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Vikentia [17]
4 years ago
5

While standing on a roof, you drop a hamner. The function y=16-64t^2 represents the height y (in feet) of the hammer t seconds a

fter it is dropped. After how many seconds does the hammer land on the ground?
Mathematics
1 answer:
WARRIOR [948]4 years ago
8 0
7 seconds!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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What solution do 2x2 - 13x + 21 = 0 and 2x2 + 9x - 56 = 0 have in common? Round your answer to the nearest tenth if necessary.
lys-0071 [83]
So if we want to know the common solution(s) to a system of 2 equations, So we can just set both equations equal to each other and solve for the x value(s). That’s where I start below;

2x^2-13x+21 = 2x^2+9x-56
2x^2 cancels out and moving everything to one side and anything with an x variable to the other side we have then;
-22x=-77
22x=77 by cancelling the negative signs
x=77/22 therefore x=7/2 or 3.5

Hope this helps you. Any questions please ask.
4 0
3 years ago
Can someone pls i will give brainliest :)
satela [25.4K]

Answer:

149 degrees

Step-by-step explanation:

<u>Higher value: </u>

114

<u>Lower value:</u>

-35

<u>Finding the difference:</u>

114 - (-35)

114 + 35

149

6 0
3 years ago
Read 2 more answers
The histogram shows the number of payphones that were active by year in a large city. How many payphones would you expect to be
tangare [24]

Answer:

Between 150 and 200

Step-by-step explanation:

i just did the assignment .

6 0
4 years ago
Solve for x help don't know how to do this
Charra [1.4K]
Both triangle are isosceles, which means their base angles are congruent.

54 + 2y = 180
2y = 126
y = 63 

The measure of the base angles of the triangle on the left is 63 degrees.

180 - 63 = 117

117 + 2x = 180
2x = 63
x = 31.5

Answer:
x = 31.5

Hope this helps.
5 0
4 years ago
4 mi = ___ ft <br> answer please!!
Tpy6a [65]

Answer:

21120

Step-by-step explanation:

1 mile = 5280 feet

5280 feet * 4 = 21120

4 0
3 years ago
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