Z + Y = a right angle so need to equal 90 degrees:
Find Z & Y:
2b + 6 + 3b -1 = 90
5b +5 = 90
5b = 85
b = 85/5
b = 17
Z = 2(17) +6 = 34+6 = 40 degrees
Y = 3(17) - 1 = 51 - 1 = 50 degrees
Y & W make a straight line so need to equal 180:
W = 180 - 50 = 130 degrees.
Z & X make a straight line so need to equal 180:
X = 180 - 40 = 140 degree.
1. P(getting all head)=
2. Event: getting all head can happen in only one way: HHH
3. n(Sample space) can be calculated by
a. counting, a good ways to organize counting is drawing a tree diagram, CHECK THE PICTURE
or
b. There are 2 possible outcomes each time we throw the dice so 2*2*2=8 is the total number of outcomes, that is the number of the sample space.
4. So finally P(getting all head)=
Answer:
top left:1/5, 2/7, 3/5, 5/7, 31/35
top right:2/5, 2/3, 7/10, 4/5, 9/10
bottom left:9/8, 15/8, 13/6, 9/4, 15/6
bottom right:13/10, 13/6, 11/5, 25/6, 21/5
Step-by-step explanation:
Answer:
forty and five hundred forty-five thousandths
Step-by-step explanation:
She would give 54 to her friends and keep 18 for herself