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Elena L [17]
3 years ago
13

Please help with this

Mathematics
1 answer:
Murljashka [212]3 years ago
5 0

Answer:

i think its b

Step-by-step explanation:

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Combine like terms. What is a simpler form of the expression?<br> -3(-4y+3)+7y
kupik [55]

Answer:

19y - 9

Step-by-step explanation:

-3(-4y + 3) + 7y =

Distribute the -3.

= 12y - 9 + 7y

Combine like terms: 12y + 7y

= 19y - 9

8 0
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ratelena [41]
C the correct answer is C
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What are the solutions of the quadratic equation? 4x^2+9x-9=0
vagabundo [1.1K]

Answer:

x=3/4

x=-3

Step-by-step explanation:

we have

4x^2+9x-9=0

we know that

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

4x^2+9x-9=0

so

a=4\\b=9\\c=-9

substitute in the formula

x=\frac{-9(+/-)\sqrt{9^{2}-4(4)(-9)}} {2(4)}

x=\frac{-9(+/-)\sqrt{225}} {8}

x=\frac{-9(+/-)15} {8}

x=\frac{-9+15} {8}=3/4

x=\frac{-9-15} {8}=-3

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2 years ago
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ruslelena [56]

\sqrt{529}
square root it and divide by pi. square root of 529 is 23. then divided by pi (3.14) is 7.32.
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