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zhannawk [14.2K]
3 years ago
9

If 9x+10y=2 and -8x-6y=-10 are true equations, what would be the value of x + 4y?

Mathematics
1 answer:
qwelly [4]3 years ago
5 0
Use elimination method to get -8

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Jeff's math grade is based on two quizzes, two tests, and one project. The table shows Jeff’s scores on these items, as well as
vazorg [7]

Answer:

Step-by-step explanation:

If you can post the table then I'lI be happy to help

6 0
3 years ago
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How to solve -5 + 13y = -7
zubka84 [21]

Answer:

y = -2/13

Step-by-step explanation:

-5 + 13y = -7

Add 5 to each side

-5+5 + 13y = -7+5

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Divide by 13

13y/13 = -2/13

y = -2/13

5 0
4 years ago
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Solve with a system of equations: Two angles are supplementary if the sum of their measures are 180 degrees. If one is 90 degree
julsineya [31]

Answer:

  The measures of the angles are 150° and 30°.

Step-by-step explanation:

Let x and y represent the measures of the angles, with x representing the larger angle.

  x + y = 180 . . . . . . the two angles are supplementary

  x = 90 + 2y . . . . . one is 90° more than twice the other

___

Substituting the expression given by the second equation into the first, we have ...

  (90 +2y) +y = 180

  3y = 90 . . . . . . . . . . collect terms, subtract 90

  y = 30 . . . . . . . . . . . divide by the coefficient of y

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The measures of the angles are 150° and 30°.

6 0
4 years ago
Please answer this correctly without making mistakes
serious [3.7K]

Answer:

554/5,948

Step-by-step explanation:

burgers with pickles: 554

burgers without pickles: 5,394

total burgers = 554 + 5,394 = 5,948

ratio of numbers of burgers with pickles to total burgers: 554/5,948

6 0
3 years ago
Isabella decides to sell handmade stationery. She decides to sell 2 cards for $9. Which table below show the possible values of
kolbaska11 [484]

Answer:

B

Step-by-step explanation:

each time she sells 2 cards she gets $9 right?

so counting by 2's is the best route to go on and the only answer that displays that is answer B

5 0
3 years ago
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