$9.30 because $3 x 3.1 = 9.3
QR = 23
Because the triangles are equal to each other, sides QR and TV are also equal. You can create an 3 or 4 step equation by writing the the QR equation is equal to the TV equation and then solving for X. After you solve for X, plug it back into the QR equation to solve for QR.
Answer:
a
Step-by-step explanation:
you do a because there is a 7% increase (times 0.07) and add 1 because the original value dosnt leave
Answer:
(a) The expected score is 12.8
(b) The standard deviation is 3.2 and variance is 10.24
Step-by-step explanation:
Consider the provided information.
You are to take a multiple-choice exam consisting of 64 questions with 5 possible responses to each question.
Here n=64 p=1/5 and q=1-1/5=4/5
Part (a) we need to find the expected score on the exam.
Expected = np
Expected score = number of questions × P(right)

Hence, the expected score is 12.8
Part (b) Compute the variance and standard deviation of x.
Standard Deviation: 
Now calculate the standard deviation as shown:



Variance: 



Hence, the standard deviation is 3.2 and variance is 10.24
There are two interleaved arithmetic sequences here.
Odd terms are 5, 7, 9, 11, increasing by 2 each time.
Even terms are 1, 0, -1, decreasing by 1 each time.
The next two terms will be -2, 13.