16a.) π
16b.) = 7 ÷ 15
Put (7 ÷ 15) in your calculater to get 0.4666667
That multiplied by 100 and rounded to the nearest whole percent is
47%
17a.) 24 + 16 + 14 = 54
17b.) 8 ÷ 27 = 0.296
0.296 × 100 = 29.6
Rounded to the nearest whole number is 27%
Answer:
2.25 (or ) g/mL
<u>Skills needed: Density</u>
Step-by-step explanation:
1) Briefly, let's cover what density is:
- It is
- Measures the mass per unit of volume
- In this situation the formula for density is:
---> is the final mass
---> is the initial mass
---> is the final volume
---> is the initial volume
2) In this case, we start out with a mass of 180 grams as stated in the problem, and also 50 mL of water initially.
This means that:
- is 180 g
- is 50 mL
3) Also, we end up with 270 g in mass, and 90 mL of water finally.
- is 270g
- is 90 mL
4) We can find density by substitute given the values above:
5) Our answer is 2.25 g/mL (since mass is grams (g), and volume is milliliters (mL) in the problem above).
According to the problem, the length is 2 feet more than its width, which is expressed as the following function
If the width is x, then the length is x+2.
We can express the following function for the area
Let's replace the width x = 11 ft.
Where x represents the width.