All categories

3 years ago

Which out of these 2 "graphs" represent a proportional relationship? PLEASE HELP

2 answers:

8 0

The bottom one since as x increases so does y. the top function doesn't since it's a quadratic. meaning it decreases and hen increases

Snezhnost [94]3 years ago

7 0

I believe the second option, (-2.2)-(3,7), is proportional because it increases up one over one everytime if you draw it.

You might be interested in

Please Help and please show work.

vampirchik [111]

Answer:

17 ft

Step-by-step explanation:

2.5 / 8.5 = 5/p cross multiply

2.5 p = 42.5 divide both sides by 2.5

3 0

3 years ago

the Wall Street Journal reported that automobile crashes cost United States $162 billion annually. The average cost per person f

Tanya [424]

Answer:

a) Margin of error = 166.311

b) sample size ≥ 62

Step-by-step explanation:

Given:

Average cost = $1599

Sample size = 50 persons

Standard deviation = $600

Confidence level is 95%

a) Margin of error = $z\frac{\sigma}{\sqrt{n}}$

Now for confidence level of 95% z-value = 1.96

Thus,

Margin of error = $1.96\frac{600}{\sqrt{50}}$

Margin of error = 166.311

b) For Margin of error ≤ 150

$z\frac{\sigma}{\sqrt{n}}$ ≤ 150

$1.96\frac{600}{\sqrt{n}}$ ≤ 150

$1.96\frac{600}{150}$ ≤ √n

√n ≥ 7.84

n ≥ 61.4656

Therefore,

sample size ≥ 62

6 0

3 years ago

In the year 2003 a company made 8.8 million in profits. For each consecutive year after that their profits increased by 6%. How

yaroslaw [1]

Answer:

The company's profit in 2007 was 11.088 millions

Step-by-step explanation:

This is a compound interest problem where the initial amount is 8.8 million, the interest rate is 6% and the time period is 4 years and it gets compounded yearly. So we can use the compound interest formula, that is given by:

A = P*(1 + r/n)^(n*t)

Where A is the final amount, P is the initial amount, r is the rate, t is the total amount of time and n is the number of times it gets compounded in one year. We can now use all the values that were given to us to find out the profit of the company.

A = 8.8*(1 + (0.06))^(4) = 8.8*(1.06)^16

A = 8.8*1.26 = 11.088 millions

So the company's profit in 2007 was 11.088 millions

6 0

3 years ago

A is a finite non-empty set. The domain for relation R is the power set of A.(Recall that the power set of A is the set of all s

siniylev [52]

Answer:

The answer is "Choice D"

Step-by-step explanation:

Determining the information:

For " $X \subseteq A$ " and " $Y \subseteq A$ ", $X$ relates to $Y$ when $X$ and $Y$ has the same cardinality. therefore, R does not have reflective: