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Mamont248 [21]
3 years ago
12

Ezra works two summer jobs to save for a laptop that costs at least $1100. He decides to adjust his rates to $250 per lawn (x) f

or the summer and $300 per dog (y) for the summer, and to limit himself to 2 dogs.
Describe how to find a solution graphically.
Mathematics
2 answers:
jeyben [28]3 years ago
8 0

Answer:

Graph in the first quadrant because x and y are nonnegative.

Shade the half-plane that does not include the origin since (0, 0) does not satisfy the inequality.

Draw a horizontal line at y = 2 for 2 dogs.

Solutions lie on or below the part of the horizontal line that is in the shaded region.

Step-by-step explanation:

Doss [256]3 years ago
7 0

Ezra can walk two dogs and mow two or more lawns for the summer to make at least enough money to pay for the laptop.

Hope this helps!

<em>(also tbh that'd have to be an insane laptop :v)</em>

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7(8+2) = 7(8)+7(2). This is a example of the ______ property of multiplication
ryzh [129]

Answer:

Distributive

Step-by-step explanation:

In any problem with a form of A(b+c) you are distributing the A to both b and c

As you can see in your example, you are distributing the 7 to both the 8 and the two

If you were to solve this problem the final answer would be 70

The property is Distributive

6 0
3 years ago
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In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The followi
Naddika [18.5K]

Answer:

112

Step-by-step explanation:

Given that in a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35.

Age 18: average score = 100, SD = 15

Age 35: average score = 100, SD = 15, r = 0.80

Let us obtain regression equation of y on x.

Let y be the scores at age 35 and x at age 18

Slope = r(s_y/s_x) = 0.8(\frac{15}{15} )=0.80

The line passes through (100,100) being average of x and y

Hence regression line would be

y-100=0.8(x-100)\\y = 0.8x+20

a) Here given that x =115

Hence y=0.80(115)+20\\=112

the average score at age 35 for all the individuals who scored 115 at age 18, would be 112.

b) Prediction also would be the same 112.

5 0
3 years ago
Which of the following are solutions to the question below? Check all that apply.
AveGali [126]

Answer:

D

Step-by-step explanation:

Given

6x² - 2x + 36 = 5x² + 10x ( subtract 5x² + 10x from both sides )

x² - 12x + 36 = 0 ← in standard form

(x - 6)² = 0 ← in factored form, thus

x - 6 = 0 ⇒ x = 6 → D

7 0
3 years ago
Solve the equation: 5x -5
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Answer: 5(x-1)

Step-by-step explanation:

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14+-86=-72. That is the change in level if you needed it.
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