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IgorLugansk [536]
4 years ago
5

Amanda’s dad is twice as old as she is today. The sum of their ages is 66. Find the ages of Amanda and her dad.

Mathematics
1 answer:
Ainat [17]4 years ago
5 0

Let amanda's age be x and her dad's age be y.

Amanda’s dad is twice as old as she,  therefore 2x=y

The sum of their ages is 66, therefore x+y=66

x+y=66

2x=y,

substitute.

2x+x=66

3x=66

Divide.

x=22.

plug it back in, 22+y=66, y=44.

Amanda's age is 22 and her dad's age is 44.

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Step-by-step explanation:

This problem on depreciation of price.

Given data

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Answer:

Step-by-step explanation:

Given

Points: (0,3) and (-4,-1)

Formula

x = 0 to find the y intercept

m = (y2 - y1)/(x2 - x1)

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y2 = 3

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zhannawk [14.2K]
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Lenght: L
Width: W

The length is 2 ft longer than the width:
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Dividing both sides of the equation by 2:
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We have a system of 2 equations and 2 unkowns:
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Using the method of substitution: Replacing L by W+2 in the second equation:
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Dividing both sides of the equation by 2:
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Answers:
What is the width?  5 ft
What is the length? 7 ft
6 0
3 years ago
X² - y² = z²<br>Express y in terms of x and z.<br>​
lord [1]

Answer:

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