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2 years ago

At age 16, Estelle weighed 110lbs.

Mathematics

1 answer:

Cloud [144]2 years ago

7 0

Answer:

Her weight is increase by 18 lbs over past five years and the slope is 3.6 lbs per year.

Step-by-step explanation:

Given information: Estelle weight is

At age 16 = 110 lbs

At age 21 = 128 ibs

Increase in her weight over the past 5 years is the difference of weight at age 21 and at age 16.

Increase in her weight over the past 5 years = 128 - 110 = 18

Her weight is increase by 18 lbs over past five years.

Let x=age and y=weight, then the weight function passes through the points (16,110) and (21,128).

If a line passes through two points $(x_1,y_1)$ and $(x_2,y_2)$ , then the slope of the line is

$m=\frac{y_2-y_1}{x_2-x_1}$

Using the above formula we get

$m=\frac{128-110}{21-16}$

$m=\frac{18}{5}$

$m=3.6$

Therefore the slope is 3.6 lbs per year.

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3 years ago

Nichole needs to spend at least four hours each week practicing the guitar

zhannawk [14.2K]

Answer:

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Step-by-step explanation:

From the information given:

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2 years ago

The length of a rectangle is 5 inches less than 3 times the width. The perimeter is 70 inches. Find the length and the width.

Stolb23 [73]

Answer:

Length of the Rectangle = 10 inches

and Width = 25 inches

Step-by-step explanation:

Let the width of the rectangle = k inches

So, the Length of the rectangle = (3k - 5) inches

Perimeter = 70 inches

Now, Perimeter of the Rectangle = 2(Length + Width)

= 2 (k + (3k-5))

⇒ 2 (k + (3k-5)) = 70

or, 2(k + 3k -5) = 70 ⇒ 2(4k - 5) = 70

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