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3 years ago

What is the difference between the ordered pairs

2 answers:

8 0

When an ordered pair is in a shared region it means that the ordered pair is a solution to the inequality.
If an ordered pair is on the line of an inequality, it may or may not be a solution. If the inequality is a ≤ ≥ then the point on the line will be a solution because the line is part of the solution. If the inequality is a > < then the point t on the line will not be a solution because the line is not part of the solution.

Irina18 [472]3 years ago

6 0

Order pair are the two point on xy directio and sheaded are means area below the line

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A chef made 30 donuts in 60 minutes. How long would it take him to<br> make 90 donuts?

Snowcat [4.5K]

$\bf \begin{array}{ccll} donuts&minutes\\ \cline{1-2} 30&60\\ 90&x \end{array}\implies \cfrac{30}{90}=\cfrac{60}{x}\implies \cfrac{1}{3}=\cfrac{60}{x}\implies x=180$

6 0

2 years ago

Read 2 more answers

A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua

frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a) $y = a+bx$

$b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} = \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300$

$a=y-bx = 47200-(15300 \times 29) = 2830$

So, slope = 15300

Intercept = 2830

So, equation : $y = 2830+15300x$

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

$y = 2830+15300 \times 3.3 = 53320$

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = $r^2 = (0.72)^2 =0.5184$

8 0

2 years ago

Find the product of 4.42 and 3.9

Damm [24]

Answer:

17.238

Step-by-step explanation:

The product is just the result once multiplying, so 4.42 multiplied by 3.9 is 17.238.

6 0

2 years ago

Read 2 more answers

Solve for w 3w-3+4=1-5w

defon

The answer to your question is 0.

6 0

2 years ago

the sum of the digits of a two digit number is 10. if the digits are reversed, the new number will be 18 more than the original

bearhunter [10]

<span>t+u = 10
10u+t= 10t+u-54
Rearrange:
t+u=10
9t-9u=54
Simplify:

1st; t+u=10
2nd: t-u=6
Add 1st and 2nd and solve for t,as follows:
2t = 16
t = 8
Substitute in t+u=10 to solve for u:
8+u=10
u = 2
Original Number = 82</span>

3 0

2 years ago