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Lady bird [3.3K]
3 years ago
15

2x-y=-11 Y=-2x-13 Solve by using elimination

Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

x = -6 ; y = -1

Step-by-step explanation:

2 x - y = - 11   .........equ No 1

- 2 x - y =  13 .........equ No 2

Adding equ  No. 1 and equ No. 2

- 2 y  = 2

∴ y = - 1

substituting y = -1 in equ no 1

2 x - ( -1) = -11

2 x + 1 = - 11

2 x = -11 - 1

2 x = -12

∴ x = -6

x = -6 ; y = -1

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Answer:

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To make a unitless ratio, both parts must have the same units. Here, we chose to express the lengths in inches. We could have used feet or yards as well. (2/3 ft)×(1 yard)/(3 ft) = 2/9 yd or (1/2 yd)(3 ft/yd) = 3/2 ft. You get the same ratio with any of these:

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djverab [1.8K]

Answer:

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Step-by-step explanation:

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