Answer:
I need Help on this one too.
Step-by-step explanation:
I am a Scuba Diver Haha But please help
Answer:
Pr(≥ 70%) = 2/5 = 0.4
Step-by-step explanation:
This question is incomplete as we can't get an exact answer without the dot plot diagram.
We can tell from the question, we are to determine the probability of having ≥ 70% students that play sports
The dot plot diagram used in solving the question has been attached.
Total number of samples = 20
From the dot plot, 50% of students play sport. That is, 50% have more people playing sport than others.
The chance of getting a sample proportion of 70% or greater= probability of students that like sports ≥ 70%
= (sum of people that like sports ≥ 70%)/(total number of sample)
Pr(≥ 70%) = (4+3+1)/20
Where Pr = probability
Pr(≥ 70%) = 8/20
Pr(≥ 70%) = 2/5 = 0.4
Answer:
He would need to mow 7 lawns to buy the discount scooter and 9 without the discount
Step-by-step explanation:
If he mowed 7 lawns would make $47.25 and 47.25 - 1.05 for gas is 46.20
If he mowed 9 lawns for the non-discounted scooter he would make 60.75 and 60.75 - 1.35 for gas is 59.40
Answer:
yes
Step-by-step explanation:
because the lines show that those two sides are congruent, and because there are two congruent sides, then the third has to be the same to connect the triangles
Answer:
76 balls and 24 bats
Step-by-step explanation:
Set up a system of equations where x is the number of balls and y is the number of bats:
x + y = 100
4.5x + 20y = 822
Solve by elimination by multiplying the top equation by -20, then combine the equations together:
-20x - 20y = -2000
4.5x + 20y = 822
-15.5x = -1178
x = 76
Then, plug in 76 as x in the first equation to solve for y:
x + y = 100
76 + y = 100
y = 24
So, 76 balls and 24 bats were purchased.