Answer:
b = 1
Step-by-step explanation:
-18+4b=7(4)+(7)-(6b)
-18+4b= 28 + (-42b)
4b-16=-42b+28
Add 42b to both sides.
4b-16+42b=-42b+28+42b
46b-18=28
Add 18 to both sides.
46b-18+18=28+18
46b=46
b= 46/46
b=1
Answer:
7/24
Step-by-step explanation:
Answer:
x=0,y=-3
Step-by-step explanation:
3x-5y=15 - equation(1)
x-4y=12 => x=12+4y -equation (2)
Replace equation (2) in equation (1)
3(12+4y)-5y=15
36+12y-5y=15
7y=15-36
7y= -21
y = -21/7
y=-3
If y=-3,then replace in equation (1) ; 3x -5(-3)=15
3x+15=15
3x=0
x=0
The y-value of the vertex is positive 3, as shown by the +3 on the right hand side of the equation, and the x-value is -1, from the (x+1)^2 (remember, when the number is inside the brackets, flip the sign) The vertex would be (-1, 3)
If you are looking for a rigorous answer (calculus), we must find the mininum point of the equation: f(x) = (x+1)^2 + 3 f
f'(x) = 2(x+1) = 2x + 2
2x + 2 = 0
x = -1
f(1) = (-1 + 1)^2 + 3
f(1) = 0 + 3 = 3
(-1, 3)
Answer:
Right angles = 90 if more its not a right angle
Step-by-step explanation:
