3 years ago

Eliza and her mother have a combined age of 51 years. If her mother is 39 years old , how old is Eliza?

Mathematics

1 answer:

Paul [167]3 years ago

7 0

Answer: 12 years old

Step-by-step explanation:

Take 51 and 39 and subtract them.

51-39=12

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Answer:

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Find a pair of polar coordinates for the point with rectangular coordinates (5, –5).

Elanso [62]

Answer:

(5*sqrt(2), 5pi/4)

Step-by-step explanation:

In Polar coordinates, tan(theta)=y/x and r=sqrt(x^2+y^2)

tan(theta)=-5/5=-1. Theta=5pi/4

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Hence the Polar coordinate is (5*sqrt(2), 5pi/4)

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3 years ago

Larry and Donna bought a sofa at the sale price of $1,344. The original price of the sofa was $1,920. Find the discount rate

velikii [3]

Answer:

30% discount

Step-by-step explanation:

To find the percent discount write a proportion.

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1344(100) = 1920(x)

134400 = 1920x

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This means you pay 70% of the price. The discount was 30%.

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