heyitsjustjada heyitsjustjada

26-05-2024
Mathematics

Answered

Which equation is true? r(10 – r) = 10 r + (10 – r) = 4 + 3 4r[3(10 – r)] = 37 4r + 3(10 – r) = 37

Answer :

mathstudent55 mathstudent55

26-05-2024

Answer:

See below.

Step-by-step explanation:

r(10 – r) = 10

10r - r² = 10

True for some values of r.

r + (10 – r) = 4 + 3

10 = 7

False.

4r[3(10 – r)] = 37

120r - 12r² = 37

True for some values of r.

4r + 3(10 – r) = 37

r + 30 = 37

True for r = 7.

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