Ask question

Ask question

All categories

3 years ago

7

How do you do these questions?

1 answer:

Dmitry [639]3 years ago

7 0

Step-by-step explanation:

2. The number of ways to choose 2 people from a group of 4 (where the order doesn't matter) is ₄C₂.

The number of ways to choose 2 people from a group of 3 (not including Jason) is ₃C₂.

So the probability is ₃C₂ / ₄C₂ = 3/6 = 1/2.

3. If Damian has already been selected, then the probability that J.T. will be selected from the remaining 8 is 1/8.

4. This question is oddly worded. The sales and marketing teams will be equally represented <em>on average</em>. If many pairs are selected and replaced, sales will be selected 4/9 of the time, and marketing will be selected 5/9 of the time. However, for any particular pair, the representation will not be proportional.

You might be interested in

Alvin is 7 years younger than Elgas. The sum of their ages is 63. What is Elgas age?

Elden [556K]

Answer:

Elgas is 35.

Step-by-step explanation:

Let's set up an equation.

Alvin is 7 years younger than Elgas.

A = E - 7

The sum of their ages is 63.

A + E = 63

Let's use substitution.

Plug in the first equation of A into the second equation.

A + E = 63

(E - 7) + E = 63

Combine like terms.

2E - 7 = 63

Add 7 to both sides.

2E = 70

Divide both sides by 2.

E = 35

Elgas is 35.

Hope this helps!

6 0

3 years ago

5. Which of the following is not shown in the

soldi70 [24.7K]

C.
(I’m pretty sure but if I’m wrong I apologize in advance)

8 0

3 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION???

tangare [24]

Answer:

The complete answer is explained below.

Step-by-step explanation:

The problem is demanding to simply determine the number of years each color light would last.

We know the following information from the question:

As it is clear that a red light remains TURNED ON 50% of the time.
Green remains TURNED ON 42% of the time
Yellow remains TURNED ON 8% of the time.

Also the bulbs for each color are LED and are designed to last 100,000 hours. So, each light does last 100,000 hours.

lets make conversions

As

$1\:day\:=\:24\:hours$

$1\:year\:=\:365\:days$

Dividing $100,000$ hours by $24$ hours would bring $4166.67$ days

Dividing $4166.67$ days by $365$ days would bring $11.4$ years, meaning 11 years and 4 months.

Keywords: light, conversion, day, hours

Learn more about conversions from brainly.com/question/402716

#learnwithBrainly

8 0

3 years ago

kodGreya [7K]

Answer:

99

Step-by-step explanation: so chicken

5 0

4 years ago

. Roger uses his truck to plow parking lots when it snows. He wants to find a model to predict the number of service calls he ca

expeople1 [14]

Answer:

4.1 calls

Step-by-step explanation:

The number of calls (c) that Roger expects to get as a function of how many inches of snow fall (s), is described by the following linear model:

$c(s)=0.8s+0.29$

Therefore, when s = 4.7 inches, the number of service calls that Roger expects is:

$c(4.7)=0.8*4.7+0.29\\c(4.7)=4.05\ calls$

Rounding to the nearest tenth, Roger will get about 4.1 calls.

6 0

4 years ago