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MrRa [10]
3 years ago
5

The finance department at a regional toy company has been tracking the income and costs of a new line of dolls. They have determ

ined that the income and costs can be modeled by the equations below, where x is the number of dolls sold, in hundreds, and y is the total dollar amount, in thousands.
Income: y=-0.4x^2+3x+45

Costs:y=1.5x+20


Consider the system of equations that can be used to determine the number of dolls for which the company will break-even.



How many total possible solutions of the form (x,y) are there for this situation?


Of any possible solutions of the form (x,y), how many are viable for this situation?
Mathematics
1 answer:
romanna [79]3 years ago
3 0

Answer:

q#1 Option B.2 possible solution is correct option

Q#2 option c. 1 viable solution is correct option.

Step-by-step explanation:

Q#1

y=4+3x+45

as this is a quadratic solution

and we know that when we solve a quadratic equation then  it gives two possible solutions

hence option b is the correct option

Q#2

option c is correct option when we solve an quadratic equation it gives two solution one is positive and other is negative as we know that income cannot be negative

hence only one viable solution exists when we solve this

y=4+3x+45 quadratic equation

Read more on Brainly.com - brainly.com/question/9837160#readmore

Step-by-step explanation:

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katen-ka-za [31]

Answer:

a) (0.806, 0.852)

b)Margin of error ≤ 0.01

1.96*√{0.5*(1–0.5)/n} ≤ 0.01

√n ≥ 98

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• Smallest sample size = 9604

Step-by-step explanation:

I found this on Chegg

7 0
2 years ago
A county in North Carolina spans 532 square miles. The population density of deer in the county is 11 deer per square mile. How
Ghella [55]
The answer is 5,852 deer.

The density is 11 deer per 1 square mile. The question is how many deer are per 532 square miles:
11 deer / 1 square mile = x / 532 square miles

x = 532 square miles * 11 deer / 1 square mile
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Therefore, there are 5,852 deer in the county.
4 0
2 years ago
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Evaluate. (w^2/x -3) ÷10 × z when w= -4, x = 0.8, and z = -4/5 Enter your answer as a simplified mixed number in the box.​
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Answer:

-1.36

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6 0
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Carey and Patrick both borrowed money from Melinda. Carey owes Melinda $25.00. Patrick owes Melinda 3/4 the amount that Carey ow
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serg [7]
1. Check the tree diagram in the picture attached.

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    The red segment represents "not on time"


3. blue - blue - red represents the case 1st on time, 2nd on time, 3rd not on time.

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