Assign a probability to the following event, and give the method used to assign it: What is the probability that a randomly selected day of the week will be a Friday

Step-by-step explanation:

We know, that probability of an event E, is .

Here, there are days in a week.

So, total number of outcomes .

And only one day, that is, Friday is selected.

So, number of favorable outcomes .

Therefore, probability .

Hence, the probability that a randomly selected day of the week will be a Friday .

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.