Explain how you know that the height of the triangle is 3 units long,

trasher [3.6K]

7 x 3 = 21 so it is 21 ft cm your welcome

5 0

3 years ago

Scrat [10]

400*3=1200
2*3=5
Answer is 6 gallons

7 0

4 years ago

777dan777 [17]

To find the average, add the cost of each book to get a total cost, then divide the total cost by the number of books purchased.

Total cost: 32 + 45 + 39 = 116

Average cost: 116 / 3 = 38.67

4 0

4 years ago

polet [3.4K]

It depends on how much the invitations cost at each shop.

5 0

3 years ago

yarga [219]

Answer:

(a) There are 20 ways to select both a council president and a vice president.

(b) There are 60 ways to select both a president, a vice president, and a secretary.

(c) There are 10 ways to select two members for the President’s Council.

Step-by-step explanation:

All the five engineering majors have one student representative at the Student Engineers Council at a California university.

(a)

Compute the number of ways to select both a council president and a vice president as follows:

As order of selection is important, the number of ways to select both a council president and a vice president is:

$^{5}P_{2}=\frac{5!}{(5-2)!}=20$

Thus, there are 20 ways to select both a council president and a vice president.

(b)

Compute the number of ways to select president, a vice president, and a secretary as follows:

Again as the order of selection is important, the number of ways to select both a president, a vice president, and a secretary is:

$^{5}P_{3}=\frac{5!}{(5-3)!}=60$

Thus, there are 60 ways to select both a president, a vice president, and a secretary.

(c)

Now for two members for the President's Council are to be selected.

As the order of selection is not important, two members can be selected in:

${5\choose 2}=\frac{5!}{(5-2)!\cdot\ 2!}=\frac{5!}{3!\ \times\ 2!}=10$

Thus, there are 10 ways to select two members for the President’s Council.

4 0

4 years ago