A student is taking a T/F quiz and has not studied (not smart) and decides to compound his problem by guessing randomly. The test
has 20 questions.

What is the probability that he gets at least 15 correct?
What is the probability that he gets no more than 10 correct?
What is the probability that he aces the quiz?
How many problems can he expect to get right with this strategy?

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

answer: 590

step-by-step explanation:

24/56=hx^7

step-by-step explanation:

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.