Answer:
140 words
Step-by-step explanation:
So 10% said they lived in city
60 said they lived in city
60=10%
remember that 100%=all
60=10%
remember th fact that 10 times 10=100
60 times 10=10 times 10%
600=100%
600 people surveyed
Answer:
shorter piece = 7 ft
longer piece = 19 ft
Step-by-step explanation:
L = longer board
S = shorter board
L+S = 26 then L =26-S
L = 5+2S
substitute for L
26-S = 5+2S
add S to each side & subtract 5 from each side
3S = 21
divide both sides by 3
3S/3 = 21/3
S = 7
L = 19
Answer:
a) 0.857
b) 0.571
c) 1
Step-by-step explanation:
Based on the data given, we have
- 18 juniors
- 10 seniors
- 6 female seniors
- 10-6 = 4 male seniors
- 12 junior males
- 18-12 = 6 junior female
- 6+6 = 12 female
- 4+12 = 16 male
- A total of 28 students
The probability of each union of events is obtained by summing the probabilities of the separated events and substracting the intersection. I will abbreviate female by F, junior by J, male by M, senior by S. We have
- P(J U F) = P(J) + P(F) - P(JF) = 18/28+12/28-6/28 = 24/28 = 0.857
- P(S U F) = P(S) + P(F) - P(SF) = 10/28 + 12/28 - 6/28 = 16/28 = 0.571
- P(J U S) = P(J) + P(S) - P(JS) = 18/28 + 10/28 - 0 = 1
Note that a student cant be Junior and Senior at the same time, so the probability of the combined event is 0. The probability of the union is 1 because every student is either Junior or Senior.
Answer:
14-2x=4*2x-38
Step-by-step explanation: