Answer:
B - 34 years old
Step-by-step explanation:
First you have to multiply 42 times 3 to find the total age of the three people. Then multiply 40 times 4 to find the age of the four people in all. Subtract.
42 × 3 = 126
40 × 4 = 160
160 - 126 = 34
Answer:
-8y
Step-by-step explanation:
(5x-4y) - (5x+4y)
5x-4y - 5x-4y
(5x-5x)+(-4y-4y)
-8y
So the difference is -8y
Answer:
The emperical probability of being a plant with white flower is

The emperical probability of being a plant with purple flower is

Step-by-step explanation:
There are
- 639 plants with white flowers
- 280 plants with purple flowers
- 919 plants in total.
The <u>empirical probability</u> of an event is the ratio of the number of outcomes in which a specified event occurs to the total number of trials, not in a theoretical sample space but in an actual experiment.
The emperical probability of being a plant with white flower is

The emperical probability of being a plant with purple flower is

<u>4x²y²</u> <em>- 2y⁴</em> - 8xy³ + 9x³y <em>+ 6y⁴ </em>- 2xy³ - 3x⁴ <u>+ x²y²</u>
= <u>5x²y²</u> <em>+4y⁴</em> - 10xy³ + 9x³y - 3x⁴ <em>combined like terms</em>
= -3x⁴ + 9x³y + 5x²y² - 10xy³ + 4y⁴ <em>descending exponent order based on "x"</em>
If Julian wrote his list in descending order based on "y", then the order would be reversed.
Answer: 4y⁴
Volume of a right circular cone =

The h is the height and r is radius. It's about 234.57.