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Varvara68 [4.7K]
3 years ago
11

These ones always confuse me.

Mathematics
1 answer:
MissTica3 years ago
5 0
You just puts them in the order on the line
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A certain lot consisting of ten items has three defective items and seven nondefective items. How many possible subsets of 2 ite
Charra [1.4K]

Answer:

45

Step-by-step explanation:

The order in which the items are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

How many possible subsets of 2 items can be chosen from this lot?

Combinations of 2 from a set of 10. So

C_{10,2} = \frac{10!}{2!(10-2)!} = 45

4 0
3 years ago
What is 6(4x-3)-9x solved
GarryVolchara [31]
-18 +15x = y
Spam characters: aksjakfhakdjk
5 0
3 years ago
London was offered a job that paid a salary of \$93,000$93,000 in its first year. The salary was set to increase by 2% per year
Tema [17]

Answer: Amount = $143776

Step-by-step explanation:

Given that London was offered a job that paid a salary of $93,000 in its first year. The salary was set to increase by 2% per year every year.

Let P = 93000

Rate R = 2%

The amount of salary he will receive after 22 years can be calculated by using exponential equation

A = P(1 + 2%)^t

Where t = 22 years

A = 93000(1.02)^22

A = 93000 × 1.545979

A = 143776.11 dollars

5 0
3 years ago
Read 2 more answers
Erin received the following scores on her last four spelling tests.
gtnhenbr [62]
(21/25) * 100
84 %

82 %

0.8 * 100
80 %

(17/20) * 100
85 %

17/20 is the highest one
8 0
3 years ago
Read 2 more answers
Find the measure of an angle and its complement if one angle measures 24 degrees more than the other.
Vera_Pavlovna [14]

Complementary angles = 90

x+y =90

y=x+24

substitute this in to the equation

x+x+24=90

2x+24=90

subtract 24 from each side

2x = 66

divide by 2

x=33

y = 33+24

y=57

Answer: 33, 57

6 0
3 years ago
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