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3 years ago

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A ball is thrown in the air. The relationship between the time the ball is in the air, t (in seconds), and the height of the bal

l in feet above the ground (h) is represented by h=-16t2+20t+6. How many seconds will it take for the ball to hit the ground?

1 answer:

Veseljchak [2.6K]3 years ago

6 0

Answer:

88

Step-by-step explanation:

87+1=88

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Your sister is considering two different shapes for her garden. One is a square with side lengths of 3.5 meter, and the other is

Bess [88]

Hello! I can help you with this!

A. Okay. So, to find the area of the square all you have to do is the number square, or multiply the number by itself, in this case. 3.5. 3.5^2 is 12.25. The area of the square is 12.25 square meters large.

B. To find the area of the circle, you do pi*r^2. Radius is half the the diameter. Half of 4 is 2. 2^2 is 4. To multiply by pi, we can just do it as 3.14. 4 * 3.14 is 12.56. The circle is 12.56 square meters large.

C. The circle garden would give her the most space to plant, because 12.56 is larger than 12.25 by 0.31. The circle garden 0.31 square meters larger than the square garden.

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3 years ago

A high speed elevator can rise 480 feet in 30 seconds. which expression represents the rate, in feet per minute, of the elevator

AleksAgata [21]

R = 960x ft/min

Explaination : 960 is the rate at which the elevator will rise in a minute, while the 'x' represents the amount of minutes passed. Finally the label in the end clarify the units of measure.

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4 years ago

Which graph shows the solution set of x-9/7x+2<=0

S_A_V [24]

For this case we have the following inequality:
$\frac{x-9}{7x+2} \leq 0$
Solving for the numerator we have:
$x-9 \leq 0$
$x \leq 9$
Solving for the denominator we have:
$7x+2\ \textgreater \ 0$
$7x\ \textgreater \ -2$
$x \ \textgreater \ \frac{-2}{7}$
Therefore, the solution is given by:
$\frac{-2}{7} \ \textless \ x \leq 9$
The graph that shows this solution is the graphic number 3.
Answer:
option 3

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3 years ago

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A line parallel to $3x-7y = 65$ passes through the point $(7,4)$ and $(0,K)$. What is the value of K?

Zepler [3.9K]

Answer:

1

Step-by-step explanation:

Hi, its you again lol.

I am in elementary btw.

I don't want to put the equation down.

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3 years ago

Find the exact value of x

Gennadij [26K]

Answer:

what's the question

Step-by-step explanation:

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3 years ago