Answer:
5
Step-by-step explanation:
If he had 100, and got 300 more:
100 + 300 = 400.
Bill now has 400 balloons.
Hope it helped,
Happy homework/ study/ exam!
Answer:
1.4/0.21= 140/21= 20/3
Step-by-step explanation:
Margin of error = Critical Value × Standard Error
We work out critical value from the information of confidence interval.
We have 95% confidence interval, hence the z-score (that is the critical value) is 1.96 (refer to the picture below)
Standard Error =
Standard Error =
Margin of error = 1.96 × 1.46 = 2.87 (rounded to 2 decimal place)
Answer:
The volume of the cylinder is 904.32cm³
Step-by-step explanation:
To calculate the volume of a cylinder we have to use the following formula:
v = volume
h = height = 8cm
π = 3.14
r = radius = 6cm
v = (π * r²) * h
we replace with the known values
v = (3.14 * (6cm)²) * 8cm
v = (3.14 * 36cm²) * 8cm
v = 113.04² * 8cm
v = 904.32cm³
The volume of the cylinder is 904.32cm³