Answer:
I know you could easily solve this just looking at it.
But if you want the algebraic solution:
x + x^2 = 30
x^2 + x -30 = 0
a = 1
b = 1
c = -30
Using the quadratic formula:
x = [ -b +- sqr root (b^2 - 4ac) ] / 2a
x = [-1 +- sqr root (1 - 4 * 1 -30) ] / 2*1
x = [-1 +- sqr root (1 + 120) ] / 2
x = -1 +- sqr root (121) / 2
x1 = (-1 + 11) / 2 = 10 / 2 = 5
x2 = (-1 -11) / 2 = -12 / 2 = -6
Answers are 5 and -6
5 + 5^2 = 30
-6 + (-6)^2 = 30
-6 +36 = 30
Step-by-step explanation:
X/6 > 3
we don't know what x is so we must put a multiple of 6
12/6 > 3
we divide 12 by 6 and we get 2. We need a higher number
18/6 > 3
we divide 18 by 6 and we get 3. We need a higher number
24/6 > 3
we divide 24 by 6 and we get 4. Perfect
Answer is 4
Answer:
x = -3
Step-by-step explanation:
The graph is symmetrical about the vertical line through its vertex:
x = -3
Answer:
Rational and whole numbers
Step-by-step explanation:
7x7=49 which is a whole number which automatically makes it rational!
Answer:
4x+11
Step-by-step explanation:
Assuming you mean g(x)=-6X-7
f(x)-g(x)
Replace f(x) with-2x+4 and g(x) with -6x-7
-2x+4 - (-6x-7)
Distribute the minus sign
-2x+4+6x+7
Combine like terms
-2x+6x+4+7
4x+11
