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patriot [66]
2 years ago
15

Systems of equations pls help!

Mathematics
1 answer:
timama [110]2 years ago
8 0
Equation 1 + equation 2

3x-8y +(-3x+10y) = 9+(-15)
2y= -6
then y=-3

from equation 1
3x-8y=9
3x-8(-3)=9
3x+24=9
3x=9-24=-15
then x=-5
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Step-by-step explanation:

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There are 29 pencils in a basket. 7 of these pencils are green. The rest of them are yellow.
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Step-by-step explanation:

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3 years ago
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The mean of 100 observation is found to be 40. If at the time of compution two items were wrongly taken as 30 and 27 instead of
Colt1911 [192]

Answer:

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Step-by-step explanation:

According to this question, the mean of 100 observation is found to be 40. This means that the number of values in the set of data is 100. However, at the time of computation two items were wrongly taken as 30 and 27 instead of 3 and 72.

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2 years ago
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Can I be brainliest? TYSM

8 0
2 years ago
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