Answer:
1 ± √47
Step-by-step explanation:
Combine like terms in 2x^2 +3 x-7 =x^2 +5x +39:
2x^2 - x^2 = x^2 (first term);
3x - 5x = -2x (second term);
-7 - 39 = -46 (third term)
Then we have, all on the left side, x^2 - 2x - 46, which is a quadratic equation. Here the coefficients are a = 1, b = -2 and c = -46.
Then the discriminant, b^2 - 4ac, is:
(-2)^2 - 4(1)(-46) = 4 + 184.
The roots are:
-(-2) ±√188 2 ± √4√47
------------------- = -------------------
2 2
= 1 ± √47 (last of the answer choices)
=
x = ------------------
Answer:
There is no slope, beacuse there is not a shown X
Step-by-step explanation:
Answer:
y=3x+1
Step-by-step explanation:
Answer:
Equation: 10x-12=6x-6
X: 3/2 or .5
Perimeter of square and triangle are both 3.
Step-by-step explanation:
Square:
4(2.5x-3) {The four represents the amount of sides}=
10x-12
Triangle:
3(2x-2)=
6x-6
Since they have the same perimeter the equation is
10x-12=6x-6
10x-6x=12-6
4x=6
x=1.5
Square pt 2:
4(2.5(3/2)-3)=
4(3.75-3)=
4(0.75)=
3
Triangle pt 2:
3(2(3/2)-2)=
3(3-2)=
3(1)=
3
