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zhuklara [117]
2 years ago
9

Elsa bought three books at a bookstore. Here are their prices (in dollars).

Mathematics
2 answers:
nalin [4]2 years ago
7 0

Answer:

$ 40.82

Step-by-step explanation:

the sum of the three numbers is 40.82.

garri49 [273]2 years ago
7 0
The total amount Elsa spends is 40$ in total
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Rashid [163]

The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprinkler was 15 L per hour. The water output rate for the Perry family's sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 1850 L . How long was each sprinkler used

Answer:

Hours of use of sprinkler by Lewis family is 30 hours.

Hours of use of sprinkler by Perry family is 35 hours.

Step-by-step explanation:

Let W = hours of use by Lewis family

65 - W = hours of use by Perry family

Then;

15W + 40*(65 - W) = 1850

15W + 2600 - 40W = 1850

(15 - 40)W = 1850 - 2600

-25W = −750

W = 750/25 = 30

Therefore;

W = 30

65 - W = 65 - 30 = 35

Hence,

Hours of use by Lewis family is 30 hours.

Hours of use by Perry family is 35 hours.

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3 years ago
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Natalka [10]

Step-by-step explanation:

Follow PEMDAS

2 ∙ (8 + 4)

P: Parentheses

E : Exponents

M: Multiplication

D: Division

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2 \cdot \: (12) \\  = 2 \times 12 \\ 24

Question 2

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Answer:

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Step-by-step explanation:

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Jacob followed a recipe that requires 2 cups of water for ever 3 cups of flour. If he
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