A book club has 10 members.How many ways can they choose a president, vice president, and secretary from among the members?

2 answers:

8 0

<span>A.
30

B.
120

C.
720

D.
100</span> <span> 720 possible combinations if each post is held by one person.
90 possible combinations if one person can have two positions.
10 possible combinations if one person can hold all three.
</span>

igor_vitrenko [27]3 years ago

7 0

Assuming that each person holds 1 positiion

slot metho
3 slots (pres, vice, sec)
1st slot:10 optoins
2nd slot:9 ooptions(1 gone to 1st slot)
3rd slot:8 options (1 gone to 1st and 1 to 2nd)

multiply
10*9*8=720

720 ways

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Help please with this math question

Svetllana [295]

If the new technology innovation improves the production by 10%, they are increasing the amount of cars made by 10%.

Originally, 120 cars were made per day.

10% of 120 is 12.

Since the amount of cars made per day was increased by 12, we can add 12 to 120 to get 132 cars made per day (as the new unit rate).

The question asks how many cars can be produced in 5 days (after the car production increase). We can get the answer by multiplying our new daily amount of cars by 5: 132 times 5.

132 times 5 = 660

So, 660 cars can be produced in the factory in 5 days.

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1 year ago

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Nadya [2.5K]

Answer:

$\text{D. }b^2-4ac>0$

Step-by-step explanation:

The equation $b^2-4ac$ represents the discriminant of a quadratic. It is the part taken from under the radical in the quadratic formula.

For any quadratic:

If the discriminant is positive, or greater than 0, the quadratic has two solutions

If the discriminant is equal to 0, the quadratic has one distinct real solution (the solution is repeated).

If the discriminant is negative, or less than 0, the quadratic has zero solutions

In the graph, we see that the equation intersects the x-axis at two distinct points. Therefore, the quadratic has two solutions and the discriminant must be positive. Thus, we have $b^2-4ac>0$ .