2 years ago

Which fractions are equivalent to Two-twelfths plus four-twelfths? Check all that apply.

Mathematics

1 answer:

Aneli [31]2 years ago

8 0

Answer:

1/2, 2/4,& 3/6

Step-by-step explanation:

Well, two-twelfths plus four-twelfths is equal to size-twelfths which is equal to one half. Using this we can figure out which other fractions are equal to one half and answer the problem.

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Amiraneli [1.4K]

Answer:

1 and 3, 2 and 4

Step-by-step explanation:

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2 years ago

X = -2y + 300 3y = 800 - 4x

devlian [24]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x=-2y+300&(1)\\3y=800-4x&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\3y=800-4(-2y+300)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\3y=800+(-4)(-2y)+(-4)(300)\\\\3y=800+8y-1200\\\\3y=8y-400\qquad\text{subtract}\ 8y\ \text{from both sides}\\\\-5y=-400\qquad\text{divide both sides by (-5)}\\\\y=80\\\\\text{Put it to (1):}\\\\x=-2(80)+300\\\\x=-160+300\\\\x=140$