Answer:
−27x2
Step-by-step explanation:
It's -27x to the second power so the small 2 at the end
Answer:
6x + 8y
Step-by-step explanation:
10x + 7y - 4x + y
combine 10x and -4x to get 6x
6x +7y + y
combine 7y and y to get 8y
6x + 8y
Answer: 280 minutes
Step-by-step explanation:
Given
Expression is
Apply distributive law i.e.
Thus, theo dog took 280 minutes each week
Answer:
Cost to pave the road = $4257
Step-by-step explanation:
Area of the pavement = Area of the outer circle - Area of the internal circle
Area of the outer circle = πr²
= π(55)²
= 3025π square feet
Area of the inner circle = π(33)²
= 1089π square feet
Area of the pavement = 3025π - 1089π
= 1936π
= 6082.12 square feet
Cost of pavement = $0.70 per square feet
Therefore, cost of 6082.12 square feet = 6082.12 × 0.70
= 4257.49
≈ $4257
Cost to pave the road = $4257