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Ivanshal [37]
3 years ago
7

Evaluate 8.1v +7.5w when v = 7 and w = 8

Mathematics
2 answers:
Sholpan [36]3 years ago
7 0

Answer:

116.7

Step-by-step explanation:

8.1v + 7.5 w

since v= 7 and w= 8

8.1(7) + 7.5(8)

= 56.7 + 60

= 116.7

12345 [234]3 years ago
4 0
8.1 times 7 equals 56.7
7.5 times 8 equals 60
When you add these two numbers together, you get 116.7. This is your answer.
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First off, we'll convert the mixed fraction to "improper" and check about, keeping in mind that, there are 5280 feet in 1mile.

\bf \stackrel{mixed}{1\frac{1}{4}~mi}\implies \cfrac{1\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{5}{4}~mi}\\\\
-------------------------------

\bf \begin{array}{ccll}
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\end{array}\implies \cfrac{5280}{f}=\cfrac{1}{\quad \frac{5}{4}\quad }\implies \cfrac{5280}{f}=\cfrac{\frac{1}{1}}{\quad \frac{5}{4}\quad }
\\\\\\
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