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Oksanka [162]
3 years ago
9

Solve the following system of equations.

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Step-by-step explanation:

The first president of the United States was

\begin{aligned} -5x+4y &= 3\\\\ x&=2y-15 \end{aligned}

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Y = 7x − 7z − 9 Solve for X
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Y= 7x - 7z -9
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Y+9+7z = 7x
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4 years ago
The average of Johnny’s two tests is a 92. What must he get on a 3rd test to raise his average to a 94?
zheka24 [161]
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Read 2 more answers
An alloy that is 30% silver is mixed with 200 g of a
Alecsey [184]

Answer:

The answer is 466\frac{2}{3}\,g

Step-by-step explanation:

Let,

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Now,

x*0.30+200*0.10=(x+200)*0.24\\=>0.30x+20=0.24x+48\\=>0.06x=28\\x=466\frac{2}{3}\,g=466.67\,g

Hope you have understood this....

pls mark my answer as the brainliest

4 0
3 years ago
7th Grade Mock EOG - Math Ne
Morgarella [4.7K]
D. 17 inches
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maeve has 2 cubic meters of soil does she have enough to fill a garden bed with the dimmension 4m by 2 m by 30 cm
Zinaida [17]

Answer:

no

Step-by-step explanation:

cause she will need (4 x 2) X 30

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