Answer: Option B
B. 
Step-by-step explanation:
We have the following equations:
(1)
(2)
Let us call "a" the coefficient of the variable x in the first equation and call "b" the coefficient of the variable x in the second equation.
Then we must multiply the number "a" by a value z such that when adding 
the result is zero.
So
We solve the equation for z
The first equation must be multiplied by a value of
Hello!
The formula for the area of a sector can be written as follows:
Area =
(R)
In the above formula, “r” represents the
radius while “R” represents
the radian measure of a sector. The radius is given to us in the image above as 10 inches. However, we still need the radian measure of the two sectors. To find this measure, we can use the following conversion:
1 degree =
radians
Because the two sectors have a given measure of 72 degrees, we need to multiply both sides of the above conversion by 72:
72 degrees =
Reduce the fraction on the right side of the equation:
72 degrees =
We now have the radian measure of both sectors. Now simply insert this and any other known values into the “area of a sector” formula above:
Area =
(
)
Simplify the right side of the equation to get the following answer:
Area = 20 pi
We have now proven that
the area of one sector is equal to 20 pi.If, however, you need the combined area of the two identical sectors, simply multiply the proven area by 2 to get a total area of
40 pi.I hope this helps!
Answer:
β = 110
Step-by-step explanation:
Here, we want to find the value of beta
From the diagram;
70 + β = 180
The reason for this is that the sum of angles on a straight line is 180
Thus, we have that
β = 180-70
β = 110
