3 years ago

Plz join the link belo

Mathematics

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

Hopefully you dont get mad i answered for the points

Step-by-step explanation:

DerKrebs [107]3 years ago

5 0

What link? But I also answered for point too...

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Find the equation of this line

adelina 88 [10]

Answer: y = - 3/1x + 4

Step-by-step explanation:

- 3/1x = -3x

y = - 3/1 + 4 = -3x + 4

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2 years ago

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What’s the answer to this?

nexus9112 [7]

the answer is 5.10729613...

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3 years ago

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I NEED HELP RN

adelina 88 [10]

Answer: $\leq $25$

$Greater then or equal to $15$

Step-by-step explanation:

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2 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

5/2x - 1.5 = 3.5 what is the value of x

azamat

Answer:

Step-by-step explanation:

<em>Add 1.5 to both sides:</em>

5/2x-1.5+1.5=3.5+1.5

5/2x=5

<em>Multiply both sides by 2/5</em>

(2/5)*(5/2x)=(2/5)*(5)

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3 years ago