Ok so these are the answers that I can choose~ (Please and thank you <3)

Mathematics

2 answers:

xxMikexx [17]3 years ago

8 0

A.)44
The total number will equal 180. All right angles are 90. 180-90-46 equal 44

uranmaximum [27]3 years ago

7 0

Answer:

44 degrees, or A is your answer.

Step-by-step explanation:

You know angle A which is 46 and angle C which is 90, now all you have to do is solve to find angle B.

90+46=136

All the sides have to add up to 180 so simply do 180 - 136.

That will get you 44.

You might be interested in

The difference between 7 twenty fives and 3 twenty fives

fomenos

7 x 25 = 175
3 x 25 = 75

when you subtract the products you get 100

7 0

3 years ago

Suppose that the researchers wanted to estimate the mean reaction time to within 6 msec with 95% confidence. Using the sample st

Lisa [10]

Answer:

a) The 95% confidence interval would be given by (509.592;550.308)

b) n=523 rounded up to the nearest integer

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".

$\bar X=530$ represent the sample mean for the sample

$\mu$ population mean

s=70 represent the sample standard deviation

n=48 represent the sample size (variable of interest)

Confidence =95% or 0.995

Part a

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

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

The degrees of freedom are df=n-1=48-1=47

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 table to find the critical value. The excel command would be: "=-T.INV(0.025,47)".And we see that $z_{\alpha/2}=2.01$