Answer:
2x = -5 +/- root 5 (opt 3)
Step-by-step explanation:
0 = 4f(x)
= 4(x^2 + 5x + 5)
= 4x^2 + 20x + 20
= (2x)^2 + 2*2x+5 + 25 - 5
= (2x + 5)^2 - (root 5)^2
= ((2x+5) - 5) ((2x + 5) + 5)
= (2x + 5 - 5) (2x + 5 - 5)
Therefore, 2x = -5 +/- root 5
Hope u understand.
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Answer:
Step-by-step explanation:
Given
The attached circle
Required
Find the measure of x
From the attached image:
and 
form a semi-circle
So:
Collect like terms
Solve for x
Answer:
e= 2.15
Step-by-step explanation:
Subtract both sides by 6
2.15=e
Thus e is 2.15
Hope this helps!
Answer:
find 80 percent
Step-by-step explanation:
Answer: The correct answer is Choice D.
Step-by-step explanation: The correct answer is choice D.
Y = the total amount money that Kelly earned
X = the cost of each manicure
So, in choice D, the total amount that Kelly earned equals 12 times the cost of the manicure plus the 60 in tips that she received for the day.
