Answer: Total cost= 7n + 5
Step-by-step explanation:
7 is the M (money per every candle) and 5 is the B (additional fee for every order)
Answer: k < 3.5
explanation: < means less than and > means more than and = means equal to so k < (less than) 3.5
Dimensions:
(x-3)
(x+2)
Perimater = sum of sides:
Perimeter = 14 in
Replacing:
14 in = 2 (x-3) + 2 (x+2)
Solve for x :
14 = 2x-6 + 2x + 4
combine like terms:
14 = 2x+2x-6+4
14 = 4x - 2
14+2 = 4x
16 = 4x
16/4 = x
x = 4
Dimensions:
(x-3) = 4-3 = 1
(x+2) = 4 + 2 = 6
Answer:
yes you are right it would be cylinder b
Step-by-step explanation:
Answer:
He failed to check for extraneous solutions
Step-by-step explanation:
sqrt(x+6) -4 =x
Add 4 to each side
sqrt(x+6) -4+4 =x+4
sqrt(x+6) =x+4
Sqaure each side
(sqrt(x+6))^2 =(x+4)^2
x+6 = x^2 +8x+16
Subtract 6 from each side
x = x^2 +8x +10
Subtract x from each side
0 = x^2 +7x +10
Factor
0 = (x+5) (x+2)
Using the zero product property
x=-5 x=-2
Check the solutions
sqrt(-5+6) -4 =-5
sqrt(1) -4 = -5
1-4 =-5
-3 does not equal -5 not a solution
sqrt(-2+6) -4 =-2
sqrt(4) -4 = -2
2-4 =-2 is a solution