2 years ago

What is the result when the number 15 is decreased by 20%?

Mathematics

1 answer:

Lana71 [14]2 years ago

7 0

Answer: 12

Step-by-step explanation:

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Find a number that us 5 times as much as 4 divided by 2

Alexeev081 [22]

4 divided by 2 is equal to 2. A number that is 5 times that would be 10, which is 2x5.

Not sure if it's correct, but I hope it helps :)

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2 years ago

From midnight to 6 am , the temperature rose 8C. at 6am, the temperature was -20c. what was the temperature at midnight?

murzikaleks [220]

Take -20 - 8 = -28 C. the temperature at midnight

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2 years ago

(2x-7)-(4x^2+6x-3)+(x^2+4)

masha68 [24]

Answer:

$-3x^2-4x$

Step-by-step explanation:

Simplify:

$\left(2x-7\right)-\left(4x^2+6x-3\right)+\left(x^2+4\right)$

$=2x-7-\left(4x^2+6x-3\right)+x^2+4$

Group same factor:

$=-\left(4x^2+6x-3\right)+x^2+2x-7+4$

Add :

$=-\left(4x^2+6x-3\right)+x^2+2x-3$

Apply the distributive law: -(a+b) = -a - b

$-\left(4x^2+6x-3\right)=-4x^2-6x+3$

$=-4x^2-6x+3+x^2+2x-3$

Group same factor:

$=-4x^2+x^2-6x+2x+3-3$

Subtract:

$=-4x^2+x^2-6x+2x$

Add:

$=-3x^2-6x+2x$

Group same factor:

$=-3x^2-4x$

Hence answer = $-3x^2-4x$

<u><em>~lenvy~</em></u>

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1 year ago

What is 3/4 of 50 for a math assignment.

Burka [1]

Answer:

37 1/2

Step-by-step explanation:

multiply the two numbers if their is an “of” in the statement

7 0

3 years ago

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What is the dashed green part of the figure below?

Shtirlitz [24]

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3 years ago