Answer:
x= 2597/335
Step-by-step explanation:
collect like terms
2.4x-9.1x= -6.7x
-39.44-12.5 = -51.94
-6.7x=-51.94
divide both sides by -6.7
x= 2597/335
Answer:
x=5
Step-by-step explanation:
x +2,2x,2x+3 are in A.P. ⇒(2x)−(x+2)=(2x+3)−(2x) 2x−x−2=2x+3−2x x−2=3 So the answer is: x=5
Substituting, we have
... f(x+4) = (x+4)² + 8(x+4) +7
... = x² +8x +16 +8x +32 +7
... = x² + 16x + 55
Subtracting the original, we have
... f(x+4) - f(x) = (x² +16x +55) -(x² +8x +7)
... f(x+4) - f(x) = 8x +48
Answer:
Yes. When a function is linear, it means that it will always be a straight line. For this to hold true, the slope must always be constant.
Step-by-step explanation:
Answer: x = 7, y = -3
Step-by-step explanation:
2x - y = 17
x - y = 10 —> x = y + 10
2(y + 10) - y = 17
2y + 20 - y = 17
y + 20 = 17
-20 -20
y = -3
x = y + 10
x = (-3) + 10
x = 7