Answer:
51 feet
Step-by-step explanation:
Let
x -----> the height of a flagpole
we know that
Using proportion

B. 36
because if you find the area of the big square its 5×6 and the smaller rectangle is 3×2
so its 30+6
36
20-14=6
6÷24=1/4
1/4 liters of water leaked out per hour
Hello!
First you have to find the values that you can
Angles that are across each other are the same
So the one across 80 is 80 and the angle across 70 is 70
You know 4 of the 6 angles
You add these up together
80 + 80 + 70 + 70 = 300
All the angles together make a circle
A circle has a area of 360
So you do 360 - 300 = 60
Since there are 2 angles left you do
60/2 = 30
The answer is 30
Hope this helps!
Answer:
Approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956
Step-by-step explanation:
The formula to use to solve this question is called the Confidence Interval formula.
Confidence interval =
x ± z × ( σ/ (√n) )
Where:
x = the sample mean = 130
z = the z-value for 90% confidence = 1.645
σ = standard deviation = 7
n = sample size = 145
130 ± 1.645 × (7/√145)
130 ± 0.9562687005
130 - 0.9562687005 = 129.0437313
130 + 0.9562687005 = 130.9562687005
Therefore, approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956