T=d/r
plug in your numbers and divide then you have your answer.
No. You can actually solve this question without doing any math. Her only score that is above a 90 is 93, so it will be brought down lower than a 90 very easily by the 77 and the 82.
Answer:
30/100 X $60= $18.
The original price will be $60 + $18 = $78.
<u>Scale - Convert to meters and reduced it to 1 cm:</u>
3 cm : 1000 cm | GIven
3 cm : 10m | Convert 1000cm to 10m
1 cm: 10/3 m | Find 1 cm
<u>Convert the dimensions to the actual:
</u>
7.5 cm = 7.5 x 10/3 = 25m | Convert 7.5cm on map to actual distance
15 cm = 15 x 10/3 = 50m | Convert 15m on map to actual distance²
<u>Find area of the actual pool:</u>
Area = 25 x 50 = 1250 m² | Use the formula Area = Length x Width
Answer: 1250 m²
49a²+14a18b+81b²
When you square a binomial, you have to multiply the entire thing by itself, so in this case it should be: (7a+9b) (7a+9b).
Now you have to use FOIL (or First, Outside, Inside, Last) to simplify the equation. When you set up FOIL, it should look like this:
7a×7a, 7a×9b, 7a×9b, 9b×9b. Simplify this and you should get 49a²+7a9b+7a9b+81b². Add like terms and you get 49a²+14a18b+81b².
