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Zolol [24]
3 years ago
8

Which sequence has a common ratio of 2? a{20, 40, 80, 160, 320, 640, …} b{20, 10, 5, 2.5, 1.25, 0.625, …} c{20, 15, 10, 5, 0, -5

, …} d{20, 4, 0.80, 0.16, 0.032, 0.0064, …}
Mathematics
1 answer:
Elis [28]3 years ago
4 0

Answer:

A

Step-by-step explanation:

40/20=2

80/40=2

Therefore the common ration is 2

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If I can travel 280 miles in 4.5 hours how many hours will it take me to travel 500 miles round to the nearest hundred
Lelu [443]

Answer: 8.01

Step-by-step explanation:

Speed = distance/time = 280/4.5 = 62.44mph

Time = distance/speed = 500/62.44 = 8.0071 hrs

6 0
2 years ago
Can someone help me with this??
dusya [7]

Answer:

Carlos and Pamela drove 120 miles on the first day, 240 miles on the second day, and 290 miles on the third day.

Step-by-step explanation:

Let x be the number of miles driven on the first day.

Then they drove twice as many miles, or 2x on the second day

and 50 miles more than the second day's, so 2x + 50

The total is 650 across all three days, so we'll take the sum.

x + 2x + (2x + 50) = 650

Combine like terms on the left

5x + 50 = 650

Subtract 50 on both sides

5x = 600

Divide by 5 on both sides

x = 120

Check work:

120 + 2(120) + 2(120) + 50 = 650

120 + 240 + 240 + 50 = 650

600 + 50 = 650

650 = 650

So they drove 120 miles on the first day

2*120 = 240 miles on the second day

and 2*120 + 50 = 240 + 50 = 290 miles on the third day

4 0
2 years ago
:( help me please,,, if ur good at mean, median mode and range
Verdich [7]

Answer:

ill help when you give the problem lol

Step-by-step explanation:

4 0
2 years ago
2X minus one equals five
stepan [7]
2x-1=5
2(3)-1=5
6-1=5
5=5 

x=3
7 0
2 years ago
Read 2 more answers
Please help please help
koban [17]
35. is c : square root of 64 is 8 and the square root of 8 can be simplifed to 4 x 2, square root of 4 is 2

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4 0
2 years ago
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