Number 7 please! I need help badly
1 answer:
Answer:
A computer costs $225 and a printer $150.
Step-by-step explanation:
Let c be the cost of a computer and p the cost of a printer, then:
3c + p = 825
4c + 2p = 1200
Multiply the first equation by -2:
-6c - 2p = -1650
Add this to the second equation:
-2c = -450
c = 225.
Now substitute c = 225 in the first equation:
3*225 + p = 825
p = 825 - 675 = 150.
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A,B, and C
Step-by-step explanation:
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Answer:
6.4008
Step-by-step explanation:
sin 45 = opp/hyp
sin 45 = 4 / y
y = 4/sin 45
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tan 45 =opp/adj
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1 = 4/(x-3)
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B
I'm not 100% sure this is right but I think this is how you do it
