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Dafna11 [192]
3 years ago
12

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 12 and 16 years old. I

f the average age of the children is 15.25 , how old is the youngest child?
Mathematics
1 answer:
Vladimir [108]3 years ago
6 0
Four children average is 15.25 so ages must add to 61
61-12-16=33
11 and 22 go into 33
Youngest is 11
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Danielle plans to graph the linear equation 5x-2y=10 by plotting the x-intercept and y-intercept.
lesya692 [45]

x-intercept is (2,0)

y-intercept is (0,-5)

Step-by-step explanation:

Danielle plans to graph the linear equation 5x-2y=10 by plotting the x-intercept and y-intercept.

Finding x-intercept

X-intercept: Substitute 0 for y and then solve for x. Write your answer in the form (__, 0)

Putting y=0

5x-2y=10\\5x-2(0)=10\\5x=10\\x=10/5\\x=2

So, x-intercept is (2,0)

Finding y-intercept

Y-intercept: Substitute 0 for x and then solve for y. Write your answer in the form (0, __)

Putting x=0

5x-2y=10\\5(0)-2y=10\\-2y=10\\y=10/-2\\y=-5

So, y-intercept is (0,-5)

Keywords: Solving Equations

Learn more about solving equations at:

  • brainly.com/question/1563227
  • brainly.com/question/2403985
  • brainly.com/question/11229113

#learnwithBrainly

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Step-by-step explanation:

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