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Olin [163]
3 years ago
12

Three times the result of subtracting three from eight

Mathematics
1 answer:
MrMuchimi3 years ago
5 0
The answer is 15 i believe
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slega [8]

Earth: radius = 6378 kilometer, diameter = 12756 kilometers.

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3 years ago
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Please answer correctly !!! Will mark brainliest !!!!!
Over [174]

Answer:

13

Step-by-step explanation:

g(4) will be found by putting 4 in for r.

g(4) = 25 - 3(4)

g(4)= 25 - 12

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In a fraction times fraction problem, do you multiply the denominator?
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Matt's den is 10 feet longer than it is wide. If the dents area is 231 square feet, what are the dimensions of the room?
sashaice [31]

Answer:

21\: \mathrm{feet\: by}\:  11 \: \mathrm{feet}

Step-by-step explanation:

(Assuming the den is a rectangle)

Let x be the length of the den. Because the length is 10 feet longer than the width, the width of the den can be represented as x-10.

The area of a rectangle is given as l\cdot w, therefore we can form the following equation:

x(x-10)=231

Expanding this, we have:

x^2-10x=231, \\\\x^2-10x-231=0

This factors into (x-21)(x+11)=0, therefore x=21, \: -11.

Because -11 is extraneous, the length of the den is 21 feet and the width is 21-10=11. Thus, the dimensions of the den are \fbox{$21\: \mathrm{feet\: by}\:  11 \: \mathrm{feet}$}.

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3 years ago
Find the coordinates for the midpoint of the segment with endpoints given. (5, 6) and (8, 2)
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We first introduce midpoint formula
X1+X2 over 2;Y1+Y2 over 2
5+8 over 2 ; 6+2 over 2
x=13 over 2 ; Y=4
therefore midpoint=(13/4;4)
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