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3 years ago

Can you guys help me? :-(

Mathematics

2 answers:

Yuliya22 [10]3 years ago

8 0

Answer:

2/5 + 5/10 = 9/10

Step-by-step explanation:

Turn 2/5 into 4/10 to make the two fractions' denominators the same by multiplying 2 × 2 =4 and 5 × 2 = 10. Then add 4/10 + 5/10 to get 9/10.

VMariaS [17]3 years ago

5 0

Answer:

$\frac{9}{10}$

Step-by-step explanation:

Find the LCD because like last time, you cannot add or subtract fractions with different denominators.

LCD = 10

Since the second fractions stayed at the same denominator, you will only have to multiply the first fraction.

$\frac{2 * 2}{5 * 2}$

$\frac{4}{10}$

$\frac{4 + 5}{10}$

$= \frac{9}{10}$

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3 years ago

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3 years ago

How do you verify this trigonometric identity? cos^2 θcot^2 θ = cot^2 θ - cos^2 θ

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3 years ago