2 years ago

According to the graph......

Mathematics

1 answer:

Fantom [35]2 years ago

4 0

D because 0.4/x= y :)

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Use 425 x 79 = 33575 to work out 425 x 7.9

tester [92]

$Answer: \\ 425 \times 7.9 = 425 \times 79 \div 10 = 33575 \div 10 = 3357.5$

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3 years ago

If U=pi(r+h),find r when U=16 1/2 and h=2<br> solve this question by take the value of pi 22/7

I am Lyosha [343]

$U=\pi (r+h) \\\\ 16 \frac{1}{2}= \frac{22}{7}\cdot (r+2) \\\\ \frac{33}{2} : \frac{22}{7}=r+2 \\\\ \frac{\not 33}{2}\cdot \frac{7}{\not 22}=r+2 \\\\ \frac{3}{2} \cdot \frac{7}{2}=r+2 \\\\ \frac{21}{4}=r^{(4}+2^{(4} \\\\ 21=4r+8 \\\\ 4r=21-8 \\\\ 4r=13 \\\\ \boxed{r=\frac{13}{4}}$