Afellow classmate tosses 3 coins and finds that 2 of them come up tails. which of the following is the best conclusion for her to come to?
a) the coins are unfair
b) this could easily happen with a fair coin after only 3 flips
c) she needs to keep flipping the coins until she gets 50% heads in order to determine if they are fair
d) if she flips the coins once more , they will all come up heads

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

unless if u could do my questions, if not i wouldn't want to

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.

their is no graph showing

step-by-step explanation: