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Dafna1 [17]
1 year ago
6

Select all the expressions that are equivalent to 40% of 90. A. 72 B. 36 C. 4/5x9. D. 40/100 divided by 90. E. 2/5x90

Mathematics
1 answer:
leonid [27]1 year ago
5 0

First, calculate 40% of 90

90 x (40/100 ) = 90 x 0.4 = 36

A. 72 NO

B. 36 YES

C. 4/5 x 9 = 36/5 NO

D. 40/100 / 90 = 1/225 NO

E. 2/5 x 90 = 36 YES

Answers:

B and E

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X/5 -8=4 find the value of x
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Answer:

x=60

Step-by-step explanation:

I'm assuming you meant this: (x/5)-8=4

In which case you would add 8 to both sides to get rid of the 8 on the left (your goal is to get x by itself so you want to move the numbers on the x side to the other side of the equal sign)

(x/5)=12

Then you would multiply 5 on both sides to get rid of the fraction with the 5 on the bottom on the left side.

x=60

There's your answer.

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Which expression is equal to (−4x2−1)(2x2+3)?
Leya [2.2K]

Answer:

The first one:

−8x4−14x2−3

Step-by-step explanation:

(-4•2-1)(2•2+3)

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-8 - 1 = -9

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4+3 = 7

(-9)(7) = -63

Now we find the one that equals -63:

-8•4-14•2-3

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BAM! THE ANSWER!

7 0
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Answer:

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Step-by-step explanation:

This equation is in the form of y=mx+b

m is the slope and b is the y-intercept.

Therefore, the slope is 2 and the y-intercept is -5

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Mr. Park pays $1000 per month in rent. Before depositing his paycheck, his checking account balance was $359.47. After the depos
IrinaVladis [17]

Answer:

Mr Park has enough money to pay his rent.

Step-by-step explanation:

The amount of the monthly rent paid  = $1000

The account balance after depositing the paycheck = $1441.33

Now, to pay the rent,account should have more than the rent money $1000

Also, $1441.33  >  $1000

⇒ The amount in the bank after depositing the paycheck   >  The rent to be paid

Hence, Mr Park has enough money to pay his rent.

6 0
3 years ago
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