Option (A) is correct, the conjugate of denominator will be √10+2
Answer:
The answer is x=-17/3
Step-by-step explanation:
The Steps:
-8 + 5(1 + x) = 2x - 20
-8 + 5 + 5x = 2x - 20
-3 + 5x = 2x - 20
-3 + 3x = -20
3x = -17
x = -17/3
Answer:
50,020 revs to nearest rev.
Step-by-step explanation:
r = 1/2 * diameter
Circumference of the wheel = 2 pi r
= 2 * pi * 1/2 * 77
= 77pi cms
1 km = 1000 * 100 cms so
The number of revolutions = (121 * 100 * 1000) / 77pi
= 50,020 revs to nearest rev.
Answer:
f
−
1
(
x
)
=
9
x
−
18
Explanation:
To find the inverse or
f
−
1
(
x
) of a function we solve the equation for x
So in this example, we can start by subtracting
2 from both sides: y
−
2
=
1
9
x
+
2
−
2
Next we multiply
9 to each side to isolate the variable x 9
(
y
−
2
)
=
1
x
9
⋅
9
9
y
−
18
=
x
Since the function of a line is written in terms of y we can simply switch x and y and rewrite the equation to get: y
=
9
x−
18 or f
−
1
(
x
)
=
9
x
−
18
For this case we have that the variable "s" represents the quantity of slices for each pizza.
In total, 9 pizzas were purchased and 72 slices were obtained. Then we can raise the following equation:
To know the amount of slices of each pizza we clear "s":
Answer: