8m+27= 2m-3
take 2m and subtract it from 8m, this gives you 6m. now your equation is 6m+27=-3.
subtract 27 from -3, this will make it 6m=-30.
divide 30 by 6. this gives you your answer. m=-5, because -30 divided by 6 equals -5.
now to test it you can plug -5 into the equation in place of M. 8 times -5 equals -40, plus 27 equals -13. 2 times -5 equals -10 plus -3 equals -13.
The formula for Average speed = 
The car travels 80 km in 1 hour.
Then the car travels 90 km in 2 hours.
And finally the car travels 76 km in 1 hour
So the total distance covered by the car = 80 + 90 + 76 = 246 km
The total time taken to cover this distance = 1 + 2 + 1 = 4 hours.
So average speed = 
The average speed of the car is 61.5 km / h
Surface Area of the Prism = (6x4) = 2(5x4) + 2(1/2x6x4)
Surface Area of the Prism = 24 + 40 + 24
Surface Area of the Prism =88 cm²
------------------------------------------------------------------
Answer: Surface Area of the Prism =88 cm²
------------------------------------------------------------------
Answer:
∠A = 22°
Step-by-step explanation:
Given:

We take inverse of sine to find angle A.
So,
°
22.23° rounded to nearest whole degree is 22°.
∴
°.
Answer:
Coupon B
Step-by-step explanation:
Given



Required
Which coupon is better
From the question, we have:


Coupon B means that:



By comparison:
Coupon B gives him a better buy because: 