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sammy [17]
2 years ago
8

Solve..........20 = 5x + 10y

Mathematics
1 answer:
kvv77 [185]2 years ago
6 0

5x + 10y = 20

-5x + 20 = 10y

-x/2 + 2 = y

y = 2 - x/2

20 - 10y = 5x

4 - 2y = x

x = -2y + 4

Answer:

x = -2y + 4

y = 2 - x/2

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Step-by-step explanation:

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At age 16, Estelle weighed 110lbs.
Cloud [144]

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}

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m=3.6

Therefore the slope is 3.6 lbs per year.

7 0
3 years ago
Please help I don't undestand
Alla [95]

By applying the law of sines and some algebraic handling, the length of the side LJ is approximately equal to 3.517 units. (Right choice: D)

<h3>What is the missing side of the triangle according to the law of sines?</h3>

The law of sines presents a relationship between sides and <em>opposite</em> angles, which is described below:

9/sin 89° = LJ/sin 23°     (1)

LJ = 9 × sin 23°/sin 89°

LJ ≈ 3.517

By applying the law of sines and some algebraic handling, the length of the side LJ is approximately equal to 3.517 units. (Right choice: D)

To learn more on law of sines: brainly.com/question/21634338

#SPJ1

3 0
2 years ago
What's the x plz help
slavikrds [6]

Answer:

The answer for x is ten

5 0
3 years ago
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