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11111nata11111 [884]
3 years ago
7

professor must randomly select 4 students to participate in a mock debate. There are 18 students in his class. In how many diffe

rent ways can these students be selected, if the order of selection does not matter?
Mathematics
1 answer:
Tju [1.3M]3 years ago
5 0
    18 divided by 4 gives 4r2 so we could do 32 different ways

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4 0
3 years ago
224 is what % of 640?
lakkis [162]
There is a percent formula for all of these types of percent problems.

It is : is/of = %/100

224 is what % of 640
is = 224
of = 640
% = x
now just sub
224/640 = x/100
cross multiply because this is a proportion
(640)(x) = (224)(100)
640x = 22400
x = 22400/640
x = 35......so 224 is 35% of 640


5 0
3 years ago
Read 2 more answers
What does ƒ(x) = 3x − 1, for ƒ(-2) mean?
zzz [600]

Answer:

C. It means to input a -2 into the function to find the output.

Step-by-step explanation:

f(x) means to the function of x. The question is asking you to input -2 for x and find the answer.

6 0
2 years ago
Write f(x) in a non-factored way from polynomial equation f(x)=(x+2)(-x+3)(x-2)?
Lelu [443]

Answer:

f(x) = -x³ + 3x² + 4x - 12

Step-by-step explanation:

f(x)=(x+2)(-x+3)(x-2)

Step 1. Use the difference of two squares

(x + 2)(x - 2) = x² - 4

f(x) = (-x + 3)(x² - 4)

Step 2. Long multiplication

x² - 4

<u>-x  + 3               </u>

-x³           + 4x

<u>      + 3x²         - 12</u>

-x³ + 3x² + 4x - 12

f(x) = -x³ + 3x² + 4x - 12

5 0
4 years ago
In 1993, president Clinton received an average of 25,000 letters per day. How many letters did he receive during the entire year
rusak2 [61]

Answer:

9,125,000

Step-by-step explanation:

25,000 x 365 days in a year = 9,125,000



5 0
3 years ago
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