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VARVARA [1.3K]
2 years ago
10

If you guys are in K12 and are in 7th grade help me!!!!!!!!!!!

Mathematics
1 answer:
Alex Ar [27]2 years ago
8 0
I wish I could help u with this one
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A volleyball player serves the ball from a height of 6.5 feet above the ground with an initial vertical velocity of 21 feet per
Vaselesa [24]

Answer:

Option D. H(t) = 6.5+21t-16t^2

Step-by-step explanation:

we know that

If air resistance is ignored, the height h (in feet) of the ball t seconds after it is served is given by

H(t) = - \frac{1}{2}g t^2 + V_0t + H_0

where

g is the acceleration due to gravity which on earth is approximately equal to 32 feet / sec^2

V_0 is the initial velocity (when t = 0 )

H_0 is the initial height (when t = 0)

In this problem we have

V_0=21\ ft/sec\\H_0=6.5\ ft

substitute the given values

H(t) = - \frac{1}{2}(32) t^2 + (21)t + 6.5

H(t) = -16t^2 + 21t + 6.5

Rewrite

H(t) = 6.5+21t-16t^2

3 0
3 years ago
Is Figure A congruent to Figure B? Explain.
velikii [3]
Yes, because figure B can be obtained from figure A by a series of translations
6 0
3 years ago
Arrange these numbers from least to greatest -5 positive 3 negative 2 1​
stiv31 [10]
-21,-5,3 is the answe
5 0
3 years ago
Read 2 more answers
You work at Dave's Donut Shop. Dave has asked you to determine how much each box of a dozen donuts should cost. There are 12 don
Archy [21]

Answer:

Donuts(b) = 12*b

Step-by-step explanation:

Notice that the question is:

What's an expression to model the number of donuts in b boxes?

We know that we are talking of boxes of a dozen donuts.

We know that in one dozen, we have 12 donuts.

Then if we have b boxes, and in each box we have 12 donuts, we will have a total of b times 12 donuts, the expression is:

Donuts(b) = 12*b

There is a lot of information here that we did not use (like the cost of cardboard and donuts), and that may be there just to distract us, the important thing to do here is:

See what is the thing we want to find (in this case, the number of donuts in b boxes)

Find the relevant information to solve this. (ignore the irrelevant information)

Solve the question.

3 0
3 years ago
The cost to rent a surfboard at the beach is $10.25 an hour plus an insurance fee of $25. Keith spent $55.75 when renting a surf
goblinko [34]

Answer: Keith spent 3 hours renting the surfboard.

Step-by-step explanation:

h=hour

10.25h+25=55.75

55.75-25= 30.75

30.75/10.25= 3

and if you want to check you can do

10.25(3)+25=

which would equal to 55.75

4 0
2 years ago
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