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Alexxx [7]
2 years ago
9

How many two digit numbers do not contain the digit 9?

Mathematics
1 answer:
cricket20 [7]2 years ago
5 0
87 numbers do not contain the digit 9
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Is this a relation: {(-2,1), (0,0), (0,1), (1,-2), (1,0), (1,3), (2,0)}? Explain why or why not.
tatiyna

It is a relation because any relation is simply a set of (x,y) values known as points or ordered pairs. There are no other qualifications needed to be a relation. We simply pair up any x and y value we want.


I think you meant to ask if it's a function or not. If so, then the answer is "no, it is not a function". Why not? Because the x value x = 0 produces more than one y output y = 1 and y = -2. Graph these points and you'll see them fail the vertical line test (ie its possible to draw a vertical line through more than one point on the graph). The same issue happens with (1,-2), (1,0) and (1,3) as well.


In summary:

Yes it is a relation

No it is not a function

The reasoning for each is stated above

4 0
3 years ago
What is the value of x?<br> sin 55' = COS 3<br> Fnter your answer in the box
vivado [14]
Bro be careful with the link
6 0
3 years ago
PLS HELP!! WILL GIVE BRAINLIEST!
Elodia [21]

Answer:

The lower quartile of Class A is greater than the lower quartile of Class B.

Class A has a Greater number of lower quartiles then Class B as the imagie shows. Class A has 65-75 while class B has 70-75.

3 0
3 years ago
Number System
Pie
C is the correct answer
4 0
2 years ago
3. Paula commutes 60 km each day for work, five days a week, nine months of the year. She travels 720
bezimeni [28]

Answer:

16,080 km.

Step-by-step explanation:

We want the total number of kilometers in one year.

so

4 weeks /month.

for Work:   9 months in the year  60 km/day  5 days/week

Family Visit :  720 km for 4 times a year

Personal:  200 km / month

Work total = 60 km/day * 5 days/week * 4week/month * 9 months

WorkTotal= 60*5*4*9 = 10,800 km

FamilyTotal= 4*720 = 2880 km

Personal = 200*12 = 2400 km

Total = 10,800 + 2880 + 2400 = 16,080 km

7 0
3 years ago
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