Which expression is equal to the expression below? (7•2)

Mathematics

2 answers:

allochka39001 [22]3 years ago

5 0

Answer:

Step-by-step explanation:

When the exponent is outside the parenthesis, the exponent is connected to every part of the equation.

brilliants [131]3 years ago

3 0

Answer:

Step-by-step explanation:

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What is 1/3 plus 1/2 in fraction form

Citrus2011 [14]

Answer:

5/6

Step-by-step explanation:

Hope this helped!!!

7 0

3 years ago

Solve 2x+3y=2<br> 5x-y=-29<br> By elimination

Andreyy89

Answer:

$\huge\boxed{x=-5,\ y=4\to(-5,\ 4)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}2x+3y=2\\5x-y=-29&\text{multiply both sides by 3}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+3y=2\\15x-3y=-87\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad17x=-85\qquad\text{divide both sides by 17}\\.\qquad\dfrac{17x}{17}=\dfrac{-85}{17}\\.\qquad\boxed{x=-5}\\\\\text{Substitute it to the second equation:}\\\\5(-5)-y=-29\\\\-25-y=-29\qquad\text{add 25 to both sides}\\\\-25+25-y=-29+25\\\\-y=-4\qquad\text{change the signs}\\\\\boxed{y=4}$