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Sergeu [11.5K]
3 years ago
15

I'm so incredibly confused on this. I will give brainliest for the correct answer.

Mathematics
1 answer:
o-na [289]3 years ago
4 0
Hey!!

here is your answer >>>

The interior angle A measures 77°

The exterior angle measures 130°

The sum of angles A and B is 130°

Yes, it's true, this a property of the triangle, the last question is 'true'

Hope my answer helps!
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In a survey at a local college, 18% of students reported that they do not own a mobile device with internet capabilities. if 20
Sholpan [36]

Answer:

0.64

Step-by-step explanation:

The probability that randomly selected student doesn't own a mobile device with internet capabilities is p=0.18 and the probability that randomly selected student owns a mobile device with internet capabilities is q=1-p=1-0.18=0.82.

If 20 students are selected at random, the probability that at most 5 students (0 students, 1 student, 2 students, 3 students, 4 students or 5 students) don't own a mobile device with internet capabilities is

Pr=C_{20}^0p^0q^{20}+C_{20}^1p^1q^{19}+C_{20}^2p^2q^{18}+C_{20}^3p^3q^{17}+C_{20}^4p^4q^{16}+C_{20}^5p^5q^{15}=q^{20}+20pq^{19}+190p^2q^{18}+1,140p^3q^{17}+4,875p^4q^{16}+15,504p^5q^{15}\approx 0.6405021423\approx 0.64.

3 0
3 years ago
A wall is 20 inches thick. 6 inches is​ concrete, 9 inches is​ brick, and 5 inches is limestone. What fraction of the wall is​ c
Citrus2011 [14]

Answer:

30%

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Audrey drew a model to determine how many eighths are in 5.
____ [38]

Answer:

there are 40 eighths in 5

Step-by-step explanation:

40/8 (the fraction)

40÷8=5

is that what the question is asking?

8 0
3 years ago
Read 2 more answers
Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly. However, this
Anastasy [175]

Answer:

Step-by-step explanation:

Let X be average interest paid monthly by a bank's Visa cardholders

Given that X is N(28, 8)

In the following to find out probability we convert X to z score and use std normal distribution table

Z = \frac{x-28}{8}

Probability being less than 1 is here equal to the proportion also.

A) P(X>32) = P(Z>0.5)=0.5-0.1915=0.3085

B) P(X>40) = P(Z>1)=0.5-0.3413=0.1687

C) P(X<19) = P(Z<-1.125)=0.5-0.0438=0.4562

D) We have to find 19th percentile here

Z =-0.88

X=28-0.88(8)\\=20.96

5 0
3 years ago
Can somebody help me with this equation?
Minchanka [31]

Answer:

-12

Step-by-step explanation:

-9-9-(-6)

-9-9+6

-18+6

-12

Therefore, the answer is -12

Please mark as brainliest.

8 0
2 years ago
Read 2 more answers
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