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Work out the value of; 3x + 2y when x = 5 and y = -4
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Work out the value of; 3x + 2y when x = 5 and y = -4
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Oct 12, 2018
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Work out the value of; 3x + 2y when x = 5 and y = -4
Mathematics
high-school
ZK Zhao
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ZK Zhao
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3x5=15 2x-4=-8 -8+15=7
Sachy
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Oct 13, 2018
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Sachy
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All you have to do is plug the numbers in so -
3(5) + 2(-4)
So 3 * 5 is 15,
15 + 2(-4)
and 2 * -4 is -8.
So 15 + -8 = 7.
So your answer would be 7 :)
Tersmitten
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Oct 17, 2018
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Tersmitten
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