All categories

2 years ago

How to get a tutor on here y’all ? It’s won’t pop up for me

Mathematics

2 answers:

Fantom [35]2 years ago

6 0

Answer:

I dont think you can, Pretty sure u can only search for answers. I would double check though

Step-by-step explanation:

Lilit [14]2 years ago

6 0

I’m pretty sure that when you ask a question it will give you an option of asking a tutor if you have the Brainly app

You might be interested in

Hanson is at a ball game with his family. he goes to the concession stand to buy soft pretzels and water bottles for everyone. a

guajiro [1.7K]

The system of equation that can be used to represent the situation is as follows:

x + y = 16

2x + 3.5y = 47

The number of water bottle bought = 6

The number of pretzel bought = 10

Let

x = number of water bottle bought

y = number of pretzel bought

Hanson buys 16 items. Therefore,

x + y = 16

Hanson spends a total of $47. Therefore,

2x + 3.5y = 47

<h3>Combined System of equation:</h3>

x + y = 16
2x + 3.5y = 47

Therefore, let multiply equation(i) by 2

2x + 2y = 32

2x + 3.5y = 47

1.5y = 15

y = 15 / 1.5

y = 10

x + 10 = 16

x = 6

learn more on system of equation: brainly.com/question/20313322?referrer=searchResults

7 0

2 years ago

How do you find the exterior angle of a polygon?

trasher [3.6K]

The sum of the measures of the interior angles of a polygon with n sides is (n – 2)180.

The measure of each interior angle of an equiangular n-gon is.

If you count one exterior angle at each vertex, the sum of the measures of the exterior angles of a polygon is always 360°.

7 0

3 years ago

Here are summary statistics for randomly selected weights of newborn girls: nequals=174174, x overbarxequals=30.930.9 hg, seq

MaRussiya [10]

Answer:

The 95% confidence interval would be given by (29.780;32.020)

Step-by-step explanation:

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".

$\bar X=30.9$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s=7.5 represent the sample standard deviation

n=174 represent the sample size

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

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=174-1=173$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-T.INV(0.025,173)".And we see that $t_{\alpha/2}=1.97$ , this value is similar to the obtained with the normal standard distribution since the sample size is large to approximate the t distribution with the normal distribution.