All categories

3 years ago

I NEED AN EXPLANATION PLEASE!! I need a fast answer

Mathematics

2 answers:

mestny [16]3 years ago

8 0

Answer:

i think B which is 74

Step-by-step explanation:

coldgirl [10]3 years ago

4 0

Answer:

B) 74 degrees

Step-by-step explanation:

three angles = 180

2x+32=180

2x=148

x=74

Hope this helps plz hit the crown :D

You might be interested in

A cyclist rode for 3.5 hours and completed a distance of 60.9 miles. If she kept the same average speed for each hour, how far d

SVETLANKA909090 [29]

divide total miles by total time:

60.9 / 3.5 = 17.4 miles per hour

5 0

3 years ago

Read 2 more answers

Slope= -1; y-intercept = 8

kotykmax [81]

Answer:

y=-1x+8

Step-by-step explanation:

idk what to do here

4 0

2 years ago

Read 2 more answers

Yesterday, the snow was 2 feet deep in front of Archie’s house. Today, the snow depth dropped to 1.6 feet because the day is so

jolli1 [7]

Was = 100%
Now = 80%
Difference = 20%

5 0

3 years ago

Read 2 more answers

Estimate how long it will take to complete the

drek231 [11]

Answer:

Step-by-step explanation:

It's just that simple man.

5 0

3 years ago

A teacher was interested in knowing the amount of physical activity that his students were engaged in daily. He randomly sampled

klasskru [66]

Answer:

The standard error of the mean is 4.5.

Step-by-step explanation:

As we don't know the standard deviation of the population, we can estimate the standard error of the mean from the standard deviation of the sample as:

$\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}$

The sample is [30mins, 40 mins, 60 mins, 80 mins, 20 mins, 85 mins]. The size of the sample is n=6.

The mean of the sample is:

$\bar{x}=\frac{1}n} \sum x_i =\frac{30+40+60+80+20+85}{6}=52.5$

The standard deviation of the sample is calculated as:

$s=\sqrt{\frac{1}{n-1}\sum (x_i-\bar x)^2} \\\\ s=\sqrt{\frac{1}{5}\cdot ((30-52.5)^2+(40-52.5)^2+(60-52.5)^2+(80-52.5)^2+(20-52.5)^2+(85-52.5)^2}\\\\s=\sqrt{\frac{1}{5} *3587.5}=\sqrt{717.5}=26.8$

Then, we can calculate the standard error of the mean as:

$\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}=\frac{26.8}{6}= 4.5$

6 0

3 years ago