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Taya2010 [7]
2 years ago
15

Lee will buy 3 notebooks for $1.29 each, 2 dozen pencils at $3.45 a dozen, and a box of pens for $14.85 a box. How much will Lee

spend on his school supplies? *
Mathematics
1 answer:
Finger [1]2 years ago
7 0

Answer:

$25.62 on school supplies

Step-by-step explanation:

Solve the equation (1.29*3) + (3.45*2) + 14.85

1: Solve 1.29*3 to get 3.87

2: Solve 3.45*2 to get 6.90

3: Add the numbers 3.87, 6.90, and 14.85 together to get 25.62

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Travka [436]

Answer:

This problem is incomplete, we do not know the fraction of the students that have a dog and also have a cat. Suppose we write the problem as:

"In Mrs.Hu's classroom, 4/5 of the students have a dog as a pet. X of the students who have a dog as a pet also have cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?"

Where X must be a positive number smaller than one, now we can solve it:

we know that in the class we have 45 students, and 4/5 of those students have dogs, so the number of students that have a dog as a pet is:

N = 45*(4/5) = 36

And we know that X of those 36 students also have a cat, so the number of students that have a dog and a cat is:

M = 36*X

now, we do not have, suppose that the value of X is 1/2 ("1/2 of the students who have a dog also have a cat")

M = 36*(1/2) = 18

So you can replace the value of X in the equation and find the number of students that have a dog and a cat as pets.

5 0
3 years ago
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What is the volume of a rectangle prism that has a length of 2cm width of 3cm and a height of 5cm
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Answer:

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Step-by-step explanation:

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How much money do winners go home with from the television quiz show Jeopardy? To determine an answer, a random sample of winner
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Step-by-step explanation:

Given:

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