Which sequences are geometric? Check all that apply. –2, –4, –6, –8, –10, … 16, –8, 4, –2, 1 –15, –18, –21.6, –25.92, –31.104, …
PIT_PIT [3949]
16, -8, 4, -2, 1
-15, -18, -21.6, -25.92, -31.104...
625, 125, 25, 5, 1
Brand X costs: $4.50
Brand Y costs: $3.50
Total spent by Christopher: $49.50
Equation: 4.50x + 3.50y = 49.50
I'm unsure how to solve this equation, but it appears to be the correct one
Answer: Charlotte completed the word search in 16 minutes.
Step-by-step explanation:
Frank took 32 minutes to finish the word search.
Terrence completed the word search in three-quarters of the time Frank used, which is:
3/4 × 32 = 24 minutes.
Charlotte finished it in two-thirds the time Terrence took, leading to:
2/3 × 24 = 16 minutes for Charlotte.
Detailed explanation:
Work completed by Gardner each hour = 1 / 5
Combined work done by Gardner and assistant each hour = 1 / 4
Work done by the helper per hour
= 1 / 4 - 1 / 5
= 1 / 20
Time required for helper to finish the job:
= 20 hours
