Hi okay i’m gonna write the explanation i hope you give me a brilliant if you think I’m deserving it thank you
(x-5)2=16
The first step you can take to solve this quadratic is to take the square root of both sides of the equation.
√[(x-5)2]=√(16)
When you take the square root of a term that is square it equals what is inside the parentheses.
So on the left side, you have x-5
On the right side, you are what we call "forcing" the square root. When this happens, you need to put ±. Why? Good question. When you square a negative number it positive; when you square a positive number it is also positive.
The √16 = ±4
So now we have;
x-5=±4
What do you do with that?
You make two separate equations.
x-5=4 and x-5=-4
x=9 x=1
Let's check our answers
x=9
(x-5)2=16
(9-5)2=16
42=16
16=16 it checks
x=1
(x-5)2=16
(1-5)2=16
(-4)2=16
16=16 it also checks
ANSWER: x=9 and x=1
Answer:
-2.32193...
Step-by-step explanation:
log.5 (5)
Answer:
65 degrees
Step-by-step explanation:
y is a right angle and a is 30 degrees. this means that the supplementary engle of x is 45 plus 70 which is 115. 180-115 = 65 degrees.
Answer:
C
Step-by-step explanation:
To find the x-intercept, set y to equal 0 and solve for the equation 0=-2x-2.
2=-2x
x=-1
x-int: (-1,0)
This eliminates choices B and D.
To find the y-intercept, set x to equal 0 and solve for y.
y=-2(0)-2
y=-2
y-intercept:(0,-2)
The only choice with both these values is C.
x(f) is correct ok enjoy your qnswer
