 65.548 cm³.

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3 years ago