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3 years ago

5 1/4 fraction 2 3/4

Mathematics

1 answer:

Lemur [1.5K]3 years ago

5 0

What r we supposed to answer

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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.

4 0

4 years ago

Is it multiplication or division?...How much ch ice cream does each cone hold of four cones hold 1/2 pound

zubka84 [21]

2 ounces

using the conversion

1 pound = 16 ounces ⇒ $\frac{1}{2}$ = 8 ounces

Divide 8 by 4 to calculate amount for each cone

amount = 8 ÷ 4 = 2 ounces

4 0

3 years ago

How do you convert 10um

Lerok [7]

Answer:

$10 \times {10}^{ - 6 } = .000001$

3 0

3 years ago

How do I round to the nearest cent with this number? 0.19125

LekaFEV [45]

Answer: 0.19

Step-by-step explanation: Rounding to the nearest cent is the same as rounding to the nearest hundredth

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4 years ago

Read 2 more answers

Which of the following is not a way to represent the solution of the inequality 2(x − 1) greater than or equal to −12?

maxonik [38]

First you need to simplify the left side of the equation to get $2x-2 \geq -12$
Then you add by two on both sides to get $2x \geq -10$
Finally you divide by 2 on both sides to get $x \geq -5$

6 0

3 years ago