You can ask and answer questions
a + b - c = 180
add both sides by c
a + b - c + c = 180 + c
simplifying
a + b = 180 + c
subtract 180 from both sides
a + b - 180 = 180 + c - 180
simplifying
a + b - 180 = c
Answer
c = a + b - 180
There are multiple ways to calculate slope.
Firstly, if you have a graph, it is rise over run. (Also y2-y1/x2-x1) this calculates the difference between 2 points on both their x and y axis, so they are the same.
Also from equation form.
Y=mx+b (the m is the slope)
ax+by= (-a/b is the slope)
Answer:
The number to be added to complete the square is (13/2)^2
But the solved value for x are:
x = 11.71 or -1.28
Step-by-step explanation:
x ^ 2 + 13x + 15 = 0
x^2 + 13x = -15
(The coefficient of x^2 is 1, hence needless diving through)
Add the square of half the coefficient of x to both sides
x^2 + 13x + (13/2)^2 = -15 + ( 13/2)^2
(x + 13/2)^2 = -15 + 169/4
(x + 13/2)^2 = 109/4
Take the square of both sides
x + 13/2 = +-10.44/ 2
x = 10.44/2 + 13 /2
x = 23.44/2
x = 11.71
OR
x = 10.44/2 - 13/2
x = -2.56/2
x = -1.28
Therefore x = 11.71 or -1.28
But the number to be added to complete the square is (13/2)^2
Lets keep learning, maths is fun
Answer:
11
Step-by-step explanation:
just flip the problem around 14+q=25
then do 25-14
Thats your Q