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ad-work [718]
3 years ago
12

Which ordered pair is a solution to the system of equations?

Mathematics
1 answer:
enot [183]3 years ago
3 0

Answer:

  • See below

Step-by-step explanation:

<u>Given system:</u>

  • 2x - y = - 2
  • 15x - 2y = - 7

<u>Solve by elimination, multiply the first equation by - 2 and add up the equations:</u>

  • -2(2x - y) + 15x - 2y = - 2(- 2) - 7
  • -4x + 2y + 15x - 2y = 4 - 7
  • 11x = - 3
  • x = - 3/11

<u>Find the value of y:</u>

  • 2( - 3/11) - y = - 2
  • -6/11 - y = - 2
  • y = 2 - 6/11
  • y = 1/11

<u>Solution is:</u>

  • ( - 3/11, 1/11)
  • <em>None of the answer choices is matching this solution. Something must be wrong with the given equations.</em>
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asambeis [7]

Answer:

9

Step-by-step explanation:

The reason why it is 9 is because if you look to the bigger triangle, you can see that 15 is 3/4 the size of 20, so once you find what number is 3/4 of 12, you have the answer, 9! Hope this helps!

6 0
4 years ago
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dimaraw [331]

Answer:

=468 m^2

Step-by-step explanation:

Surface area of a prism is

SA = 2 (lw + wh + hl)  where l is length, w is width and h is height

SA = 2 ( 12*6 + 6*9 + 9*12)

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5 0
3 years ago
Read 2 more answers
6 students share 4 bagels equally
babunello [35]
They would each get one and a half bagels because 6/4= 1.5
3 0
4 years ago
In triangle abc, the measure of angle b is 20 more than three times the measure of angle
sleet_krkn [62]
Let x be the degree of angle a. 

Angle b: 20+3x
Angle c: 55+x 

We know that all angles add up to 180 degrees. 

180=x+(20+3x)+(55+x) 
180= 5x+75 
180-75=5x 
105/5=x
21=x 

Angle a: 21 degrees 
Angle b: 20+3(21) => 83 degrees 
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Hope I helped :) 
5 0
3 years ago
Plz help,.................refresh the page before u answer\
Eddi Din [679]
So if p then q
the converse is if q then p

so
if x is odd then 2x+1 is odd
converse is
if 2x+1 is odd, then x is odd

4th option
5 0
3 years ago
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