Answer:
The answer is (A) (-6,4).
Step-by-step explanation:
First you have to multiply the first equation by 6 and the second equation by 4. Then next you subtract the second equation from 1.
30x + 24y = - 84
12x + 24y = 24
18x + 0. = - 108
=> 18x = - 108
=> x = - 108 / 18
=> x = - 6
Then for the next step
then put in x = - 6 in equation 2 and solve for y
(
3x + 6y = 6)
(3×(-6) + 6y = 6)
( - 18 + 6y = 6)
( 6y = 18 + 6
)
( 6y = 24)
(y = 4
)
(I really do hope this helps!!!)
Answer:
Step-by-step explanation:
Prime numbers are numbers that are divisible by itself and '1'. This means prime numbers are numbers with just two factors while composite numbers are numbers that are divisible by more than two numbers, that is they have more than 2 factors.
Example of prime numbers are 5,7,11 etc. We see that these numbers are only divisible by themselves and by '1' while examples of composite numbers are 10, 15, 20, etc. We clearly see that these numbers have more than 2factors.
Answer:
54
Step-by-step explanation:
Answer:
400$
Step-by-step explanation:
Let C.P. of the watch = Rs. 100
When profit =5%; S.P. = Rs. (100+5)
= Rs. 105
and when profit = 11%;
S.P. = Rs. (100+11)
=Rs.111
Difference of two selling prices
= Rs. 111-Rs.105 = Rs.6
When watch sold for Rs. 6 more; then C.P. of the watch = Rs.
100
6
When watch sold for Rs. 24 more; then C.P. of the watch = Rs.
100
6
×
24
= Rs.
100
×
24
6
=400
