All categories

3 years ago

Help me!

Mathematics

1 answer:

Zigmanuir [339]3 years ago

4 0

gAnswer:

x represnts the number of t-shirts and y represents the price

x = 1 y = 9

x = 2 y = 16

x = 3 y = 24

etc.

Step-by-step explanation:

This is not propational relationship because if it was putten on a graph it would not make a striaght line. The quantities do not have a propational relationship because for it can be a propational relationship you have to divide or multiply, you have to have a striaght line, and it has to go through the origin (0,0)

You might be interested in

Can you please help me this is coordinates only and thank you.

nataly862011 [7]

Answer: (2,6)

Step-by-step explanation: you go the the left 3 from F then up 2 and you have it.

3 0

3 years ago

Five hundred eleven (511) homes in a certain southern California community are randomly surveyed to determine if they meet minim

allsm [11]

Answer:

The confidence interval at the 90% confidence level for the true population proportion of southern California community homes meeting at least the minimum recommendations for earthquake preparedness is (0.3136, 0.3830).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

511 homes were surveyed, of which 178 met the minimum recommendations for earthquake preparedness. This means that $n = 511$ and $p = \frac{178}{511} = 0.3483$ .

Find the confidence interval at the 90% confidence level for the true population proportion of southern California community homes meeting at least the minimum recommendations for earthquake preparedness.

So $\alpha = 0.10$ , z is the value of Z that has a pvalue of $1 - \frac{0.10}{2} = 0.95$ , so $z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3483 - 1.645\sqrt{\frac{0.3483*0.6517}{511}} = 0.3136$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3483 + 1.645\sqrt{\frac{0.3483*0.6517}{511}} = 0.3830$

6 0

2 years ago

How can you get 3 1/2x alone on the left side of the equation 3 1/2x + 215 = 495? What is the resulting equation.

Naya [18.7K]

Subtract 215 to get 3 1/2x = 280 then X=80

5 0

3 years ago

Read 2 more answers

Marie and Jorge are both trying to lose weight. After 3 months they compared their weight loss. Marie's weight went from 175 to

LuckyWell [14K]

Answer:

1 ,2, and 3

Step-by-step explanation:

Jorge's weight percent decrease is (190-180)÷190, or amount of change/original amount. Simplified, 10÷190=5.2637157894...%, approximately equal to 5%. The first option is correct. Marie's percent decrease is (175-150)÷175. Simplified, that is 25÷175=14.2857142857...%, which is about 14%. The second option is correct. Clearly, we can tell that Marie had the greater percent change, about 14% to about 5%. Also clearly, Jorge did not have the greater percent change, so we can tell Option 4 is wrong. We already know that Jorge's change is about 5% and Marie's is about 14%, so they can't be about 0.5% or about 1.4%. Options 5 and 6 are incorrect. The correct answers are 1, 2, and 3.

Hope this helps and it's not too long! (P.S. I got it right on Edgen.)

6 0

3 years ago

Read 2 more answers

PLEASE HELP!!!

Bingel [31]

Answer:

If angle ABE = 48°,then angke DBC = 43° .

Step-by-step explanation:

Since, ∠ABE = 43 °

∠DBC = 43 ° .. ( Vertically opposite angles)

3 0

2 years ago