Answer: y = -1 and x = 3
Step-by-step explanation:
x=-2y+6
3x-4y = 28
There are two ways to solve this: 1) solve directly with the equations, and 2) graph the line and look for the intersection.
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Use the definition of x from the first equation and substitute it in the second:
3x-4y = 28
3(-2y+6)-4y = 28
-6y + 18 -4y = 28
-10y = 10
y = - 1
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Graph the two lines and find the value of y at the point they intersect. See the attachment.
y = -1 at x= 8
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For the second question:
y=3x-10
4x+5y=7
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4x+5y=7
4x+5(3x-10)=7
4x+15x-50=7
19x = 57
x = 3
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Answer:
the length is 84 ft
Step-by-step explanation:
65*2= 130
298-130=168
168/2=84
84+84+65+65=298 ft
The sample which is likely to produce the most valid result is Richard's sample because there was no statistical bias. Statistical bias is the systematic favoritism of certain individuals in the study. Just like what Adriana, Henry and Malik did in conducting their surveys, they choose people who are point of interest and also who are near them. In the way Richard conducted his survey, he used a random sampling technique, this is a method of selecting a sample from a population in such a way that every possible individual can be chosen and he doesn't know who these people are.
The answer is 8/10. If you multiply it by two (top and bottom) then you will get 8/10.
Answer:
jazzmyn
Step-by-step explanation:
it is not a function because there are repeat x values. 3 shows up in two different coordinates as the x value.