Parenthesis, exponents, multiplication and division, addition and subtraction
Answer:
x = 0
Step-by-step explanation:
2x−6=3x+1−2x−7
Step 1: Simplify both sides of the equation.
2x−6=3x+1−2x−7
2x+−6=3x+1+−2x+−7
2x−6=(3x+−2x)+(1+−7)(Here we Combine Like Terms)
2x−6=x+−6
2x−6=x−6
Step 2: Subtract x from both sides.
2x−6−x=x−6−x
x−6=−6
Step 3: Add 6 to both sides.
x−6+6=−6+6
x=0
Answer:
Answer: |
1/(a b x y)
Step-by-step explanation:
Simplify the following:
(x^2 y^2 m n x^8 y^9 m n)/(x^11 y^12 m^2 n^2 a b)
Combine powers. (m n x^8 y^9 m n x^2 y^2)/(a b m^2 n^2 x^11 y^12) = (m^(1 + 1 - 2) n^(1 + 1 - 2) x^(8 + 2 - 11) y^(9 + 2 - 12))/(a b):
(m^(1 + 1 - 2) n^(1 + 1 - 2) x^(8 + 2 - 11) y^(9 + 2 - 12))/(a b)
1 + 1 - 2 = 0:
(m^0 n^(1 + 1 - 2) x^(8 + 2 - 11) y^(9 + 2 - 12))/(a b)
1 + 1 - 2 = 0:
(m^0 n^0 x^(8 + 2 - 11) y^(9 + 2 - 12))/(a b)
8 + 2 - 11 = -1:
(m^0 n^0 x^(-1) y^(9 + 2 - 12))/(a b)
9 + 2 - 12 = -1:
(m^0 n^0 y^(-1))/(x a b)
n^0 = 1:
m^0/(a b x y)
m^0 = 1:
<span>15x-3y=27
5x+4y=14
multiply (2nd) equation by (3)
15x + 12y = 42
</span>15x - 3y=27
15x + 12y = 42
-------------------substract
-15y = -15
y = 1
15x-3y=27
15x-3(1)=27
15x - 3 = 27
15x = 30
x = 2
so now you have x = 2, y =1
answer <span>D. (2,1)</span>
Answer:
73% of readers who are satisfied with their lives would be described as a sample statistic.
Step-by-step explanation:
The right option is D.
A) The population include all the readers of USA today.
B) The sample includes all the readers that answer the poll, wether they answer Yes or No.
C) A population statistic would be the population proportion. It is not mentioned in the text, and it would have to be estimated from the result of the sample.
D) A sample statistic is the proportion of readers that answer affirmatively the poll (p=0.73).
