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Delicious77 [7]
3 years ago
9

I need a step by step explanation on how you solved the equation.

Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer: x=3 and y=−2

Step-by-step explanation:

x=−2y−1;4x−4y=20

Step: Solve x=−2y−1 for x:

Step: Substitute−2y−1 for x in 4x−4y=20:

4x−4y=20

4(−2y−1)−4y=20

−12y−4=20(Simplify both sides of the equation)

−12y−4+4=20+4(Add 4 to both sides)

−12y=24

−12y

−12

=

24

−12

(Divide both sides by -12)

y=−2

Step: Substitute−2 for y x=−2y−1:

x=−2y−1

x=(−2)(−2)−1

x=3(Simplify both sides of the equation)

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#1- Jennifer made a box plot to summarize this data. 124, 118, 129, 139, 133, 129, 142, 135, 122, 137. What is the median, the l
svp [43]

Answer:

B or

Lower quartile: 124

Median: 131

Upper quartile: 137

Step-by-step explanation:

To find the median first make the data in order from greatest to least:

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Then find the middle 2 numbers which are 129 and 133

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To find the Lower quartile find the number in the middle of the first 5 numbers which is 124

To find the Upper quartile find the number in the middle of the second 5 numbers which is 137 so

B or

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Median: 131

Upper quartile: 137

8 0
3 years ago
I need help please! It would be very helpful ;) if ya helped me 0-0
Anna [14]

Answer:

im thinking B. or C.

Step-by-step explanation:

again not sure

again sorry if wrong

8 0
3 years ago
How do you start this
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You have two equations.
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expand, collect like terms, factor to find x, then plug x value back into original equation to find y
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3 years ago
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Answer:

=x^16y^26

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