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Work out the value of 2x + 8y when x = 7 and y = -4
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Feb 20, 2023
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Work out the value of 2x + 8y
when x = 7 and y = -4
Mathematics
high-school
Nirav Joshi
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Nirav Joshi
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Answer: -18
Explanation:
Substitute X and Y
2(7)+8(-4)
2 times 7= 14
8 times -4= -32
Add 14 and -32 together
Get -18
RGRGRG
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Feb 23, 2023
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RGRGRG
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Plug in 7 for x and -4 for y…
2(7)+8(-4)=14+(-32)= -18
Answer: -18
Paul Dove
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Feb 27, 2023
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Paul Dove
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