3 years ago

Write an expression for the calculation double 7, multiply 3 and 1, and then subtract the second number from the first number

Mathematics

1 answer:

damaskus [11]3 years ago

6 0

7+7=14 3×1=3 3-7=4 Your answer is 4

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F (x) =2x -4; find f (-4)

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Answer:

f(-4) = -12

Step-by-step explanation:

$f(x)=2x-4$

To calculate f(-4), we need to substitute x in our equation above with -4:

$f(x)=2x-4\\f(-4) = 2*(-4) - 4\\f(-4) = -8-4 = -12$

Note that 2*(-4) = -8

Answer: f(-4) = -12

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3 years ago

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Answer:

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Step-by-step explanation:

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Step 1: Add 20 to both sides.

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Step 2: Divide both sides by 11.

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Yakvenalex [24]

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80%

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Step-by-step explanation:

Simplify the fraction to the most simpliest number, which is 4/5. 4/5 = 80%.

If it’s inverted (as in 60/48), the most simpliest number is 5/4. 5/4 = 125%.

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