3 years ago

I need help answering this question please help

Mathematics

1 answer:

MArishka [77]3 years ago

8 0

40

Or at least that what my calculator says.

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What's the sum of 3 times m and 5

DerKrebs [107]

3m+5

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3 years ago

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Will do a brainly! 4/7=18/31.5

german

Answer:

True

Step-by-step explanation:

4 ÷ 7 = 0.5714
18 ÷ 31.5 = 0.5714
Because they are the same result, the two fractions are equal. Therefore, the equation is true.

I hope this helps!

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3 years ago

Im so bad at math. Help please!

Ulleksa [173]

Answer is C. Granted gas prices are fixed. if you buy 1 gallon.. price is x. if you buy 2 gallons, price is 2x. and so on. constant rate of change.

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3 years ago

Choose the correct simplification of 8x2(4x 2x2 − 1). (5 points) group of answer choices 32x4 − 16x3 8x2 32x4 16x3 − 8x2 16x4 −

nekit [7.7K]

The second option is the correct answer

$16x^{4}+40x^{3} -24x^{2}$

The expression given to us is:

$8x^{2} (5x+2x^{2}-3 )$

Herein, we can simplify it by opening up the bracket and multiplying each term inside the bracket by the term which is outside the bracket.

Thus, we get:

$8x^{2} (5x+2x^{2}-3 )=8*5x^{2+1} +8*2x^{2+2}-8*3x^{2}$

$40x^{3} +16x^{4}-24x^{2}$

Rearranging the above expression in descending order of power we get:

$16x^{4}+40x^{3} -24x^{2}$

From the given options we can see this is the second option. Hence the second option is the correct answer.

Learn more about equation here brainly.com/question/14180340

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2 years ago

75% of a number is 4.5 cm

Maru [420]

N(75/100)=4.5 multiply both sides by 100

75n=450 divide both sides by 75

n=6cm

7 0

3 years ago

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