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Genrish500 [490]
2 years ago
9

Deon throws a ball into the air. The height h of the​ ball, in​ meters, at time t seconds is modeled by the function ​h(t)= -5t^

2+t+18. Will the ball reach a height of 21 ​meters?
Mathematics
1 answer:
Ket [755]2 years ago
7 0

Answer: no

Step-by-step explanation:

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If g(x) = x^2 - 4 find g (5) A. 6 B. 14 C. 21 D. 29​
Marrrta [24]
C.21

5^2-4=21


Explanation
3 0
3 years ago
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-3/2t=-9 please help. its for a test
11111nata11111 [884]

-\frac{3}{2}t=-9\\\\t=-9:(-\frac{3}{2})\\\\t=-9\cdot(-\frac{2}{3})\\\\t=\frac{18}{3}\rightarrow\boxed{t=6}

3 0
2 years ago
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G(x)=2x-2 <br> f(x)=x^2+3x <br> find (g of f)(2+x)
Bumek [7]

Answer:

Step-by-step explanation:

G(f(2+x))=g(2+x)^2+3(2+x)=2(2+x)^2+3(2+x)-2=2(4+4x+x^2)+6+3x=8+8x+2x^2+6+3x=2x^2+11x+14

6 0
3 years ago
A collection of coins contains a total of sixteen dimes and quarters. It is worth $2.20 in all. How many dimes are in the collec
grin007 [14]

9514 1404 393

Answer:

  12 dimes

Step-by-step explanation:

Let q represent the number of quarters. Then the number of dimes is 16-q and the total value is ...

  0.25q +0.10(16 -q) = 2.20

  0.15q +1.60 = 2.20 . . . . . . . simplify

  0.15q = 0.60 . . . . . . . . subtract 1.60

  q = 4 . . . . . . . . . . . divide by 0.15

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There are 12 dimes in the collection.

5 0
3 years ago
How would you do this, I am very confused
AfilCa [17]
Triangle has a total of 180 degrees

add up all angles 
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9x=171
x=19

Plug x values into the A , B and C expressions and you get your answers
7 0
3 years ago
Read 2 more answers
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