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marin [14]
3 years ago
5

Nina wants to put color tiles on a square three color tiles fit across the top of the square how many rows and Columns of the sq

uares will Nina need how many color tiles will she use in all
Mathematics
1 answer:
Nonamiya [84]3 years ago
8 0
Nina will need 3 columns,3 rows and she will use 9 squares in all. 
Hope that helped
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Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?
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Answer:

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Step-by-step explanation:

y = 9x^2 + 9x – 1

first isolate the x terms

y = 9(x^2 +x) -1

then add 1/4 inside the brackets to make it a perfect square trinomial (half of the coefficient of the x term squared is how we get 1/4)

since we just added 1/4 we need to subtract what we just added to balance the equation. so 1/4 times 9 is 9/4 ( the number we just added to the equation). then you subtract 9/4 outside of the brackets.

y = 9(x^2 +x +1/4) -1 -9/4

then simplify

y = 9(x+1/2)^2 -13/4

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Katena32 [7]

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d. d=2

Step-by-step explanation:

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3 years ago
Solve - 5k + 25 = 40 – 2k.
OlgaM077 [116]

Answer:

K= -5

Steps:

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Then you get your answer.

8 0
3 years ago
Read 2 more answers
Use the substitution method to solve the system of equations. Choose the correct ordered pair. y=6x-4 y=7x-7 A. (4, 18) B. (5, 9
White raven [17]

Answer:

C (3,14)

Step-by-step explanation:

y=6x-4

y=7x-7

6x-4=7x-7

-x=-3

x=3

y=6*3-4=14

5 0
2 years ago
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