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2 years ago

A washer and a dryer cost $819 combined. The washer costs $69 more than the dryer. What is the cost of the dryer?

Mathematics

1 answer:

Dennis_Churaev [7]2 years ago

4 0

Answer:

the dryer costs $450

step-by-step explanation:

w + d = 831

w = d-69 (they told us we will have to take $69 from the cost of the dryer to determine the cost of the washer)

(d-69) + d = 831

Let's combine like terms

2d - 69 = 831

add 69 to both sides to solve for d

2d = 900

divide both sides by 2 to solve for d

d = 450; the dryer costs $450

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Answer:

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Step-by-step explanation:

We know that in one class, 14 students bring lunch from home, and 20 buy lunch in the school. This will be our sample.

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The percentage of students that bring lunch from home can be estimated as the quotient between the number of students that bring lunch from home and the total number of students, times 100%.

p1 = (14/34)*100% = 41.18%

And the percentage of students that buy lunch at school can be computed in the same way:

p2= (20/34)*100% = 58.82%

Then, out of the 1700 students in middle school, we can estimate that around 58.82% of them will buy lunch in the school.

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2 years ago

10. If a triangle has an angle of 45° and an angle of 100°, what is the third angle?

katrin [286]

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

Given

See attachment for illustration

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3 years ago

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3 years ago

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3 years ago