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2 years ago

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Anyone pls helppp meeeee

1 answer:

Citrus2011 [14]2 years ago

3 0

Answer:

c answer becoz may ifhridyrhfujghrhrjjtufuueb

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Explain how you find it

aliina [53]

Answer:

x = 39

Step-by-step explanation:

there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two

so, (36 + 42)/2 = x

36 + 42 = 78

78/2 = 39

8 0

3 years ago

The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 -57, where t is the time

cupoosta [38]

A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 – 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?

Answer:

$1\leq t\geq \sqrt{2}$

Step-by-step explanation:

Given:

A stuntman jumping off a 20-m-high building is modeled by the equation

$h =20-5t^{2}$ -----------(1)

A high-speed camera is ready to making film between 15 m and 10 m above the ground

when the stuntman is 15m above the ground.

height $h = 15m$

Put height value in equation 1

$15 =20-5t^{2}$

$5t^{2} =20-15$

$5t^{2} =5$

$t^{2} =1$

$t =\pm1$

We know that the time is always positive, therefore $t=1$

when the stuntman is 10m above the ground.

height $h = 10m$

Put height value in equation 1

$10 =20-5t^{2}$

$5t^{2} =20-10$

$5t^{2} =10$

$t^{2} =\frac{10}{5}$

$t^{2} =2$

$t=\pm\sqrt{2}$

$t=\sqrt{2}$

Therefore ,time interval of camera film him is $1\leq t\geq \sqrt{2}$

7 0

3 years ago

The simple interest on a sum of money is 25% of the principal and the number of year is equal to the rate percent per annum. Fin

olga_2 [115]

Answer:

si =25%*p

rate =term=t

from si= ptr/100

term = rate = 5

Step-by-step explanation:

3 0

2 years ago

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Find the solution<br> X-Y=-2 and -x+y=2

kati45 [8]

Answer:

Step-by-step explanation:

both represent the same line .

Hence it has infinite solutions as there are infinite points on aline.

7 0

3 years ago

What is the answer to -.3y=7.53

fiasKO [112]

Y = - 25.1

I hope this helps.

I hope you pass! :D

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3 years ago

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