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Scorpion4ik [409]
3 years ago
9

Seven less than a third of the sum of a number and two​

Mathematics
1 answer:
elena-s [515]3 years ago
3 0

The number is 15.

   2x/3-7=3

   3(2x/3–7)=3×3

   2x-21+21=9+21

   2x/2=30/2

   x=15

Proof

   15×2=30

   30/3=10

   10–7=3

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We can use ratios, in other words, if one part of the photo is changed x times, how many times does the other part change?

We can set up the proportion as :
width 1 : length 1 = width 2 : length 2

20 : 30 = 5 : x

We do inverse multiplication, or multiply the outer with outer and inner with inner (W1 * L2 and L1 * W2)

20*x = 30*5
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The THIRD statement is not true.
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3 years ago
Given a graph for the transformation of f(x)=f(kx), determine the k value
jarptica [38.1K]

Answer:

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Step-by-step explanation:

Compare any two points on same horizontal line.

<u>The easy one is:</u>

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4 0
3 years ago
Whats issssssss 4x - 8 = 4x
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Answer:

no solutions

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3 0
4 years ago
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