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Zanzabum
3 years ago
12

There are 10 balls in a bag numbered from to 10. Three balls are selected at random without replacement. a. How many different w

ays are there of selecting the three balls? b. What is the probability that one of the balls selected is the number 5?
Mathematics
1 answer:
zhenek [66]3 years ago
4 0

A) 30 possible combinations

B)1/10

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Which relation is represented by the arrow diagram?
lorasvet [3.4K]

The relation represented by the arrow diagram is {(-3, 4), (-1, 5), (0, 7), (2, 2), (5, 7)}.

Option: C.

<u>Step-by-step explanation:</u>

A function is a relation in which each input value(domain) results in one output value(range). It is represented diagrammatically using the mapping method.

It shows how each element of domain and range are paired. That is like a flowchart it shows the input values marking its corresponding output value.

In the given diagram,

The values given in the left are domain and values given in the right are range.

Thus, -3 marks to 4, then can be written as (-3,4).

Similarly,

-1 marks 5 = (-1,5).

0 marks 7= (0,7).

2 marks 2= (2,2).

5 marks 7 =(5,7).

⇒ The complete points sequence is {(-3, 4), (-1, 5), (0, 7), (2, 2), (5, 7)}.

7 0
3 years ago
It has been estimated that a student’s final grade in a course decreases by 5 points for every 2 days absent from class. If a st
enyata [817]

Answer:

10 points

Step-by-step explanation:

per 2 days you lose 5 points. To get to 4 days you multiply 2 by 2 and get 4 and 5 by 2 and get 10. So per 4 days he loses 10 points.

5 0
3 years ago
How do you do 44.70 divided by 15 long division
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Since the divisor is 2 digits, start by looking at the first 2 digits of the dividend. Those are 44, so you're dividing 44 by 15 at the first step. The quotient digit is the largest integer that gives a value less than or equal to the dividend (44) when multiplied by the divisor (15). For the first step, that digit is 2.

To find the new divisor, subtract the product of the divisor and the quotient digit (2·15=30) and bring down the next digit of the original dividend. Now, you have a dividend of 147 and a divisor of 15. Repeat the process as above.

The decimal point location in the answer can be found a number of ways. The simpliest is to put it above the decimal point in the dividend. (When the divisor is not an integer, multiply or divide both divisor and dividend by the same power of 10 until it is.)

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3 years ago
6. Find the equation of a parabola with a focus of (0, 15) and directrix y = -15
mihalych1998 [28]
Hey i just need points
U got this
8 0
3 years ago
I'll mark you the brainiest if you get this right
Ksenya-84 [330]

0,1 chance is the correct answer

4 0
3 years ago
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