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3 years ago

-a/6+5=1 Solve the eqation

Mathematics

1 answer:

Shkiper50 [21]3 years ago

5 0

Answer:

a=24

Step-by-step explanation:

$-\frac{a}{6}$ = -4

-a= -4*6

-a= -24

a= 24

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Simplify 8x - 3 (4x -2)

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Answer:

-4x+5

Step-by-step explanation:

use FOIL

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3 years ago

(-12)^9 negative or positive

g100num [7]

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3 years ago

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Snowcat [4.5K]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

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Andrej [43]

Answer:

the answer is each piece of trim is 43 cm long

185-13 = 172

172 divided by 4 pieces came out to 43 cm

(I don't know the equation part)

Step-by-step explanation:

5 0

3 years ago

If a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can

sasho [114]

Answer:

c. 6.5 seconds.

Step-by-step explanation:

We have been given that a a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can be determined by the formula $h = -3t^2+147$ , where h is the height of the plane at t seconds.

To find the time, when plane will be at a height of exactly 20.25 feet, we will substitute $h=20.25$ in our given formula and solve for t as:

$20.25= -3t^2+147$

$-3t^2+147=20.25$

$-3t^2+147-147=20.25-147$

$-3t^2=-126.75$

$\frac{-3t^2}{-3}=\frac{-126.75}{-3}$

$t^2=42.25$

Take square root of both sides:

$t=\pm \sqrt{42.25}$

$t=\pm 6.5$

Since time cannot be negative, therefore, the plane will be at a height of exactly 20.25 feet after 6.5 seconds and option 'c' is the correct choice.

6 0

3 years ago