3 years ago

Translate the sentence into an equation.

Mathematics

1 answer:

Klio2033 [76]3 years ago

5 0

Answer:

Step-by-step explanation:

2 times a number, 2y

the sum of that and 9, 2y+9 ‘is’ 7

2y+9=7

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andriy [413]

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3 years ago

Write the sentence as an equation. 396 subtracted from p is t

Paladinen [302]

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3 years ago

Read 2 more answers

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

devlian [24]

Answer:

Step-by-step explanation:

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