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In the following question, you are solving for the variable, x. Note the equal sign, what you do to one side of the equation, you do to the other.
Do the opposite of PEMDAS. PEMDAS is the order of operation, and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
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First, add 2 to both sides of the equation:
10x - 2 (+2) = 38 (+2)
10x = 38 + 2
10x = 40
Next, divide 10 from both sides of the equation:
(10x)/10 = (40)/10
x = 40/10
x = 4
x = 4 is your answer.
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Answer: 1,500 x 12
Step-by-step explanation:
They make 1500 a month, there are 12 months in a year.
Multiply the monthly income by 12 to find the yearly salary
Answer:
-20x^2 + 53x -18
Explanation:
FOIL
First terms
Outer terms
Inner terms
Last terms
So lets do our F:
5x * -4x = -20x^2
Now lets do our O:
5x * 9 = 45x
Now lets do our I:
-2 * -4x = 8x
Now lets do our L:
-2 * 9 = -18
Lets put all those together:
-20x^2 + 45x + 8x - 18
Combine like terms:
-20x^2 + 53x -18
Answer:
The answer to your question is the last option
Step-by-step explanation:
Quadratic equation
2 = - x + x² - 4
Order the equation from the highest power to the lowest power. Do not consider 2 because it is not consider in the options given.
x² - x - 4 = 0
Identify a, b and c
(1) x² -(1) x - 4 = 0
a = 1 b = -1 c = - 6
Substitution
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