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ohaa [14]
3 years ago
14

Solve the system by substitution y=10x y=-3x-104

Mathematics
1 answer:
NISA [10]3 years ago
8 0

Answer:  (-8, -80)

<u>Step-by-step explanation:</u>

y = 10x

y = -3x - 104

Substitute "y" with "10x" into the second equation, then solve for x:

10x = -3x - 104

13x = -104         <em>added 3x to both sides</em>

  x = -8             <em>divided both sides by 13</em>

Next, substitute -8 for x into the first equation to solve for y:

y = 10(-8)

  = -80

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−3(4 – 3x) = 5x + 16 what is x?
OLEGan [10]

Answer:

x = 7 (i think..)

Step-by-step explanation:

-3 (4 - 3x) = 5x + 16

* multiple -3 to each number in the parenthesis

-12 + 9x = 5x + 16

* add 12 to both sides to cancel it and combine like terms on the other side

9x = 5x + 28

* subtract 5x from both sides to cancel it out and combine like terms

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3 years ago
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Part A:

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Part B:

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3 years ago
Selma uses a jogging trail that runs through a park near her home. The trail is a loop that is of a mile long. On Monday, Selma
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Answer:

4.5 miles per hour

Step-by-step explanation:

Selma uses a jogging trail that runs through a park near her home. The trail is a loop that is 3/4 of a mile long. On Monday, Selma ran the loop in 1/6 of an hour. What is Selma's unit rate in miles per hour for Monday's run?

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What is Selma's unit rate in miles per hour for Monday's run?

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3 years ago
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I am Lyosha [343]

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B. 9k^2 + 5k - 1

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Step-by-step explanation:

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3 0
3 years ago
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