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timofeeve [1]
3 years ago
5

What is the solution to 5-2x^2=-15?

Mathematics
1 answer:
Phantasy [73]3 years ago
6 0
Isolate x.

-2x^{2}=-20
x^{2}=10
x=\sqrt{10}


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Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d
zubka84 [21]
From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
x=170\\\\
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5 0
3 years ago
Read 2 more answers
HELP ME QUICK PLEASE THIS IS A TEST OMG
xxMikexx [17]

Answer:

It's 1/2,-2 just did the math.

3 0
2 years ago
Factor the expression below. x2 - 4x + 4 A. 4(x2 - x + 1) B. (x - 2)(x + 2) C. (x + 2)(x + 2) D. (x - 2)(x - 2)
Tanzania [10]

Answer:

D. (x - 2)(x - 2)

Step-by-step explanation:

x2 - 4x + 4 = x² - 2x - 2x +4

                  = x(x-2)  -  2(x - 2)                    

                  = (x-2)(x-2)

HINT:   - 2x +4  = -2 * x  + (-2) * (-2) = -2 ( x -2)

4 0
3 years ago
Help please now help dont be childish will banned ​
belka [17]

Answer:

X, process, y

-2, 3(-2), -6

-1, 3(-1), -3

0, 3(0), 0

1, 3(1), 3

2, 3(2), 6

X = -2, -1, 0, 1, 2,

Y = -6, -3, 0, -3, -6

Step-by-step explanation:

Coordinates for the graph: (-2,-6), (-1,-3), (0,0), (1,3), (2,6)

Graph is the image I added onto this.

Solving for Y below:

3(-2)= -6

3(-1)= -3

3(0)= 0

3(1)= 3

3(2)= 6

Hope this helps.

5 0
2 years ago
Anyone want to help me out?
zhuklara [117]
First answer haha~ I think I answered all your questions so far ;)
5 0
3 years ago
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