Answer:
Step-by-step explanation:
When it comes to mathematical concepts, those tiny numeral superscripts called exponents can intimidate even the most earnest student. One thing that helps stop the anxiety is understanding the importance of exponents in everyday math applications.
5 real-life uses:
- pH Scales
- Writing Large or Small Numbers
- Taking Measurements
- Richter Scales
- Finance
Answer:
5A. 80
6A. 84
8. 80
12. 130
17. 800
2. 10.5 cm
3. $102
4. 33 cars
5B. Gas: $55.44 Electricity: $76.56
6B. 85%, $17
Step-by-step explanation:
:) I think these are correct! They are in order from each page!
5A: 80*20%=16
6A: 84*50%=42
8: 80*75%=60
12: 130*40%=52
17: The printer costs $160, and 800*20%=160
2: 25% of 84 is 21 so there is 63 cm left. Divide by 6 and you get 10.5
3: 25% of 136 is 34 so he has 136-34 left, or 102
4: 17.5% of 240 is 42 so there are 198 other colors. Divide by 6 you get 33
5B: 42% of 132 is 55.44 if you subtract you get 76.56
6B: 100%-15%=85% and 85% of 20 is 17
Answer: The plane had traveled about 264 miles before turning back. The average speed was 230 mph
Step-by-step explanation: 230 - 10 = 220 speed outgoing
230+10 = 240 speed returning
Average speed (220+240)÷2= 460/2 =230 mph (needless to calculate!) Multiplied by total time 2.3 hours = 529 miles total distance.
Traveling the entire distance at 220mph would take about 2.4 hours. Traveling the entire distance at 240mph would take about 2.2 hours, a difference of .20 hours. Cut those times in half:
Traveling at 220mph for 1.2 hours would cover about 264 miles.
Traveling at 240mph for 1.1 hours would cover about 264 miles.
It adds up to 528 miles. The plane can't turn instantly, so figure the turn took the missing mile!
