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3 years ago

Please answer fully :) 30 pts

Mathematics

2 answers:

rosijanka [135]3 years ago

8 0

Answer: 14 seconds :p

Hope This Helps :)

adell [148]3 years ago

3 0

Answer:

D) 14 seconds

Step-by-step explanation:

y = -4.9t^2 + 120t

We want to find out when y = 500

500 = -4.9t^2 + 120t

Subtract 500 from each side

500-500 = -4.9t^2 + 120t-500

0 = -4.9t^2 + 120t-500

a=-4.9 b= 120 and c = -500

Using the quadratic formula

-b ±sqrt(b^2 -4ac)

-------------------------

-120±sqrt(120^2 -4(-4.9)(-500))

-------------------------

2*(-4.9)

Solving this for the two solutions

t≈5.32415

t≈19.1656

The object will be above 500 meters between these two times

19.1656 - 5.32415 = 13.84145

This is approximately 14 seconds

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2 years ago

During a football game, the Warriors lost 11 yards on one play. On the next play, the team gained 7 yards. How many total yards

ludmilkaskok [199]

Answer: -4 yards

Step-by-step explanation:

The Warriors lost 11 yards in one play.

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3 years ago

I will ask the question soon

Mrrafil [7]

Okay, I got no clue what’s going on but okay

4 0

4 years ago

If the length of a rectangle is 2x + 4 and the width is x - 2. write

Bess [88]

Answer:

P = 6x +4

Step-by-step explanation:

Use the given values in the formula for the perimeter of a rectangle:

P = 2(L +W)

You have ...

L = 2x +4

W = x -2

So, the perimeter is ...

P = 2((2x +4) +(x -2)) = 2(3x +2)

P = 6x +4

The perimeter of the rectangle is 6x+4.

3 0

2 years ago

Please help quick! Will mark brainliest

Ksju [112]

Area of a triangle is,

$a = \frac{1}{2} ( bh)$

Substitute the numbers,

$210 = \frac{1}{2} (35 \times x)$

$x = 12$

The above number is the base.

Using the pythagorean method let's calculate for "c" the hypotenuse.

$c = \sqrt{ {a}^{2} + {b}^{2} }$

Substitute

$c = \sqrt{ {35}^{2} + {12}^{2} }$

Solve,

$c = \sqrt{1225 + 144}$

Simplify,

$c = \sqrt{1369}$

Calculate one last time,

$c = {37}$

The hypotenuse is 37 inches.

3 0

3 years ago