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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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Last year, the number of students enrolled in school was 847 if this number increases by 9% the next year,how many students will
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Answer:

924

Step-by-step explanation:

The number of students this year will be increased by 9%, so that means you'll have to multiply by 1.09 (109%). This means you take 847 * 1.09 = 923.23 students, which you then round up (because you cannot have a decimal of a student) to 924.

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The length of a hypotenuse of a 30-60-90 triangle is 4. Find the longest leg.
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A block of marble is in the shape of a rectangular prism. The block is 8 feet long, 2 feet wide, and 78 inches high. What is the
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Length of the block of marble in question is (l) = 8 feet
Width of the block of marble in question is (w) = 2 feet
Height of the block of marble in question is (h) = 78 inches
We already know that
1 inch = 0.08 foot
So
Height of the block of marble in question (h) = 78 * 0.08 foot
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Then
Volume of the marble block = i * w * h
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3 years ago
Answer this correctly I’ll give u brainalist + 10 points
Elenna [48]

B

Step-by-step explanation:

it is the only one that has angles that are right next to eachother!

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Answer:

Answer:

35 square feet

Step-by-step explanation:

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