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Korolek [52]
3 years ago
5

Plz awnser i dont know

Mathematics
1 answer:
krek1111 [17]3 years ago
6 0

Answer:

Question 1. 1/2 hour

Question 2. 1/6

Question 3. 5/12 eggs

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Solve.<br> y=x - 7<br> 5+2y=7
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Answer:

\huge\boxed{x=8;\ y=1\to(8;\ 1)}

Step-by-step explanation:

\left\{\begin{array}{ccc}y=x-7&(1)\\5+2y=7&(2)\end{array}\right\\\\\text{Substitute (1) to (2) and solve for x:}\\\\5+2(x-7)=7\qquad\text{use the distributive property}\\\\5+(2)(x)+(2)(-7)=7\\\\5+2x-14=7\\\\2x+(5-14)=7\\\\2x-9=7\qquad\text{add 9 to both sides}\\\\2x-9+9=7+9\\\\2x=16\qquad\text{divide both sides by 2}\\\\\dfrac{2x}{2}=\dfrac{16}{2}\\\\\boxed{x=8}

\text{Substitute it to (1):}\\\\y=8-7\\\\\boxed{y=1}

8 0
3 years ago
Read 2 more answers
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8= 8 + 4x +5x

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