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matrenka [14]
3 years ago
14

8x-6y=-20 -16x+7y=30

Mathematics
1 answer:
o-na [289]3 years ago
8 0
<span>Simplifying 8x + -6y = -20

</span><span>Solving 8x + -6y = -20

</span><span>Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right

</span><span>Add '6y' to each side of the equation. 8x + -6y + 6y = -20 + 6y

</span><span>Combine like terms: -6y + 6y = 0 8x + 0 = -20 + 6y 8x = -20 + 6y
</span>
Divide each side by '8'. x = -2.5 + 0.75y


<span>Simplifying x = -2.5 + 0.75y</span>

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the ratio of girls to boys in the six grade class is seven to six. If there are 84 girls, how many boys are in the six grade
padilas [110]
There are 72 boys. 7:6 = 84:?, divide 84 by 7, you get 12. Multiply 6 by 12 to get the answer.
4 0
2 years ago
Luisa recieved $108 for a necklace she sold on an online auction. The auction site took a fe of 10% of selling price. What was t
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3 0
3 years ago
Round off to the nearest <br> 3,142
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5 0
3 years ago
Natalie paid $20.7 for 3 small pizzas and a salad which was $3.
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20.70=3p+3
17.70=3p
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$20.70=3p+3

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6 0
3 years ago
Noa hopes to pick the winning ticket during her math class’s raffle. the student who picks the ticket with a true statement will
Natali5045456 [20]

Answer: The winning ticket is 2(x-6)=-35 is equivalent to 2x=-23.



Step-by-step explanation:

Let's check all the options

4(x-5)=35 is not equivalent to 4x=40

\text{since }4(x-5)=35\\\Rightarrow4x-20=35\\\Rightarrow4x=35+20\\\Rightarrow4x=55

8(x-7)=35 is not equivalent to 8x=28


\text{since }8(x-7)=35\\\Rightarrow8x-56=35\\\Rightarrow8x=35+56\\\Rightarrow8x=91

2(x-6)=-35 is equivalent to 2x=-23


\text{since }2(x-6)=-35\\\Rightarrow2x-12=-35\\\Rightarrow2x=-35+12\\\Rightarrow2x=-23

9(x-6)=-35 is not equivalent to 9x=-29

\text{since }9(x-5)=-35\\\Rightarrow9x--40=-35\\\Rightarrow9x=-35+40\\\Rightarrow9x=5

Thus, the winning ticket is 2(x-6)=-35 is equivalent to 2x=-23.

4 0
2 years ago
Read 2 more answers
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