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Likurg_2 [28]
3 years ago
5

Suppose 20% of the students on campus smoke. you select two students at random. in what percentage of samples will both students

be smokers?
Mathematics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

4%

Step-by-step explanation:

The probability that two smoke is the product of the probabilities that each smokes, provided the students are selected independently.

... 0.20 × 0.20 = 0.0400 = 4%

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Given the net with dimensions below, find the surface area of the shape.
Colt1911 [192]

Answer:

136 cm²

Step-by-step explanation:

I'm going to split the net into:

2x          7 cm by 2 cm rectangles

2x          6 cm by 7 cm rectangles

2x          6 cm by 2 cm rectangles

The 2x means there's 2 of them.

Let's find the area of the 2x 7 cm by 2 cm rectangles:

2*7*2=

4*7=

28 cm²

Let's find the area of the 2x 6 cm by 7 cm rectangles:

2*6*7=

2*42=

84 cm²

Let's find the area of the 2x 6 cm by 2 cm rectangles:

2*6*2=

12*2=

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Adding all these areas together gives us the surface area of the net:

28+84+24=136 cm²

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3 years ago
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Sladkaya [172]

Answer: D

Step-by-step explanation: D

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Schach [20]
12 is the least common multiple
5 0
3 years ago
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solve the equation for x. show each step of the solution. name the justification for each step of the solution 9/2 (8-x) +36=102
Karo-lina-s [1.5K]

1. You have the following equation:

\frac{9}{2}(8-x)+36=102-\frac{5}{2} (3x+24)

2. First, you must apply the Distributive property:

\frac{72}{2}-\frac{9x}{2}+36=102-\frac{15x}{2}-\frac{120}{2}

3. Simplify:

36}-\frac{9x}{2}+36=102-\frac{15x}{2}-60

3. Add the like terms:

-\frac{9x}{2}+\frac{15x}{2}=102-60-36-36\\ 3x=-30

4. Solve for x:

x=-\frac{30}{3} \\ x=-10

Therefore, the answer is: x=-10

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The selling price of a house dropped from $250,000 to $210,000 over a period of 5 years.
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