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Murrr4er [49]
3 years ago
10

Heather hits a tennis ball upward with an initial speed of 32 feet per second. After how many seconds does the ball hit the grou

nd
Use the formula h = rt − 16t2 where h represents height in feet and r represents the initial speed.
Numerical Answers Expected!
Answer for Blank 1:
Mathematics
2 answers:
MatroZZZ [7]3 years ago
6 0

Answer:

2 seconds

Step-by-step explanation:

Given : Heather hits a tennis ball upward with an initial speed of 32 feet per second.

To Find: After how many seconds does the ball hit the ground

Solution:

Formula : h = rt -16t^2

Where h is the height

r is the initial speed

So, initial speed = r = 32 feet per second

Now we are supposed to find After how many seconds does the ball hit the ground i.e. h =0

Substitute h=0 in the formula

0 = 32t -16t^2

16t^2 = 32t

16t = 32

t = \frac{32}{16}

t = 2

Thus after 2 seconds the ball will hit the ground.

Mrrafil [7]3 years ago
3 0
set h=0 and solve for <span>t

</span>So: 0 = 32t - 16^2

<span>32t−16<span>t2</span>=0</span><span>16t(2−t)=0</span><span><span>t=2


</span></span>
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A quadrilateral WXYZ contains wxy where measure of wxy=92 degrees. Once rotated 270° about the origin and translated 2 units up,
Marianna [84]

Answer:

C. 92 degrees

Step-by-step explanation:

Given that the \angle{wxy}=92° which is one of the angles of the quadrilateral WXYZ

The quadrilateral is first rotated by 270° about the origin and then translated 2 units up, the new position of the quadrilateral is W'X'Y'Z'.

The shape of the quadrilateral is remained unchanged due to rotation and translation, so all the angles of the final quadrilateral W'X'Y'Z' is the same as the angles of the given quadrilateral WXYZ.

So,\angle{w'x'y'}= \angle{wxy}

By using the given value,

\angle{w'x'y'}= 92°

Hence, option (C) is correct.

8 0
3 years ago
PLEASE HELP ME
stiv31 [10]
Since it's a right triangle you can use the Pythagorean theorem or Trig (Soh Cah Toa).

I'll just use the Pythagorean theorem : a² + b² = c²
a = 9
b = x
c = 18

9² + x² = 18²
81 + x² = 324
x² = 324 - 81
x² = 243
x = √(243)

factor 243 to find a perfect square

x = √(3*81)
x = 9√(3)<u />
5 0
3 years ago
A train has an average speed of 18 miles per hour. How long will it take to travel 270 miles?
NARA [144]
I believe the answer is 15 because if you divide 270/18 you get 15 <span />
8 0
3 years ago
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Pepsi [2]

Answer:

edit: adjacent angles

Step-by-step explanation:

hope this helps

5 0
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posledela

Answer:

11.43

Step-by-step explanation:

[8 + (24 x 3)] divided by 7

[8 + (72)] divided by 7

80/7

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11.43 (I rounded it)

6 0
3 years ago
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