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katovenus [111]
3 years ago
12

Evaluate the expression for x =5 and y= 1 (x-7y)² pretty confused

Mathematics
2 answers:
Ghella [55]3 years ago
7 0

Answer:

49y^2+y-25=0

Step-by-step explanation:

(5_7y)^2=25-49y^2

y=25-49y^2=49y^2+y-25=0

sveticcg [70]3 years ago
5 0

Answer:

-4

Step-by-step explanation:

So since x=5 and y= 1 the new expression would be 1(5-7) to the second power. Using pemdas, 5-7 is -2. -2 to the second power is -4. negative 4 times 1 is negative 4.

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Answer:

8,000-24x

Step-by-step explanation:

Let

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we know that

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For

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substitute

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3 0
3 years ago
First use front end rounding to estimate the answer. Then multiply to find the exact answer.
iren2701 [21]

Answer:

Estimated answer = 57.0

Exact answer = 54.04

Step-by-step explanation:

Since 19.3 is lesser than 19.5, it will be rounded down to 19.0

Since 2.8 is greater than 2.5, it will be rounded up to 3.0

<u>Estimated multiplication</u>

19.0 * 3.0 = 57.0

<u>Actual multiplication</u>

19.3 * 2.8 = 54.04

4 0
3 years ago
Read 2 more answers
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Firdavs [7]
12 plus 13 plus 5 is 30
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Move the decimal get 16%
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What percentage is equivalent to 2/3
Umnica [9.8K]
The percent is 66.6% with the last 6 repeating
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Why do systems of nonlinear equations sometimes have more than one solution​
Mice21 [21]

Answer:

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Step-by-step explanation:

5 0
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