All categories

3 years ago

Find the 8th term -10, -4, 2, 8, 14, ... Formula: Arithmetic or Geometric:

Mathematics

1 answer:

KatRina [158]3 years ago

4 0

Answer:

20 will be next

Step-by-step explanation:

because the formula is +6

8+6=14

14+6=20

You might be interested in

What is the domain of f?

nalin [4]

When we ask you the domain of f, you need to search for a forbidden value ?

for example you can't divide by zero, so assume x was equal to seven.

Then you would have f(7) = 7 / 7-7 = 7 / 0 this would be impossible because you can't divide by zero, yes ?

Other than that everything works, so the answer is c : all real values of x such that x ≠ 7

Good Luck

4 0

3 years ago

Jonah wants to construct a confidence interval using 90% confidence to estimate what proportion of silicon wafers at his factory

Nimfa-mama [501]

Answer:

170

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 level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

The margin of error is of:

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

Assume:

$\pi = 0.06$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

What is the smallest sample size required to obtain the desired margin of error?

This is n for which M = 0.03. So

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

$0.03 = 1.645\sqrt{\frac{0.06*0.94}{n}}$

$0.03\sqrt{n} = 1.645\sqrt{0.06*0.94}$

$\sqrt{n} = \frac{1.645\sqrt{0.06*0.94}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.645\sqrt{0.06*0.94}}{0.03})^2$

$n = 169.6$

Rounding up, 170.

4 0

3 years ago

Write each fraction as a percent. Use a model if needed. V-2

alexandr402 [8]

7/10 = 70%
21/25 = 84%
3/5 = 60%
18/25 = 72%

8 0

3 years ago

Read 2 more answers

If angles are congruent, solve by setting expressions equal to each other.<br><br> True<br> False

Taya2010 [7]

Answer: True, angles that are congruent are equaled to each other

3 0

3 years ago

At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 9.8% e

fredd [130]

Answer:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

Step-by-step explanation:

In this problem, the initial area of the forest at time t = 0 is

$A_0 = 1500 km^2$

After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.

So for instance, after 1 year, the area is

$A_1 = A_0 \cdot \frac{90.2}{100}=0.902 A_0$

After 2 years,

$A_2=0.902 A_1 = 0.902(0.902A_0)=(0.902)^2 A_0$

And so on. So, after t years, the area of the forest will be

$A(t)=(0.902)^t A_0$

And by substituting the value of A0, we can find an explicit expression:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

8 0

4 years ago