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stealth61 [152]
3 years ago
14

Question 9 of 10

Mathematics
1 answer:
ioda3 years ago
6 0

Answer:

If she invests x an y, then we have

x+y = 144800

.10x + .18y = 20000

Now just do that as a matrix equation.

Step-by-step explanation:

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Feliz [49]

Answer:

The researcher should use correlation analysis for his studies.

Step-by-step explanation:

What is correlation?

Correlation is a statistical tool used to quantify the degree to which two variables are related. Through the correlation analysis, you evaluate correlation coefficient that tells you how much one variable changes when the other one does. Correlation analysis provides you with a linear relationship between two.

Types of correlation

1. Positive, Negative or Zero Correlation:

2. Linear or Curvilinear Correlation:

3. Scatter Diagram Method:

4. Pearson's Product Moment

Coefficient of Correlation:

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8 0
3 years ago
Read 2 more answers
The admision fee at a basket ball game is 350$ for children and 750$ for adults. On a certain night,1500 people enter the basket
Hoochie [10]

<u>Note: The only way to solve this problem is by adjusting the fees to $3.50 and $7.50.</u>

Answer:

<em>1300 children attended the basketball game</em>

Step-by-step explanation:

System of Equations

Let's call:

x = number of children attending the basketball game

y = number of adults attending the basketball game

On a certain night, 1500 people enter the game, thus:

x + y = 1500           [1]

Since each admission fee for children cost $3.50 and $7.50 for adults and it was collected $6050, thus:

3.50x + 7.50y = 6050            [2]

From [1]:

y = 1500 - x

Substituting in [2]:

3.50x + 7.50(1500 - x) = 6050

Operating:

3.50x +  11250 - 7.50 = 6050

-4x = 6050 - 11250

Solving:

x = 1300

1300 children attended the basketball game

5 0
3 years ago
There are 32 sixth graders and 44 seventh graders in the video gaming club. Which ratio is the greatest?
katrin [286]
I’m gonna say D hope this helps
3 0
3 years ago
Find the simple interest paid to the nearest cent for each principal, interest rate, and time. $570, 2%, 4 years
Tema [17]

Answer:

570 of 2% 4years

570×2÷100 4years

11.5 × 4÷12

3.8..

4 0
3 years ago
Factor completely 50 a^2 b^5 - 35 a^4 b^3 + 5 a^3 b^4
maw [93]

Answer:

5a^2b^3(-7a^2+ab+10b^2)

Step-by-step explanation:

Factor 50 a^2 b^5 - 35 a^4 b^3 + 5 a^3 b^4

−35a^4b^3+5a^3b^4+50a^2b^5

=5a^2b^3(-7a^2+ab+10b^2)

3 0
3 years ago
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