4000 (4x10^3) times 400 (4x10^2) is equal to 16x10^5 ( 1,600,000)
Answer:
3b - 
b
Step-by-step explanation:
Let the number be "b"
So the expression would be:
3b - b
Exchange rate refers value of a currency in another.The cost of the decorative mug is 83.98 China Yuan.
<h3>What is the exchange rate?</h3>
The term exchange rate has to do with the value of a currency in another currency. Given the fact that international trade is the mainstay of the global economy, it is important that one currency should be converted to another for the purpose of the ease of doing business.
The dollar is often the international currency for trade. Its us always necessary to convert the dollar into the local currency of the country where the business is done using the correct exchange rate.
Now If I want to convert the cost of the decorative mug to China Yuan;
I already know that;
1 US dollar = 6.4651 China Yuan
12.99 US dollar = 12.99 US dollar * 6.4651 China Yuan/1 US dollar
= 83.98 China Yuan
Hence, the cost of the decorative mug is 83.98 China Yuan.
Learn more about exchange rate:brainly.com/question/22996931
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180 seconds is 3 minutes. If you divide 156 by 3, you will get 52. If you are looking for 2 minutes, you have to multiply 52 by 2. The answer is 104 revolutions in 2 minutes.
Answer:
The expression for her balance is "B(t) = -75*t + 1500". It'll take her 20 months to pay off the loan.
Step-by-step explanation:
We are looking for a function that has the following points:
B(0) = 1500
B(4) = 1200
B(7) = 975
Between B(4) and B(7), there was a variation of 3 months and a variation of -225 on her balance, thefore for each month that passed there was a variation of -75. Thefore, the expression for her ballance is:
B(t) = -75*t + 1500
To check if this expression is valid, we will apply the values provided on the problem:
B(0) = -75*0 + 1500 = 1500 (valid)
B(4) = -75*4 + 1500 = -300 + 1500 = 1200 (valid)
B(7) = -75*7 + 1500 = -525 + 1500 = 975 (valid)
When she pays of her loan, B(t) = 0, so we need to solve for t as shown below:
B(t) = -75*t + 1500 = 0
-75*t + 1500 = 0
75*t = 1500
t = 1500 / 75 = 20 months
It'll take her 20 months to pay the loan.
