Yes, the two ratios are proportional to each other. The multiplier from the first ratio to the second ratio is 3. For example, 4.2 x 3 = 12.6 and 1.5 x 3 = 4.5. Basically, to figure out if two ratios are proportional to each other, just divide the smaller number into the bigger number for both corresponding numbers. If they're the same ---> Proportional. If they're not the same ---> Not Proportional
The formula to find the discriminant equals D = b^2-4ac.
(Quadratic equations have the formula ax^2+bx+c. A = -1, B = +4, C = -2.)
D = 4^2-4(-1)(-2). 8-8 = 0.
0 = 1 solution
-D = 0 solutions
+D = 2 solutions
The discriminant equals 0, also establishing that if you were asked to find the solutions, there would only be one.
Hey there!
Answer:
x = 195
Explanation:
So here is your equation:
90 = -105 + x
First, you simplify both sides of the equation:
90 = x - 105
Then, you will have to turn it around:
x - 105 = 90
So after you do that, you will have to Add the 105 to both sides:
x - 105 + 105 = 90 + 105
x = 195
So 195 is your answer.
Hope this helps! :D
Answer:
y=-3x+5
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-4-(-1))/(3-2)
m=(-4+1)/1
m=-3/1
m=-3
y-y1=m(x-x1)
y-(-1)=-3(x-2)
y+1=-3x+6
y=-3x+6-1
y=-3x+5
