Five times the sum of twice a number, x, and two is ten. Find the number. x=?
2 answers:
Answer:
x = 0
Step-by-step explanation:
First, let's translate this statement into an equation.
- 5 times the sum of twice a number, x, and two means "5(2x + 2)"
- is ten means "= 10
- 5(2x + 2) = 10
<u>Solving</u>
Step 1: Simplify both sides.
Step 2: Subtract 10 from both sides.
Step 3: Divide both sides by 10.
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Answer:
u = 7
Step-by-step explanation:
Using the slope intercept formula:
Substitute our values from the points and the known slope:
Now we multiply both sides by (8 - u) to isolate the x:
(8-u) x = -7 (8 - u)
Next we add 56 to both sides:
-7 = -56 + 7u
Finish off by dividing both sides by 7:
7u = 49
u = 7