Answer:
4th
Step-by-step explanation:
Answer:
We need a sample size of 1068.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
95% confidence level
So , z is the value of Z that has a pvalue of , so .
In this problem:
We need a sample size of n.
n is found when
We do not know the exact proportion, so we use , which is when we are are going to need the largest sample size. So
Rounding up
We need a sample size of 1068.
1. positive integer
2. opposites
3. absolute value
4. rational number
Answer:
x = 2.5.
y = 5.
Step-by-step explanation:
As they are image and pre-image of a dilation they are similar triangles, so the corresponding sides are in the same ratio.
4/2 = 5/x
2 = 5/x
2x = 5
x = 2.5.
Also:
4/2 = (y + 1)/ 3
2 = (y + 1) / 3
y + 1 = 6
y = 5.
Answer:
48
Step-by-step explanation:
so
(24√2)²+(24√2)²=c²
24²(2)+24²(2)=c²
576(2)+576(2)=c²
1152+1152=c²
2304=c²
√2304=√c²
48=c