All categories

2 years ago

Determine which of the following are the solutions to the equation below. x2=13

Mathematics

2 answers:

DanielleElmas [232]2 years ago

7 0

Answer:

I think its A. +/13

Step-by-step explanation:

I hope this can help!

Gnoma [55]2 years ago

3 0

It’s A or C ! Hope it helped :)

You might be interested in

Marco has $38.43 dollars in his checking account. His checking account is linked to his amazon music account so he can buy music

kirza4 [7]

38.43 - 1.29x

variable x represents the number of songs purchased

4 0

2 years ago

An inspector inspects large truckloads of potatoes to determine the proportion p in the shipment with major defects, prior to us

Sindrei [870]

Answer:

$0.06 - 1.96\sqrt{\frac{0.06(1-0.06)}{200}}=0.027$

$0.06 + 1.96\sqrt{\frac{0.06(1-0.06)}{200}}=0.093$

The 95% confidence interval would be given by (0.027;0.093)

A. 0.027 to 0.093.

Step-by-step explanation:

Notation and definitions

$X=12$ number of defective.

$n=200$ random sample taken

$\hat p=\frac{12}{200}=0.06$ estimated proportion of defectives

$p$ true population proportion of defectives

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the mean is given by the following formula:

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

If we replace the values obtained we got:

$0.06 - 1.96\sqrt{\frac{0.06(1-0.06)}{200}}=0.027$

$0.06 + 1.96\sqrt{\frac{0.06(1-0.06)}{200}}=0.093$

The 95% confidence interval would be given by (0.027;0.093)

A. 0.027 to 0.093.

6 0

3 years ago

BRAINLIESTT ASAP! PLEASE HELP ME :)

Anvisha [2.4K]

Step-by-step explanation:

$\displaystyle y = Asec(Bx - C) + D$

According to this trigonometric function, −C gives you the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL:

$\displaystyle Phase\:[Horisontal]\:Shift → \frac{0}{4} = 0 \\ Period → \frac{2}{4}π = \frac{π}{2}$

Therefore we have our answer.

Extended Information on the trigonometric function

$\displaystyle Vertical\:Shift → D \\ Phase\:[Horisontal]\:Shift → \frac{C}{B} \\ Period → \frac{2}{B}π \\ Amplitude → |A|$

NOTE: Sometimes, your vertical shift might tell you to shift your graph below or above the midline where the amplitude is. Moreover, ALL tangent, secant, cosecant, and cotangent functions have NO AMPLITUDE.

I am joyous to assist you anytime.