30valgolden

20.08.2019 • 

Mathematics

Susan's math teacher assigned x homework problems on monday. on tuesday, she assigned 13 more problems. over the two days, a total of 21 homework problems were assigned. which equation could be used to find x, the number of problems assigned on monday?
a.x - 13 = 21
b.x + 13 = 21
c.21 + x = 13
d.13x = 21

Ответ:

lam21

31.12.2021

Mathematics

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X+(x+13)=21
2x+13=21

as "x" is the number of homework assigned on Monday add that to "x+13", as she assigned the amount she assigned on Monday PLUS 13, and you should get 21

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Ответ:

keke6361

07.12.2021

Mathematics

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(10w+120)+(45w+25) perhaps

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