hey im in 9th grade math and i need help on 10 of them---
Question Number: 1
Jasmin takes three walks a day. If her walks last 30 minutes, 47 minutes, and 1 hour,
respectively, and she walks a total of 4 miles a day, which of the following reflects the
approximate pace she walks?
A) two and a quarter miles per hour
B) two and a half miles per hour
C) one half mile per hour
D) one quarter mile per hour
Question Number: 2
You are going to a movie, and your friend says it is showing some time on the weekend
between noon and 8, but won't say when, exactly.
What are the chances it is playing on Sunday between 6 and 8?
A) 12.5%
B) 25%
C) 37.5%
D) 50%
Question Number: 3
Todd ran three-fourths of a half mile and dropped out of the 800 meter race. His pace was
12 miles an hour until the point he dropped out of the race. About how many minutes did
he run?
A) 1 minute
B) 1.5 minutes
C) 3 minutes
D) 2 minutes
Question Number: 4
Bill is working out by running up and down steps at the local stadium. He runs a different
number of steps in a random order.
Which of the following is his best time?
A) 25 steps in 5 minutes
B) 30 steps in 5.5 minutes
C) 20 steps in 4.5 minutes
D) 15 steps in 4 minutes
Question Number: 5
Joel rolls two dice at the same time. What is the probability that he will roll a sum of
eleven?
A)
2
24
B)
1
18
C)
11
36
D)
1
6
Question Number: 6
Danny rolls two number cubes (dice), one red and one blue. What is the probability that he
will roll a 2 on the red cube and a 6 on the blue cube?
A)
1
6
B)
2
15
C)
1
18
D)
1
36
Question Number: 7
Which of the following statements about inversely proportional relationships is Not true?
A) As one quantity increases, the other decreases.
B) If a = 1, b = 2,and c = 3, then d = 6 in a/b = c/d.
C) As elevation increases, air pressure decreases.
D) 2/1 = 1/ (1/2)
Question Number: 8
How much water will fill a pool shaped as a triangular prism given its length is 13m, a
height of 6m and base of 2m?
A) 78 m3
B) 156 m3
C) 21 m3
D) 19 m3
Question Number: 9
Mary swam five and one-half laps in four minutes.
Which of the following would represent an improvement in her speed?
A) 1.5 laps per minute
B) 1.375 laps per minute.
C) 0.73 minutes per lap
D) 1 minute per lap
Question Number: 10
Bill eats 30 small meals every 7 days. In 4 and a half days, about how many meals did Bill
eat?
A) 21 meals
B) 20 meals
C) 18 meals
D) 24 meals
HELPPPPPP pleaseeeeee
umm how you do thet??
You did not show what your choices are as answers.
Some of these are estimates so you really don't need an exact answer.
e.g. #1, your times are 30 min, 47 minutes and 1 hour, and your answers are all in miles/hour
47 minutes = appr 3/4 hour
so your time = appr 1/2 + 3/4 + 1 = 9/4 hours
since rate = total distance/total time,
you have 4/(9/4) = 16/9 = a bit less than 2 mph
None of your choices come close.
actual answer = 4/(1/2 + 47/60 + 1) = 1.752 miles/hour
#2, strange question
possible times of showing: Saturday from noon to 8 pm = 8 hours
same for Sunday, so total time is 16 hours
specified time , Sunday from 6 to 8 = 2 hours
prob = 2/16 = 1/8 <-----> .125 <-----> 12.5%
#3, why talk about miles in a 800 metre race??
anyway....
so he ran 3/4 of a half-mile race, or he ran for 3/8 of a mile
at 12 mph, the time would be (3/8)/12 = 1/32 hour = 15/8 minutes
I would pick appr 2 minutes
#4, make yourself a chart showing die#1 and die#2, and their sums
aren't the only cases for sum of 11 the pairs 5,6 and 6,5?
Aren't there a total of 36 entries in the sums?
soooo....
How about you doing the rest , and letting me know what you get