75 +10n = 15n
75 = 5n
15 = n
Therefore 15 classes
48 x 2/3 = 32. For dilation just multiply each side by the dilation factor.
This question is worded weirdly, but it means:
8 / (5/2)
= 8 * (2/5)
= 16/5
The tenths place would be the digit right after the decimal point, and we want to round 479.16 to the nearest tenths.
The number in the tenths place is 1. Now we have to decide if we're going to round up or down
- If the next digit is greater than or equal to 5, we round up (add 1 to the digit); if it isn't, then we round down (the digit stays the same).
The digit after the tenths place is "6", which is greater than 5. Thus, the "1" is rounded up to a "2"
Answer: 479.16 to the nearest tenths is 479.2.
Let me know if you need any clarifications, thanks!
~ Padoru
