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Ulleksa [173]
3 years ago
5

A firework is launched from the ground. The quadractic function y=-4.9x^2+120x models the fireworks height in meters above the g

round after x seconds. About how long long is the firework in the air?
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
7 0

Answer:

12.24489795 + 0.06453627 radical 36000 - 49y

Step-by-step explanation:

Solve the equation for  x  by finding  a ,  b , and  c  of the quadratic then applying the quadratic formula.

Hope this helped!

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irina1246 [14]
I’ll do the problem but why is there that line next to eight?
6 0
3 years ago
If f(x)=-8x+8 and g(x)= x-9 what is (f g)(18)
Georgia [21]

Answer:

-8x^2+8(10x)-72

When x=18

-8(18×18-(10×18)+9)

-72(36-20+1)

17×(-72)

=-1224

5 0
3 years ago
*Please answer before 5:45! I'll award brainliest!*
FromTheMoon [43]

Answer:

A

Step-by-step explanation:

Vertical angles are angles that are formed by 2 lines and are directly accross from each other. They do not share a ray, however they are always the same number of degrees.

so then the answer would be A, ∠ERT and ∠MRC since they are directly across from each other.

4 0
3 years ago
Explain why it is necessary to rename 4 1/4 if you subtract 3/4 from it? Help please.
Hitman42 [59]
<span>So we want to know why is it necessary to rename 4 1/4 if we subtract 3/4 from it. First, lets turn 4 1/4 into a fraction: 4 1/4 = 17/4. Now lets subtract 3/4 from it: 17/4 - 3/4 = 14/4. So 14/4 becomes 3 2/4. And now we see why is it necessary to rename 4 1/4. </span>
6 0
4 years ago
Instructions: Interpret the function given in the context of the real-world situation described to answer the question.
sashaice [31]

Given:

\begin{gathered} W(d)=1650(.85)^d \\ where,\text{ d is the number of days} \end{gathered}

Requirement:

The percentage of the population of the weed increases each day.

Explanation:

let 1650.85 = P

So the percentage increases each day =

\frac{P^d-P^{d-1}}{P^{d-1}}*\text{ 100}=\text{ \lparen P}^1^{\text{ }}-\text{ 1\rparen *100}

B

(1650.85^1-1)*100

By putting the value of P

Percentage = 164985%

Final Answer:

164985%

7 0
2 years ago
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