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dolphi86 [110]
3 years ago
7

Find the value of 9u +4 given that 7u-4=3.

Mathematics
2 answers:
xenn [34]3 years ago
6 0

Answer:

13

Step-by-step explanation:

Given

7u - 4 = 3 ( add 4 to both sides )

7u = 7 ( divide both sides by 7 )

u = 1

Then

9u + 4 = 9(1) + 4 = 9 + 4 = 13

lesya [120]3 years ago
6 0

Answer:

7u - 4 = 3 \\ 7u = 4 + 3 \\ 7u = 7 \\ u =  \frac{7}{7}  \\  \boxed{u = 1} \\\\f(u) =  9u + 4 \\ f(1)  = 9(1) + 4 \\f(1)  = 9 + 4  \\ \boxed{f(1) = 13 }

  • <u>13</u> is the right answer.
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