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Dafna1 [17]
3 years ago
12

Karen Johnson rode her 27” bicycle to the store and back. The store is 1 mile from Johnson’s Home. Approximately how many rotati

ons did Johnson’s bicycle wheels make in going to the store and back
Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0
In about a quarter of a mile a 27” bike wheel would turn 224 times so 224x8 (for the mile there and the mile back) the bike wheel will have turned 1,792 times
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Calculate the interest in a year
Multiply the annual percentage of interest by the investment to find the interest.
interest in a year = 2% × 1,000
interest in a year = 0.02 × 1,000
interest in a year = 20
The annual interest is $20

Calculate the interest after 10 years
Multiply the annual interest by 10
interest 10 years = 20 × 10
interest 10 years = 200
The sum of interest after 10 years is $200

Find total investment
investment = first investment + interest in 10 years
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investment = 1,200

The investment will be worth $1,200 in 10 years
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3 years ago
Can someone please explain how to do these?
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Answer:

<u>First question answer:</u> The limit is 69

<u>Second question answer:</u> The limit is 5


Step-by-step explanation:

For the first limit, plug in x=8 in the expression (9x-3), that's the answer for linear equations and limits.

So we have:

9x-3\\9(8)-3\\72-3\\69

The answer is 69


For the second limit, if we do same thing as the first, we will get division by 0. Also indeterminate form, 0 divided by 0. Thus we would think that the limit does not exist. But if we do some algebra, we can easily simplify it and thus plug in the value x=1 into the simplified expression to get the correct answer. Shown below:

\frac{x^2+8x-9}{x^2-1}\\\frac{(x+9)(x-1)}{(x-1)(x+1)}\\\frac{x+9}{x+1}

<em>Now putting 1 in x gives us the limit:</em>

\frac{x+9}{x+1}\\\frac{1+9}{1+1}=\frac{10}{2}=5

So the answer is 5

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Answer: The value of John's silver collection changes at a faster rate than the value of John's baseball card collection.

V = 500(1.05)2t + 600(0.95)t

Step-by-step explanation:

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