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saw5 [17]
3 years ago
12

5x+2y= 5 3х - у= 14 Solve

Mathematics
1 answer:
rjkz [21]3 years ago
4 0

Answer:

x = 3

y = -5

Step-by-step explanation:

5x+2y= 5    equation 1

3х - у = 14   equation 2

using equation 2 we have:

3x - 14 = y     equation 3

using equation 3 in equation 1 we have:

5x + 2(3x -14) = 5  

5x + 6x -28 = 5

11x = 5+28

11x = 33

x =33/11

x = 3

using equation 3 we have:

3(3) - 14 = y

y =9-14

y = -5

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The drawing below is of a regular pentagon. The measure for each interior angle in a regular pentagon is 108°. Angle A is supple
myrzilka [38]

Answer:

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Step-by-step explanation:

<u>The interior and exterior angles are supplementary:</u>

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2 years ago
A) A plane takes off at 50 feet below sea level and climbs 1,542 feet. At what altitude is the plant currently flying?
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Answer:

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Step-by-step explanation:

A) The equation set up for this part is 1,542-50=1,492 We know that we're subtracting 50 from 1,542 because it say that the plane starts below sea level.

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3 years ago
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Corn costs 99 cents per pound, and beans cost 45 cents per pound. If Shea buys 24 total pounds of corn and beans, and it costs $
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Shea bought 13.5 pounds of corn

c = pounds of corn
b = pounds of beans

Here’s what we know:
c(0.99) + b(0.45) = 18.09
c + b = 24

Solve the second equation for c in terms of b

c = 24-b

Substitute that expression for c in our first equation to get a numerical solution for b:

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3 years ago
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