Ask question

Ask question

All categories

1 year ago

9

Which of the exponential growth functions has a multiplicative rate of change of 4? 2 f(x) X x f(x) 1 f(x) - 1 NT -1 -1 2 1 4 8

0 0 1 0 1 1 2 1 8 1 4 2 4 2 64 2 16

1 answer:

tester [92]1 year ago

7 0

Expondential growth is

You might be interested in

A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only

Nadusha1986 [10]

Answer:

The sample size required is, <em>n</em> = 502.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p\cdot (1-\hat p)}{n}}$

The margin of error is:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p\ \cdot (1-\hat p)}{n}}$

Assume that 50% of the people would support this political candidate.

The margin of error is, MOE = 0.05.

The critical value of <em>z</em> for 97.5% confidence level is:

<em>z</em> = 2.24

Compute the sample size as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p\ \cdot (1-\hat p)}{n}}$

$n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)}}{MOE}]^{2}$

$=[\frac{2.24\times \sqrt{0.50(1-0.50)}}{0.05}]^{2}\\\\=501.76\\\\\approx 502$

Thus, the sample size required is, <em>n</em> = 502.

4 0

3 years ago

One solution of the equation x2 + 5x + 4 is -4. What is the other solution?

Oliga [24]

Answer:

<h2>x = -1</h2>

Step-by-step explanation:

$x^2+5x+4=0\\\\x^2+x+4x+4=0\\\\x(x+1)+4(x+1)=0\\\\(x+1)(x+4)=0\iff x+1=0\ \vee\ x+4=0\\\\x=-1\ \vee\ x=-4$

7 0

3 years ago

An average of 20 pears were sold from Monday to Friday. After the sales on Saturday and Sunday, the average pears sold per day w

Fittoniya [83]

Answer:

5 pears

Step-by-step explanation:

Given that

The average of 20 pears were sold from Monday to Friday

But after the sales on Saturday and Sunday, the average pears sold per day were increased to 25

We need to determine the number of pears sold on Saturday and sunday

So, it is

= 25 pears - 20 pears

= 5 pears

4 0

2 years ago

7m-7-6m-16=1+4m please help

Mrrafil [7]

Make sure you put similar numbers (those with "m" and those without in this case) on one side and the others on the other side (also when you change, change the signs for each one moved to the opposite)

7m -4m - 6m = 7+1+16

- 3 m = 24
-3m/ -3 = 24/-3 (what you do to one side, you do to the other)

m = -8 (answer)

hope this helps

7 0

3 years ago

Read 2 more answers

Leah has a 22 ounce coffee. she drinks 7 ounces. enter the percentage of ounces Leah has left of her coffee. round your answer t

Mademuasel [1]

Answer:

The percentage of ounces Leah has left of her coffee is 68.18%.

Step-by-step explanation:

The decrease percentage is computed using the formula:

$\text{Decrease}\%=\frac{\text{Original amount - Decrease}}{\text{Original amount}}\times 100$

It is provided that Leah originally had 22 ounce coffee.

Then she drinks 7 ounces of coffee.

Decrease = 7 ounces

Original = 22 ounces

Compute the percentage of ounces Leah has left of her coffee as follows:

$\text{Decrease}\%=\frac{\text{Original amount - Decrease}}{\text{Original amount}}\times 100$

$=\frac{22-7}{22}\times 100\\\\=\frac{15}{22}\times 100\\\\=68.1818182\%\\\\\approx 68.18\%$

Thus, the percentage of ounces Leah has left of her coffee is 68.18%.

5 0

3 years ago