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zhenek [66]
3 years ago
15

Can someone help me with this

Mathematics
2 answers:
xeze [42]3 years ago
6 0
2^2 + 4 x 2 + 7 x 6
evaluate the power
4 + 4 x 2 + 7 x 6
____________
5-2^3
multiply
4+8 +7x6
_______
5-2^3
multiply
4 + 8 + 42
_______
5-2^3
evaluate the power
4+8+42
______
5-8
find the sun of the positive numbers
54
___
5-8
find the difference
54
__
-3

reduce

-18
AleksAgata [21]3 years ago
4 0
You have to plug in 2 for a and 6 for b.

(2)^2 + 4(2) + 7(6) 4 + 8 + 42 54
————————— = —————- = ——
5 - (2)^3 5 - 8 -3

The answer is -18.

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The length of the rectangle is 4cm more than it's width.if the perimeter is 20cm. find the width​
oksian1 [2.3K]

Answer:

  3 cm

Step-by-step explanation:

The given relation between length and width can be used in the perimeter formula to find the width.

__

Let w represent the width of the rectangle in centimeters. The length is 4 cm more, so can be represented by (w+4). Using these values and the given perimeter in the perimeter formula, we find ...

  P = 2(L +W) . . . . . perimeter formula

  20 = 2((w +4) +w) . . . . known values substituted

  10 = 2w +4 . . . . . . . . divide by 2, collect terms

  6 = 2w . . . . . . . . . subtract 4

  3 = w . . . . . . . . divide by 2

The width of the rectangle is 3 cm.

__

<em>Additional comment</em>

The length is 7 cm.

8 0
3 years ago
Ozzie put 14gal of gas in his truck. Convert the volume to liters. Use 1qt=0.95L. Do not round your answer.
Savatey [412]

Answer: 53.2\ L

Step-by-step explanation:

You know that Ozzie put 4 gallons of gas in his truck.

Notice the you must use:

1\ quart=\ 0.95\ liters

Then, the first step is to make the conversion from gallons to quarts.

Since:

1\ gal=4\ qt

You get:

(14\ gal)(\frac{4\ qt}{1\ gal})=56\ qt

Finally, knowing the volume in quarts, you can make the conversion from quarts to liters. This is:

(56\ qt)(\frac{0.95\ L}{1\ qt})=53.2\ L

Therefore, Ozzie put 53.2 liters of gas in his truck.

3 0
4 years ago
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EleoNora [17]

Answer:

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Step-by-step explanation:

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Answer:

Mandy should add the tens before she adds the ones.

Step-by-step explanation:

There are no other good answers and the correct answer is 82 pennies.

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