2 years ago

Which expressions are equivalent to

Mathematics

1 answer:

natita [175]2 years ago

5 0

Answer:

Step-by-step explanation:

-30(3+2w= the other way around

c the better way around!

Thank you make me brainliest please!

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The position function for a free-falling object is s(t) = -16t^2 + vt +5. A ball is thrown upward from the top of a 400-foot bui

mixer [17]

Answer:

6.21 seconds

Step-by-step explanation:

The position function of a free-falling object is,

$s(t) = -16t^2+v_0t+s_0$

Where,

$s_0$ = initial height of the object,

$v_0$ = initial velocity of the object,

Here,

$s_0=400\text{ feet}$

$v_0=35\text{ feet per sec}$

Hence, the height of the ball after t seconds,

$s(t)=-16t^2+35t+400$

When s(t) = 0,

$\implies -16t^2+35t+400=0$

$t=\frac{-35\pm \sqrt{35^2-4\times -16\times 400}}{2\times -16}$

$t=\frac{-35\pm \sqrt{1225+25600}}{-32}$

$\implies t\approx -4.02\text{ or }t\approx 6.21$

∵ Time cannot be negative,

Hence, after 6.21 seconds the ball will reach the ground.

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3 years ago

Lisa has a rectangular trampoline that is 6 feet long and 12 feet wide. What is the area of her trampoline in square feet?

Cloud [144]

6*12 = 72ft²

The area of the trampoline is 72ft²

Hope this helps! :)

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3 years ago

What is the percent decrease from 16 to 12?

galina1969 [7]

Answer:

25%

Step-by-step explanation:

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3 years ago

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Calculate the slope, or rate of change, of this line. 1) 3 2) 4 3) 2 4) 0.5

ASHA 777 [7]

Answer:

The slope for the line is 2

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2 years ago

A bacteria culture doubles every hour. If there are 15000 bacteria now, how many bacteria were there 6 hours ago? Use an exponen

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23.4375 or 24.0 is the bacteria count after 6 hours.

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2 years ago