How many ways can a president and vice president be chosen from a group of 20

190 ways

Step-by-step explanation:

they can be chosen in 20 C 2 ways

380

Step-by-step explanation:

We have 20 choices for president. After that person is picked, there are 19 people to pick from for VP. There are 20*19 = 380 different permutations. Order matters because the two office positions are different.

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A slightly longer alternative is to use the nPr formula

where n = 20 is the number of people to pick from at the start, and r = 2 is the number of slots to fill. The exclamation marks refer to factorial notation.

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions