$3\dfrac{1}{7}+2\dfrac{1}{2}=3\dfrac{1\cdot2}{7\cdot2}+2\dfrac{1\cdot7}{2\cdot7}=3\dfrac{2}{14}+2\dfrac{7}{14}=(3+2)+\dfrac{2+7}{14}=\boxed{5\frac{9}{14}}$

8 0

4 years ago

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Find the area of the triangle.

Alika [10]

Answer:15 or 30

Step-by-step explanation:

8 0

3 years ago

Find the sum of the first 20 terms

Dennis_Churaev [7]

Answer:20.5

Step-by-step explanation:

1.5+1.45+1.40+1.35+1.30+1.25+1.20+1.15+1.10+1.05+1.00+0.95+0.90+0.85+0.80+0.75+0.70+0.65+0.60+0.55=20.5

7 0

3 years ago

Solve for x. A) 10 C) 11 B) - 7 D) 12

san4es73 [151]

Answer:

i think it is A) 10

Step-by-step explanation:

8 0

3 years ago

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