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Nostrana [21]
3 years ago
7

Solve the system of equations using addition x+y=9 x-y=3

Mathematics
2 answers:
Semmy [17]3 years ago
8 0
(6,3) Is the answer________________
harkovskaia [24]3 years ago
4 0
I think this is correct. Hope this helps :)

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A man invests $5000 in an account that pays 8.5% interest per year, compounded quarterly
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3 years ago
Let $a$, $b$, $c$, and $d$ be distinct real numbers such that \begin{align*} a &= \sqrt{4 + \sqrt{5 + a}}, \\ b &= \sqrt
bekas [8.4K]
What is this :/ im confused
3 0
3 years ago
How do you work this out? need help asap
Svetlanka [38]
Hello,

Line 1 is passing through (-4,3), (-2,7) has a slope of (3-7)/(-4+2)=2

Line 2 is passing through (2,9), (4,1) has a slope of (9-1)/(2-4)=-4

One other way:

y=9-1/2 x²
y'=-x

gradient 1=-(-2)=2 for point (-2,7)

gradient 2=-(4)=-4 for point(4,1)



6 0
3 years ago
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