Answer:
A is the answer
Step-by-step explanation:
Answer:
its an rhombus
Step-by-step explanation:
Part A: Write equations to represent Company A and Company B's total charges for cleaning to certain carpet area in a day. Define the variable used in the equations. (4 points)
First we define the variables:
x = square foot of carpet area
y = price in $
We now write the equations for each company:
Company A:
y = 0.40x + 22
Company B:
y = 0.60x + 18
Answer:
Company A:
y = 0.40x + 22
Company B:
y = 0.60x + 18
Part B: Which company would charge less for cleaning? 500 square feet of carpet area? Justify your answer. (3 points)
We use the contracted equations in part A and substitute x = 500
We have then:
Company A:
y = 0.40 * (500) +22
y = 222 $
Company B:
y = 0.60x + 18
y = 0.60 * (500) +18
y = $ 318
Answer:
company A would charge less for cleaning 500 square feet of carpet area
Part C: How much money is saved by using the services of Company A instead of Company B for cleaning 200 square feet of carpet area? (3 points)
Company A:
y = 0.40 * (200) +22
y = $ 102
Company B:
y = 0.60x + 18
y = 0.60 * (200) +18
y = $ 138
Then,
138-102 = 36 $
Answer:
is saved about 36 $ by using the services of Company A instead of Company B for cleaning 200 square feet of carpet area
13,500 is the answer to you question
Given : (8 + i)(2 + 7i)
⇒ (8 × 2) + (8 × 7i) + (i × 2) + (i × 7i)
⇒ 16 + 56i + 2i + 7i²
We know that i² = -1
⇒ 16 + 58i + 7(-1)
⇒ 16 + 58i - 7
⇒ 9 + 58i