4 years ago

Evaluate each expression 3/4+2/5

Mathematics

2 answers:

Norma-Jean [14]4 years ago

7 0

Answer: 3/4 ×5 + 2/5 ×4

15/20 + 8/20 = 23/20 = 1 3/20 or 1.15

Step-by-step explanation:

Evgen [1.6K]4 years ago

3 0

Answer: 1 and 3/20

Step-by-step explanation:

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Oksi-84 [34.3K]

Answer:

2/6 of the book

Step-by-step explanation:

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3 years ago

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Sam bought a teddy bear for $3.75 and a stuffed unicorn for $7.50. He gave the cashier $20. How much change did he receive? *

kenny6666 [7]

Answer:

3.75+7.5 = 11.25

20 dollars in total how much change.

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2 years ago

Use the formula to evaluate the series 1/4 + 1/9 + 1/27 + 1/81.

Dmitriy789 [7]

Is the first term supposed to be 1/4, or did you actually mean 1/3?

I'll assume the latter. Write

$S=\dfrac13+\dfrac19+\dfrac1{27}+\dfrac1{81}$
$S=\dfrac13+\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}$
$\dfrac13S=\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}+\dfrac1{3^5}$
$\implies S-\dfrac13S=\dfrac13-\dfrac1{3^5}$
$\dfrac23S=\dfrac13\left(1-\dfrac1{3^4}\right)$
$S=\dfrac12\left(1-\dfrac1{81}\right)$
$S=\dfrac{40}{81}$

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3 years ago

Thad attempted 25 free throws and made 17 of them while Amy attempted 30 and made 20. Who shot the higher percentage?

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Answer: Thad-1.471

Amy-1.500

SO AMY SHOT WITH A HIGHER PERCENTAGE

Step-by-step explanation: brainliest would be appreciated

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2 years ago

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