Answer:
Step-by-step explanation:
1)
Reduce the numbers with the greatest common factor : <em>3</em>
2)
Multiply the fractions.
3)
The answer is actually 37/36, or 1 1/36. The error was that when Mario multiplied 9 by 4, he only added the 4 to 4 instead of multiplying 4 by 4. <span />
A suitable proportion would be:
1 x
----- = ------------
50 230 ft
Cross-multiplying, 230 ft = 50 x. Then x = 4.6 ft. That's a big model, but still this answer is reasonable.
Answer: 3.25°C
Step-by-step explanation:
From the question, we are given the information that the mean temperature for the first 7 days in January was 3 °C. This means that the total temperature for the first 7 days in January was:
= 3°C × 7
= 21°C
We are also told that the temperature on the 8th day was 5°C. To calculate the the mean temperature for the first 8 days in January, we add the total temperature for the 8 days and then divide by 8.
The total temperature for the 8 days will be: = 21°C + 5°C = 26°C.
The mean temperature for the first 8 days in January will now be:
= 26°C/8
= 3.25°C
40% of 200 is 80 so 120 were sold at the door