Angle A and Angle B are complementary angles. The measure of angle A is twice the measure of angle b. Write an equation to represent the complementary angle relationship between Angle A and Angle B. Use the equation to find the measure of Angle A and Angle B

Step-by-step explanation:

“Write an equation to represent the complementary angle relationship between angle A and angle B”

A+B = 90°

“angle A is twice the measure of angle B”

A = 2B

substitution

(2B)+B = 90°

B = 30°

A = 2B = 60°

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.