Answer:
1) sarah has $100 in her bank account after 5 weeks ans Emily has $95, so Sarah has more.
2)After 6 weeks they will both have $110
Step-by-step explanation:
Some are
y-2=-3x
y+3x=2
3x=2-y
Answer:
6.86 to 2DP.
Step-by-step explanation:
7/12 = 4/DC
Cross multiply:
7DC = 4*12
DC = 48/7
= 6.857.
Complete Question
The complete question is shown on the uploaded image
Answer:
1 ) The correct option B
2) The correct option is C
3) The correct option is C
4) The correct option is C
Step-by-step explanation:
From the question we are told that
The proportion that own a cell phone is 
The sample size is n = 15
Generally the appropriate distribution for X is mathematically represented as

So

Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as



Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

Where q is mathematically evaluated as





Generally the probability that all students in a simple random sample of 15 students own a cell phone is mathematically represented as

From the combination calculator is 


Answer: 12 blue marbles
Step-by-step explanation: Set up a proportion.
4/5 = x/15
Solve for x, the number of blue marbles. Cross multiply. You will get 60 = 5x
Divide by 5 on each side.
x = 12
There are 12 blue marbles.