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3 years ago

Desmond is 3 inches taller than Niki.

Mathematics

1 answer:

Fiesta28 [93]3 years ago

8 0

Desmonds height let’s say x = y + 3

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8^(2x-1)=4^(3x+4) PLEASE HELP ME

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Step-by-step explanation:

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3 years ago

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Which statement best describes the relationship between x and y in the equation y = 6 + x?

mash [69]

Answer:

A. The Value of y is six less than the value of x

Step-by-step explanation:

This is because the value of x is equal to y when six is added.

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3 years ago

Amanda's computer weighs 56 ounces. how many pounds does it weigh?

vampirchik [111]

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A projectile is launched into the air. The function h(t) = –16t2 + 32t + 128 gives the height, h, in feet, of the projectile t s

Zinaida [17]

Answer:

t = 4 seconds

Step-by-step explanation:

The height of the projectile after it is launched is given by the function :

$h(t)=-16t^2+32t+128$

t is time in seconds

We need to find after how many seconds will the projectile land back on the ground. When it land, h(t)=0

So,

$-16t^2+32t+128=0$

The above is a quadratic equation. It can be solved by the formula as follows :

$t=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here, a = -16, b = 32 and c = 128

$t=\dfrac{-32\pm \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=\dfrac{-32+ \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}, \dfrac{-32\- \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=-2\ s\ \text{and}\ 4\ s$

Neglecting negative value, the projectile will land after 4 seconds.

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3 years ago

Find the value of x. 7 Х 3 Z x= [?] V Give your answer in simplest form.

mixas84 [53]

Answer:

Step-by-step explanation:

$y^2=7*3\\y^2=21\\y^2=\sqrt{21}$

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3 years ago