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ValentinkaMS [17]
3 years ago
11

Identify the domain, range, and codomain in each graph. Then use the codomain and range to determine whether the

Mathematics
1 answer:
bearhunter [10]3 years ago
6 0

Answer:

13

Step-by-step explanation:

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Hello,
Nookie1986 [14]

Answer:

s = height above ground

s = 60 + 20 t - 4.9 t^2 (standard physics equation on earth)

at t = 0

s = 60 (clearly :)

now when does it hit the bleak earth?

That is when s = 0

4.9 t^2 - 20 t -60 = 0

solve quadratic and use the positive t (the negative t was back before you threw it if you had thrown it from the ground)

t = 6.09 or - 2.01

use t = 6.09

now to do the last part there are two obvious ways to get t at the peak

1. look for vertex of parabola

2. look for halfway between t = -2.01 and t = 6.09

I will do it the hard (11) waay by completing the square

4.9 t^2 - 20 t = -(s-60)

t^2 - 4.08 t = -.204 s + 12.2

t^2 - 4.08 t +2.04^2 = -.204 s +12.2 + 4.16

(t-2.04)^2 = -.204(s-80.2)

so

top at 80.2 meters at t = 2.04 s

===============

quick check on time

should be average of 6.09 and -2.01

=4.08 /2 = 2.04 check

7 0
1 year ago
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Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchas
strojnjashka [21]
He had 50 books before.
3 0
3 years ago
Polynomial in standard form.
nataly862011 [7]

Answer:

-2x² - 8x - 15

Step-by-step explanation:

-(2x² + 4x + 11) + (-4)

-2x² - 8x - 11 - 4

-2x² - 8x - 15

6 0
3 years ago
Which number best represents a helicopter ascending 112 ft? A. −112 B. +112 C. 112+ D. 112−
vampirchik [111]

Answer:

B +112

Step-by-step explanation:

7 0
2 years ago
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Two lines, A and B, are graphed (Look at the picture):
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Answer:

B. (2,8), because both equations intersect at this point

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3 years ago
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