Answer: jnj njnjnjknkjkjnkjnkjn
bbnj j
Step-by-step explanation:
Answer:
2/3
Step-by-step explanation:
Time it would take Sarah to complete the work in one hour = work completed in 1/4 hours x 4
We are multiplying by 4 because there are 4, 1/4 in an hour
1/4 + 1/4 + 1/4 + 1/4 = 1 hour
× 4 = 
To transform to the simplest form. divide both the numerator and the denominator by 2
= 
Answer:
648
Step-by-step explanation:
Write 162% as 162
/100
Since, finding the fraction of a number is same as multiplying the fraction with the number, we have
162
/100 of 400 = 162
/100
× 400
Therefore, the answer is 648
If you are using a calculator, simply enter 162÷100×400 which will give you 648 as the answer
Answer:
We are 90% sure that the true proportion of Americans who approve the ppresident's policies is in the interval from 42% to 46%.
Step-by-step explanation:
A confidence interval of a proportion p% at the x% level with m% margin of error means that:
We are x% sure that the true mean of the population is in the interval from (p-x)% to (p+x)%.
In this problem, we have that
90% confidence level
44% with a margin of error of 2%
So:
We are 90% sure that the true proportion of Americans who approve the ppresident's policies is in the interval from 42% to 46%.
Answer:
51.3
Step-by-step explanation:
The formula is Θ/360 × πr²
30/360 × 22/7 × 14²
30/360 × 22/7 × 196
= <u>51.3</u>