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konstantin123 [22]
3 years ago
14

4

Mathematics
1 answer:
const2013 [10]3 years ago
4 0

Answer:

the third

Step-by-step explanation:

your photo is not clear, and your explanations for your question is not clear also.

as we are tackling the substraction and the addition questions between matricxs.We could simply +/- every number correspondingly.

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The measures of three sides of a triangle can be represented by 2x, 3x and -5, and 4x + 2. The perimeter of the triangle is 65 i
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The sides are 2x, 3x-5 and 4x+2
perimiter is the sum of the sides

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2x+3x-5+4x+2=63 is an equation

b.
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group like terms
2x+3x+4x-5+2=65
add like terms
9x-3=65
add 3 to both sides
9x=68
divide both sides by 9
x=68/9


2x=2(68/9)=136/9 in
3x-5=3(68/9)-5=(68/3)-5=(68/3)-(15/3)=53/3
4x+2=4(68/9)+2=272/9+2=272/9+18/2=290/9

the side lengths are 136/9in, 53/3in, and 290/9in
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3 years ago
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Step-by-step explanation:

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3 years ago
Determine the slope of a line that is perpendicular to the line y = -2x + 7
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There are20 keys on a keychain. One of the keys starts a car. If a key is randomly chosen what is the probability that it starts
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