Answer:
D -$7.20
Step-by-step explanation:
- If she takes (substance) $2.40 every times she forgets to do a chores you have to substance
- but first you have to multiply because she forgets 3 times
- 2.40 × 3 is 7.20
- but since she taking it away it would be negative
so your answer is -$7.20
I hope this helps
Answer:
a = 15
Step-by-step explanation:
First, you have to combine like terms: 5a and 3a, -5, -15, 6, and 4.
You can do it in any order and you will always get a = 15 for your answer.
Hope this helps!!!
Answer:
The answer is c.) 0.6 and 0.14
Step-by-step explanation:
Given population has a size of 320.
The proportion of population = 0.6
The mean of population, p = 0.6
The mean of sample,
= 0.6
Therefore
= 1 -
= 1 - 0.6 = 0.4
The sample size = 12
Therefore the standard deviation of the sample,

The mean and the standard deviation for a sample size of 12 are 0.6 and 0.14 respectively.
The answer is c.) 0.6 and 0.14
Answer:
16.34 hours
Step-by-step explanation:
According to the given information we can see that the case is of exponential growth
Hence, we will use the formula

Here A =800 is the amount that is needed to reach
P is the initial amount that is 500
We have to find the time it will take to reach 800 that is we need to find t
On substituting the values in the formula we get

On simplification we get

Taking log on both sides we get

using 
And 

Now substituting values of log 8=0.903, log 5=0.698 and log 2=0.301 we get



