Answer:
Option B
Step-by-step explanation:
Given: x² + 10x + 13
To make a complete square, we will use (b/2)² to add terms to complete the square where b is the coefficient of x
b = 10 , (b/2)² = 5² = 25
So, add 25 and subtract 25
x² + 10x + 13
= x² + 10x + 13 + 25 - 25
= (x² + 10x + 25) + 13 -25
= (x+5)² - 12
By comparing the options with the previous steps
So, the answer is <u>option B</u>
Answer:
I think it is c because yah
Answer:
-6/7
Step-by-step explanation:
The slope of the line perpendicular to DE is the negative reciprocal of the slope of DE. The slope of DE is ...
(change in y)/(change in x) = (y2 -y1)/(x2 -x1) = (-3-4)/(1-7) = -7/-6 = 7/6
The inverse of that is 6/7, and the opposite of that inverse is -6/7.
The slope of the line perpendicular to DE is -6/7.
rationalise the denominator by multiplying both top and bottom by (8-5√3) then expand and simplify
Answer:B
Step-by-step explanation:
3.1x10^9 is putting 9 zero’s behind the 3.1
move the decimal point over 9 spaces which will leave you with 3,100,000,000
= 3.1 Billion
