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lions [1.4K]
3 years ago
9

Please help me, I need this answered fast please​

Mathematics
1 answer:
wel3 years ago
5 0

Answer:

A.

Step-by-step explanation:

x =  −b +- √b²−4ac /2a

x =  −(−7) +- √(−7)²−4(5)(-18) /2(5)

x=  7 +- √409 /10

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Helena lost her marbles. But then she found them and put them in 44 bags with mm marbles in each bag. She had 33 marbles left ov
Anna007 [38]

Answer:

The total number of marbles is 4m+3

Step-by-step explanation:

There is a typo error in the question.

Helena lost her marbles. But then she found them and put them in 4 bags with m marbles in each bag.

So, total marbles are = 4m

She had 3 marbles left over that didn't fit in the bags.

So, the total number of marbles is 4m+3

5 0
3 years ago
Perform the indicated operation. (12x2 + 7y3)(4x2 + 7y3)
Verdich [7]

ANSWER

48 {x}^{4}  + 60{x}^{2} {y}^{3} +  56 {y}^{6}

EXPLANATION

We want expand:

(12x^2+8y^3)(4x^2+7y^3)

We expand using the distributive to obtain:

12 {x}^{2} (4 {x}^{2}  + 7 {y}^{3} ) + 8 {y}^{3} (4 {x}^{2}  + 7 {y}^{3} )

48 {x}^{4}  + 28 {x}^{2}  {y}^{3} + 32{x}^{2} {y}^{3}  +  56 {y}^{6}

Simplify further by combining the two terms in the middle:

48 {x}^{4}  + 60{x}^{2} {y}^{3} +  56 {y}^{6}

4 0
4 years ago
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Pls help being timed
KonstantinChe [14]

a + and a - = a negative sooo...

-1 - 7 = -8

ANSWER IS B

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3 years ago
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What is the substitution to 3x y=-16 5x y=-20?
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There are 20 boys and 25 girls in a classroom what is the ratio of girls to boys
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4 years ago
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