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vampirchik [111]
3 years ago
12

I need help with this question

Mathematics
2 answers:
tankabanditka [31]3 years ago
7 0
I think the answer is A. 40
n200080 [17]3 years ago
3 0
The correct answer is B) 50.

Straight lines add up to 180 degrees. The outside angle measurements given would tell us that the two known angles are 40 (180-140=40) and 90 (180-90=90). Since triangles must add up to 180 degrees, we take 180-90-40= 50, which is the measure of the missing angle.
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Figure out the slope of the line that passed through each pair of points (4,-11) and (7,-8)​
wlad13 [49]

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slope =  \frac{ - 8 - ( - 11)}{7 - 4}  \\

slope =  \frac{ - 8 + 11}{7 - 4}  \\

slope =  \frac{3}{3}  \\

slope = 1

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4 0
3 years ago
Can you guys help me with this i think its d or a
liraira [26]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A bag contains 20 candies: 9 pink candies, 8 red candies, and the rest green candies. Without looking, Sarah pulls out a piece o
Oksana_A [137]

Answer:

The answer is C

Hope this helps!

Mark me brainliest if I'm right ;)

7 0
2 years ago
The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the int
rewona [7]

Answer:

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the population, we have that:

Mean = 0.5

Standard deviaiton = 0.289

Sample of 12

By the Central Limit Theorem

Mean = 0.5

Standard deviation s = \frac{0.289}{\sqrt{12}} = 0.083

The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.

4 0
3 years ago
What is the median of the data set?
gizmo_the_mogwai [7]
7. because you would put the number set into order from least to greatest first, ti would look like this: 2,3,4,5,9,10,12,12. then go to the middle, crossing one from each side off at one time. Then you get 5 and 9 in the middle. Then the middle between 5 and 9 is seven, you can check this by: 5+9=14, then 14/2= 7.
Your median is 7.
6 0
2 years ago
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