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Len [333]
3 years ago
13

100 points with work

Mathematics
2 answers:
nirvana33 [79]3 years ago
8 0

Answer:

he said it not me

muminat3 years ago
4 0

Answer:

jacky 12 809 n-t

Step-by-step explanation:

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Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. A rocket is launched from atop a
umka2103 [35]
When it hits the ground, then h=0
find the xintercept or in this case the tintercepts
c=76
v=135

h=-16t^2+135t+76
use quadratic formula

ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

a=-16
b=135
c=76

x=\frac{-135+/- \sqrt{135^2-4(-16)(76)} }{2(-16)}
x=\frac{-135+/- \sqrt{18225+4864} }{-32}
x=\frac{-135+/- \sqrt{23089} }{-32}
aprox
x=-0.5297 or 8.967
exclude the negative root since you can't have negative time

means that it takes 8.97 seconds to hit the ground


4 0
3 years ago
How do you solve 2r^2+2r-24=0 using the quadratic formula ?
kramer
2r2+2r−24=0

Step 1: Factor left side of equation.

2(r−3)(r+4)=0

Step 2: Set factors equal to 0.

r−3=0 or r+4=0

r = 3 or r = −4

7 0
3 years ago
Do you agree with the researchers method of predicting the population? Why or why not?
Burka [1]

Yes, I agree with the researcher's method. All the values of a_{n} in the table correspond to the values of n by using their formula.

Step-by-step explanation:

Step 1:

If we substitute the values of n in the researcher's equation and we get the right values of a_{n}, we can agree with the researcher's method.

The researcher's formula is a_{n} = 1000(2)^{n-1}. Here a_{n} is the wombat population and n is the number of years.

Step 2:

When n = 1, a_{1} = 1000(2)^{1-1} =  1000(1) = 1,000,

when n = 2, a_{2} = 1000(2)^{2-1} = 1000(2) = 2,000,

when n = 3, a_{3} = 1000(2)^{3-1} = 1000(4) = 4,000,

when n = 4, a_{4} = 1000(2)^{4-1} = 1000(8) = 8,000,

when n = 5, a_{5} = 1000(2)^{5-1} = 1000(16) = 16,000.

As all the values correspond to the values on the table, I agree with the researcher's method.

6 0
3 years ago
The variable x represents w value in the set {4, 6, 7, 8}. Which value of x makes 2 (x - 4) + 3 = 7 a true statement​
navik [9.2K]
X would be 6 I’m not sure about w.
3 0
3 years ago
Hello, please help me with this question, thank you very much.
LUCKY_DIMON [66]

Answer:

(A) <BAC = <ABC

(B) <C = 68°

( 2 * <A + <C = 180°)

7 0
3 years ago
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