Answer:
C. 70 = 10x
E. 15x = 105
Step-by-step explanation:
x = 7
Using method of elimination;
A. X + 7 = 17
Substituting the value of x;
7 + 7 ≠ 17 (Incorrect option)
B. 7 = 17 - x
Substituting the value of x;
7 ≠ 17 - 7 (Incorrect option)
C. 70 = 10x
Substituting the value of x;
70 = 10 * 7 (Correct option)
D. X/35 = 5
Substituting the value of x;
7 / 35 ≠ 5 (Incorrect option)
E. 15x = 105
Substituting the value of x;
15 * 7 = 105 (Correct option)
Answer:
x = StartFraction 2 Over 3 EndFraction and x = StartFraction negative 2 Over 3 EndFraction.
Step-by-step explanation:
We are given a quadratic equation of single variable x as 
.
There is no doubt that as the equation is of two degrees so, it will have two solutions.
Now,
⇒ 
⇒ 
and 
Therefore, the solution will be x = StartFraction 2 Over 3 EndFraction and x = StartFraction negative 2 Over 3 EndFraction. (Answer)
Decimal is 0.12 and fraction is 12/100
Trial and error
y=-4x+4
or assuming that it is a line
y=mx+b
m=slope
b=yint
slope=(y2-y1)/(x2-x1)
(0,4) and (1,0)
(0-4)/(1-0)=-4/1=-4
y=-4x+b
sub point
4=-4(0)+b
4=0+b
4=b
y=-4x+4
