To calculate this, we have to divide 2 1/2 by 8.
first, i wil turn 2 1/2 into fraction:
it's
and if we divide this by 8, we multiply the denominator by 8:
and this is the answer!
Answer:
3x-5y
Step-by-step explanation:
All you need to do here is combine like terms.
13x - 10x = 3x
2y - 7y = -5y
When they ask you to simplify the expression, they're not looking for you to solve anything. You just have to combine what you can. :)
Answer:
A. Yes; measure of interior angle = 90
Step-by-step explanation:
I calculated it logically
What I would usauly do, is switch the whole equation all over.
The inverse of division is multiply. 4 by 2 would equal 8.
So therefore, 8 divided by 2, would then equal 4.
Your answer: 8
Answer:
<h2>
11.2≤
12.8 </h2>
Step-by-step explanation:
Confidence interval for the population mean is expressed by the formula;
CI = xbar ± Z(S/√n) where;
xbar is the sample mean = 12.5
Z is the z score at 99% confidence = 2.576
S is the standard deviation = √variance
S = √2.4 = 1.5492
n is the sample size = 25
Substituting the given values into the formula given above,
CI = 12.5 ± 2.576(1.5492/√25)
CI = 12.5 ± 2.576(0.30984)
CI = 12.5 ± 0.7981
CI = (12.5-0.7981, 12.5+0.7981)
CI = (11.2019, 12.7981)
Hence the 99% confidence interval for the population mean is 11.2≤12.8 (to 1 decimal place)
