Answer:
A number is 157,355
Step-by-step explanation:
We are given a six digit number 156,350. If we subtract 156,350 from a unknown number (x) rsult should be 4 digit number.
Let we suppose 4-digit number smallest as well largest
Smallest 4-digit number = 1000
If we subtract 156,350 from x to get 1000
x-156350=1000
x=156350+1000
x=157,350
Largest 4-digit number = 9999
If we subtract 156,350 from x to get 9999
x-156350=9999
x=156350+9999
x=166,349
Four digit number should be lie between 157,350 to 166,349
We can choose any number between them
Thus, 157,355 is a number to get 4-digit number when 156,350 is subtract.
Answer:
Step-by-step explanation:
Solve 3y + 10.5 = 6.5 + 2.5y.
Add -2.5y to both sides so that the variable remains on one side only. Now isolate the variable by subtracting 10.5 from both sides. Multiply both sides by 10 so that 0.5y becomes 5y, then divide by 5. Check your solution by substituting -8 in for y in the original equation.
B.$21.87
C.$97.20
D.$218.70
Answer:
C. $97.20
Step-by-step explanation:
Let the dinner bill be $x.
The tip given to the waiter is $14.58.
Also, it is given that the tip is 15% of the tip.
Thus we get the relation 15% of x = 14.58
i.e. 0.15x = 14.58
i.e.
i.e. x = 97.20
Hence, the amount of dinner bill before the tip is added is given by $97.20
{(0, 3),(3, 5),(5, 6),(8, 4)}
{(1, 2),(3, 3),(4, 8),(6, 3)}
{(3, 4),(5, 2),(5, 6),(7, 3)}
A mapping is said to be function if each element in the domain is related with only one element in the range.Or you can say that a relation is a function also when two different elements in domain have same image or related with same element of the Co domain.
The elements which is related with elements of domain is called Co domain.
So , using the definition of function that i have written above you can classify that the relation is a function or not
1. {(2, 2),(4, 4),(6, 6),(8, 8)}
→→Each element is related with itself , no two different images have different Preimage, For example (2,3),(2,4) that is not happening in this case. so this relation is a function.This kind of function is called identity function.
2. (0, 3),(3, 5),(5, 6),(8, 4)→Different element have different images .So this Relation is a function.
3. (1, 2),(3, 3),(4, 8),(6, 3) →→→Here two elements have same image 3. But still this is a function because two elements in domain or preimage can have same image in a function.
4. (3, 4),(5, 2),(5, 6),(7, 3)→→→This is not a function because two different elements of image have same preimage that is image of 2,and 6 have same preimage which is 5. So this is not a function.
From The given options 1,2,3 are functions.
B) 30
C) 100
D) 223
Answer: 223
Step-by-step explanation:
Therefore, the SMALLEST number of students he must measure is the total number of students surveyed i.e. 223.
Hence, the SMALLEST number of students he must measure =223