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3 years ago

Is the given number a solution of the equation? Which value of c is a solution to the equation c = 2c – 4?

Mathematics

1 answer:

serg [7]3 years ago

5 0

C - 2c = 2c - 2c - 4
c - 2c = -4
-c = -4
c = 4

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Diff. / Original amount= % of increase or decrease

V125BC [204]

Answer:

% increase = $\frac{\text{ Increased number -Original number }}{\text{Original number}} \times 100\%$

% decrease = $\frac{\text{ Original number - Decreased number }}{\text{Original number}} \times 100\%$

Step-by-step explanation:

Percentage Increase:

Let there be an original number. If it increased to a certain value we can calculate the percentage increase value with the help of following formula:

% increase = $\frac{\text{ Increased number -Original number }}{\text{Original number}} \times 100\%$

Percentage Decrease:

Let there be an original number. If it decreases to a certain value we can calculate the percentage decrease with the help of following formula:

% decrease = $\frac{\text{ Original number - Decreased number }}{\text{Original number}} \times 100\%$

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4 years ago

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12345 [234]

Answer:

y = 18

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3 years ago

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Suppose you round 43,257,529 to43,300,000.to what place value did you round the number

Arlecino [84]

100,000ths place. You are welcome

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3 years ago

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Hitman42 [59]

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3 years ago

Which expression represents -8x^2+54x+140 in factored form?

Elenna [48]

Answer:

D. (x+2)(-8x+70)

Step-by-step explanation:

-8x^2+54x+140

Factor out -2

-2(4x^2+27x+70)

Factor

-2(x+2)(4x-35)

Option D is the same answer if we multiply -2 in the second term

(x+2) (-8x+70)

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3 years ago