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Katen [24]
3 years ago
13

A package is dropped from a helicopter at 1600 feet. The height of the package can be molded by h= -16^2+1600, where h is the he

ight of the package in feet and t is the time in seconds. How long will it take for the package to hit the ground?
A. Write an equation.

B. Solve the equation.

C. Answer the question.
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

hello :

Step-by-step explanation:

A. Write an equation:

-16t²+1600 = 0

B. Solve the equation.

-16t²= - 1600

t² = 100

t² = 10²

C. Answer the question.

t = 10

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Which equation shows an example of the associative property of addition?
Nat2105 [25]

The associative property states that we can regroup the terms of an expression and obtain the same result.

We have then:

a + (b + c) = (a + b) + c

The expression that complies with this property is given by:

(-4 + i) + 4i = -4 + (i + 4i)

Answer:

An equation that shows an example of the associative property of addition is:

a. (- 4 + i) + 4i = -4 + (i + 4i)

6 0
3 years ago
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500,000=_____x10<br><br> I'm confused on this​
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Answer:

5 x10^{5}

Step-by-step explanation:

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2 years ago
Which inequality is equivalent to −10(x−1)&lt;13?
Nataliya [291]

Answer:

-10<3

Step-by-step explanation:

first distribute the -10 to all the numbers within the parenthesis.

So, -10(x-1)<13 becomes -10x+10<13

Next, combine like terms. then we get -10<3

4 0
3 years ago
Please answer it needs to be right
Arturiano [62]

Answer:

A, because 12 divided by 24 is 0.5. And 50 divided by 100 is also .5

Step-by-step explanation:

3 0
3 years ago
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Suppose 250 randomly selected people are surveyed to determine if they own a tablet. Of the 250 surveyed, 98 reported owning a t
SashulF [63]

Answer:

The true proportion for the population would be between 0.386 and 0,398 (0.392±0.06) in 95% confidence level.

Step-by-step explanation:

Confidence interval for true population proportion can be computed as p±ME where

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  • ME is the margin of Error from the mean

and margin of error (ME) can be found using the formula

ME=\frac{z*\sqrt{p*(1-p)}}{\sqrt{N} } where

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  • p is the sample proportion ( \frac{98}{250}=0.392)
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Using the numbers

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Then the true proportion for the population would be p±ME = 0.392±0.06 in 95% confidence level.

6 0
3 years ago
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