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mr Goodwill [35]
3 years ago
13

There are 9 students in a class: 5 boys and 4 girls.

Mathematics
1 answer:
sattari [20]3 years ago
4 0
Where’s the question?
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A water balloon is 5 feet above the ground when Sally launches it into the air. Use the quadratic equation 0 = -t2 + 4t + 5 to f
Alborosie

Answer:

2-sqrt14/2, 2+sqrt13/2.

Step-by-step explanation:

What you do is you have to do the quadratic equation like it says in the problem.

x=  −b± sqrtb^2 −4ac /2a .

a=-2, b=4, c=5.

x=-4±sqrt(4)^2-4(-2)(5)/2(-2).

x=-4±sqrt16+40/-4.

x=-4±2sqrt14/-2.

2-sqrt14/2, 2+sqrt13/2. is your answer once you have done everything.

​  

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6 0
3 years ago
|4x-9|=5x Does anybody know the answer to this ?
oksano4ka [1.4K]

|4x-9|=5x

subtract 4 to both sides

and that will give you

|-9|=x then the 9 turns positive because of the brackets

9=X

3 0
3 years ago
PLEASE help me please help​
dexar [7]

Answer:

i can't see it

Step-by-step explanation:

3 0
3 years ago
What are the coordinates of the centroid of a triangle with vertices J(-4,2) K(2,4) and L(0,-2)
evablogger [386]
It would go by (-4,2) then (0,-2) next would be (2,4)
8 0
3 years ago
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1x+2x = what?<br> Will mark brainiest whatever that mean
MAXImum [283]

Answer:

3x

Step-by-step explanation:

7 0
3 years ago
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