Answer:
No
Step-by-step explanation:
These expressions are not equal. By combining terms the expression on the left is 11a and the expression on the right is 10a.
Domain: Anything at all. All numbers and sub-divisions of a number line. - ∞ < x < ∞
The range is much harder. You could complete the square to get the range, which I will do after we get the answer. The simplest way to get the smallest part of the range is to graph the quadratic. The lowest point is at (-2, -25) so the range is
Range: -25 ≤ y < ∞
Completing the square.
y = x^2 + 4x - 21
y = (x^2 + 4x) - 21
y = (x^2 + 4x + (4/2)^2 ) - 21 - (4/2)^2
y = (x^2 + 4x + 4) - 21 - 4
y = (x + 2)^2 - 25
The minimum point is (- 2,-25) just as the graph predicted.
<span>y-2x=-6 and 5x-y=9
step 1: isolate y in the first equation
y = 2x - 6
step 2: substitute the y value on the 2th equation:
5x-(2x-6)=9
step 3: solve the present equation:
5x - 2x + 6 = 9
3x = 9-6
3x = 3
x = 1
step 4: get the y value by replacing the value of x in </span>y = 2x - 6:
<span>
y = 2*1 - 6
y = 2 - 6
y = -4
S={1, -4}
</span>
Answer:
13x-4
Step-by-step explanation:
MO=7x-4
NO=6x
MO+NO=?
7x-4+6x=13x-4
0.69 can be expressed as a fraction.
69 / 100
The fraction 69 / 100 cannot be simplified anymore. So that's already the simplest form.
So the fraction is 69 / 100.