Distribute the negative sign
Combine like terms
-9x^2 + 7x^2 = -2x^2
9x - 3x = 6x
13 - 6 = 7
<u>Answer</u>
Answer:
No she is wrong 3 to the second power first
Step-by-step explanation:
Answer:
Step-by-step explanation:
- (4a² - 36)/(24 - 8a) =
- 4(
a² - 9) /8(3 - a) =
- (
a² - 9) /2(3 - a) =
- (a + 3)(a - 3)/2(3 - a) =
- - (a + 3) (3 - a)/2(3 - a) =
- - (a + 3) / 2
Answer:
327
Step-by-step explanation:
Calculation for How large of a sample would be required in order to estimate the mean per capita income
First step is to find z 80% confidence level
At 80% confidence level the z will be:
α/2 = 1 - 80% = 1 - 0.80 = 0.20
α/2= 0.20 / 2 = 0.01
Zα/2= Z0.01= 1.28 from z table
Now let calculate the Sample size using this formula
Sample size = n= [( Zα/2* σ ) / E]^2
Let plug in the formula
n = (1.28*7.9/0.56)^2
n= 326.06
n=327 (Approximately)
Therefore How large of a sample would be required in order to estimate the mean per capita income will be 327
Answer
Simplified would be 21+3q
Step-by-step explanation:
3(2+q)+15----> Distribute the 3. aka multiplying by everything in the parenthesis
6+3q+15
21+3q
