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boyakko [2]
3 years ago
7

The sum of 5x and 2x is at least 70

Mathematics
2 answers:
blondinia [14]3 years ago
8 0
Set up an equality.
"sum," "and" means to add, and "at least" means greater than or equal to.
5x + 2x ≥ 70
7x ≥ 70
x ≥10

Remember in inequalities you solve them almost like normal equations (you can add, and subtract the same) BUT if you multiply by a negative you must flip the sign. You don't have to flip the sign in this case because there are no negatives.
Luba_88 [7]3 years ago
3 0
Sum means add
5x+2x is at least 70
is at least means <u>></u>
so it is
5x+2x<u>></u>70
(5x+2x can be combined to get 7x and 7x<u>></u>70 divide 7 get x<u>></u>10)


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3 years ago
The sales of a certain product after an initial release can be found by the equation s=10√5t+15 where s represents the total sal
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Step-by-step explanation:

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