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Mashcka [7]
2 years ago
11

1) Bob weighed 200 lbs, but after dieting for 6 months, he weighed 170 lbs.

Mathematics
1 answer:
aivan3 [116]2 years ago
7 0

Answer: 15%

Step-by-step explanation:

The Percentage decrease will be:

= Decrease in weight / Old weight × 100

= (200 - 170) / 200 × 100

= 30/200 × 100

= 15%

The Percentage decrease is 15%

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Simplify the complex fraction.
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Given:

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To find:

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Step 2: Simplify the denominator

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Step 3: Using step 1 and step 2

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Step 4: Using fraction rule:

$\frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a \cdot d}{b \cdot c}

$\frac{\left(\frac{64 r^{3}}{15 t^{4}}\right)}{\left(\frac{16 r}{9 t^{2}}\right)}=\frac{64r^3 \cdot 9t^2}{16 r \cdot 15 t^4}

Cancel the common factor r and t², we get

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Cancel the common factors 16 and 3 on both numerator and denominator.

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The simplified fraction is \frac{12 r^{2}  }{  5 t^2 }.

5 0
3 years ago
If x+y=10 and x-y =6 what is the answer of x cube - y cube fast​
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Answer:

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