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scoray [572]
3 years ago
8

(6x - 5y = 34 Lin is solving this system of equations: 3x +2y = 8 She starts by rearranging the second equation to isolate the y

variable: y = 4-1.5x. She then substituted the expression 4 - 1.5x for y in the first equation, as shown: 6x - 5(4- 1.5x) 6x - 20 – 7.5x -1.5x 34 = 34 = 54 = -36 Where did Lin go wrong when solving this problem?​
Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0

Answer:

It is a little hard to see where your steps are for the equation, but x = 4, and I will explain:

Step-by-step explanation:

We know y = -1.5x +4, so we plug that into the equation

6x - 5(-1.5 + 4) = 34

6x +7.5x - 20 = 34    Here we distributed the -5 into the parenthesis.

13.5x -20 = 34

13.5 = 54

x = 4

Hope this helps!

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Westkost [7]
Given

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and
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expand
112=2x²+14x+24
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0=x²+7x-44
factor
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11 and -4
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set to 0

x-4=0
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false, measures can't be negative

x=4


height=x+4
height=4+4=8


base=2x+6
base=2(4)+6=8+6=14



x=4 and base=14 and height=8

8 0
3 years ago
Please help asap<br> find 140% of 82
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Answer:

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Step-by-step explanation:

3 0
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I hope this helps:

3 0
3 years ago
Can enyone put 457÷4 in long division and show me a picture of it
STALIN [3.7K]
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