2 years ago

All of the following are equivalent, except _____. 2x + x x(2 + 1) 2x2 3x

2 answers:

8 0

They are all equal except for C 2*2.... You wouldn't even need to do math for that there's no X anywhere in that one so...

vagabundo [1.1K]2 years ago

7 0

They are all equal except 2x2

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2x+4=4(x+1)−2 solve this equation

olchik [2.2K]

Answer:

x=1

Step-by-step explanation:

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2 years ago

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The ratio of the measure of two supplementary angles is 15:21. What is the measure of the smallest angle?

anyanavicka [17]

Answer:

Step-by-step explanation:

The measure of two supplementary angles = 15:21

The angles are 15x , 21x

15x + 21x = 180 {Supplementary}

36x = 180

x = 180/36

x = 5

Smallest angle = 15 * 5 = 75

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2 years ago

I have one third gallon of juice and one sixth gallon. How many more gallons is need to make three gallons

charle [14.2K]

Answer:

2.5 gallons

Step-by-step explanation:

Make the denominators of the fractions the same and combine them

$\frac{1}{3} =\frac{2}{6}$

$\frac{2}{6} +\frac{1}{6} =\frac{3}{6}$

Then simplify the fraction

$\frac{3}{6} =\frac{1}{2}$

Then subtract how many gallons you have from how many you want

$3 -\frac{1}{2} = 2\frac{1}{2}$

You will need 2.5 gallons to make 3 gallons

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2 years ago

The division of whole numbers is commutative. true or false?

AURORKA [14]

'Commutative' means you can work it in the other direction without changing it.
But 1/2 is not the same number as 2/1 . So I guess division is NOT commutative.

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2 years ago

How to do this problem

Vera_Pavlovna [14]

X(x-1)(x^2+4)=(x^2-x)(x^2+4)=(x^4)+(4x^2)-(x^3)-(4x)=(x^4)-x(x^2+4)+(4x^2)

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2 years ago