B = 18 because 67 - 49 = -18
-18 =-b
Divide by negative 1 because you can't have a negative variable in your answer.
Length = 7/2 x 18 = 63 inches
Width= 7/2 x 6 = 21 inches
Answer: The dimensions are 63 inches by 21 inches.
I'm assuming that you meant to write 'two 100-w per hour light bulbs used a total of 400w. how many hours did the bulbs run'
so each used 100w per hour and there are 2 light bulbs so in 1 hour 200w is used
200wh times x hour=200wx=400w
divide both sides by 200w
x=2
they ran for 2 hours
Answer:
- 5/11
Step-by-step explanation:
