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3 years ago

The high school has been raising money

Mathematics

1 answer:

patriot [66]3 years ago

5 0

Step-by-step explanation:

Together they have $2735. 3000-2735=265 so the inequality is m>=265

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3 years ago

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What is the domain of the function in this table?

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3 years ago

Decide whether or not it is possible for a triangle to have three angle measurements or three side lengths given. If it is possi

shutvik [7]

Answer:

First one is not possible

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Last one is not possible

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Step-by-step explanation:

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3 years ago

What fraction of energy is got after eating 1 packet of maggi

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3 years ago

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