Your Question:
John is about to roll a six-sided, fair number cube 60 times. He wants to predict how many times the cube will land on an even number. He makes a prediction of 20 times. Is it a good prediction? What would your prediction be based on theoretical probability?
My answer:
each dice has these 6 numbers
1,2,3,4,5,6
the even out of all of the numbers are
2,4,6
The others are odd (obviously)
1,3,5
So 1/2 are odd.
1/2 of 60 is the number of times it would get even numbers,
1/2 of 60=1/2 times 60=30
My prediction was 30!
→Jessie←
of the course without trees?
unit
Answer:
61
Step-by-step explanation:
99 minus 38
Answer:
61 meters
Step-by-step explanation:
To find this answer, you need to subtract the length with trees from the total length of the course. With this information, you get an equation that looks something like x + 38 = 99, with x being the length of the course without trees.
Subtract 38 from both sides:
x + 38 = 99
- 38 - 38
x = 99 - 38
Simplify:
x = 61
Answer:
The weight of the larger box is 18.75 kg
The weight of the small box is 6.75 kg
Step-by-step explanation:
Let
x -----> the weight of large box
y ----> the weight of small box
we know that
The system of equations is equal to
9x+7y=216 -----> equation A
3x+5y=90 -----> equation B
Solve the system of equations by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (18.75,6.75)
therefore
The weight of the larger box is 18.75 kg
The weight of the small box is 6.75 kg