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Alenkasestr [34]
4 years ago
6

What is the answer 2(4y+1)=3y

Mathematics
1 answer:
SCORPION-xisa [38]4 years ago
4 0
2(4y+1) = 3y. We need to solve for y.
First let's get ride of the parenthesis by developing 2(4y+1). This means to multiply 2 by 4y and 2 by 1, and add them.
2(4y+1) = 2*4y + 2*1 = 8y + 2
So 2(4y+1)=3y
8y+2 = 3y
Then you subtract 8y from each side to have the variables on a side and the numbers on the other:
3y - 8y = 8y + 2 - 8y
-5y = 2
Then you divide each side by -5 to get the variable y alone on a side and its value on the other:
(-5y)/-5 = 2/-5
y = -2/5

You can re-check your answer (very important):
2(4y + 1) = 2(4*-2/5 + 1) = -1.2
3y = 3 * -2/5 = -1.2
So 2(4y+1)=3y= -1.2
The answer has been approved.

Hope this Helps! :)
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the sum of the reciprocals of two consecutive even integers is 9/40. this can be represented by the equation shown 1/x + 1/(x+2)
Ivanshal [37]

Answer:

  8, 10

Step-by-step explanation:

Multiplying the equation by the product of the denominators, we have ...

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  80x +80 = 9x^2 +18x . . . . eliminate parentheses

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  9x(x -8) +10(x -8) = 0 . . . . . factor pairs of terms

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Solutions are ...

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The integers are 8 and 10.

_____

<em>Comment on the attachment</em>

I find a graphing calculator to be a nice tool for solving these. It finds zeros easily, so writing the equation so it equals zero is a useful first step.

5 0
4 years ago
For 9x+25=88, Deens wrote the situation "I bought some shirts at the store for $9 each and received a $25 discount. My total bil
Sliva [168]
Total bill would be excluding the discount, so Deens has included the discount on the wrong side of the equation.

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7 0
3 years ago
Solve the equation 5.25x+6=74.25
Marina86 [1]
It 13 because you subtract 6 from 74.25 and then divide by 5.25
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3 0
3 years ago
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GaryK [48]

Answer:

0.50

Step-by-step explanation:

0.50

5 0
3 years ago
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