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katrin2010 [14]
2 years ago
10

7x-3y=-12. Name 2 possible answers for (x,y)

Mathematics
1 answer:
anzhelika [568]2 years ago
6 0

Answer:

x = (-12/7 , 0)

y= (0,4)

Step-by-step explanation:

Plug y=0 into the equation and solve the resulting equation 7x=−12 for x

7x = -12

/7      /7

x = -12/7     and y =0

Plug x=0 into the equation and solve the resulting equation −3y=−12 for y

-3y = -12

/-3     -3

Y = 4        and X = 0

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MakcuM [25]

Answer:

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Step-by-step explanation:

since x is positive, |x+8| becomes x+8. since x>5, 5-x is negative so |5-x| becomes x-5 (-(5-x)=-5+x=x-5). so now we have x-5-(x+8)=x-5-x-8=-5-8=-13

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2 years ago
Elisa withdrew $20 at a time from hermano account and withdrew a total of $140. Francis withdrew $45 at a time from his bank acc
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Elisa withdrew $20 to equal $140 if you divide 140/20 is how much times she withdrew was a total of 7. While the same with with Francis except his total was almost 7 with it being 6.75
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3 years ago
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dem82 [27]

Answer:

75%

Step-by-step explanation:

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8 0
3 years ago
If EF bisects angle CEB, angle CEF=7x + 21 and angle FEB = 10x - 3, find the measure of DEB.
morpeh [17]

Answer: DEb = 26°

Step-by-step explanation:

<u>Given information</u>

CEF = 7x + 21

FEB = 10x - 3

<u>Given expression deducted from the definition of the bisector</u>

FEB = CEF

<u>Substitute values into the expression</u>

10x - 3 = 7x + 21

<u>Subtract 7x on both sides</u>

10x - 3 - 7x = 7x + 21 - 7x

3x - 3 = 21

<u>Add 3 on both sides</u>

3x - 3 + 3 = 21 + 3

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<u>Divide 3 on both sides</u>

3x / 3 = 24 / 3

x = 8

<u>Find the sum of the angle of CEF and FEB</u>

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=7 (8) + 21 + 10 (8) - 3

=56 + 21 + 80 - 3

=77 + 80 - 3

=157 - 3

=154

<u>Subtract 154 from the straight angle</u>

DEB = 180 - 154

\boxed{DEB = 26}

Hope this helps!! :)

Please let me know if you have any questions

8 0
2 years ago
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