What is the common ratio for the geometric sequence
2. 4.8. 16, ...

Answers

Answer 1

Answer:

Answer:

r = 2

Step-by-step explanation:

$a_n-\text{geometric sequence}\n\na_1,\ a_2,\ a_3,\ ...,\ a_n-\text{terms of a geometric sequence}\n\nr=(a_2)/(a_1)=(a_3)/(a_2)=(a_4)/(a_3)=\hdots=(a_n)/(a_(n-1))-\text{common ratio}\n\n\text{We have:}\ a_1=2,\ a_2=4,\ a_3=8,\ a_4=16,\ ...\n\n\text{The common ratio:}\n\nr=(4)/(2)=(8)/(4)=(16)/(8)=2$

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31,50 is 42% os what number

Answers

$(31,50)/(x)=(42)/(100)$

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.

$(31.50)/(x) = (42)/(100)\n\ncross\ multiply\n\n31.50*100=3150\n42* x=42x\n\n3150=42x\nx=75$
Your answer is 75.

the price of a tshirt is 50$ if you buy 4 shirts you will get .10 discount how much do you have to pay if you buy 8 shirts

Answers

If you buy 4 shirts you get

50 × .10 = 5

5 dollars off. So you pay

50 - 5 = $45

If you buy 8 shirts (4 shirts twice) it will be

45 × 2 = $90

The answer is 360 dollars

Telly’s salary increased from $60 to $80 a week. What percent of increase in salary was this?

Answers

The change is $20. You just need to calculate that how percent of the original salary($60) is $20.

20/60*100 = 33.3%

Give an example of linear equation that is parrell to the y-axis

Answers

Answer: x = 5

You can pick any number you want, as long as it's not zero. The equation x = 5 has all points on this line that have an x coordinate of 5. The y coordinate can be anything you want

Example points on this line are: (5,1) and (5,2)

Note: this is a vertical line with the slope undefined. There is no y intercept. This is not a function because it fails the vertical line test.

What is the decimal representation of 5/11