Let us take the second equation first
2a + 2b = 6
Dividing both sides by 2 we get
a + b = 3
a = 3 - b
Putting the value of a in the first equation we get
3a + 4b = 9
3(3 - b) + 4b = 9
9 - 3b + 4b = 9
b = 9 - 9
= 0
Now putting the value of b in the second equation we get
a + b = 3
a + 0 = 3
a = 3
So the value of the unknown variable a is 3 and the value of the unknown variable b is 0.
Range of y = -3 cosx -1 is -4 < y < 2
1. D
2. E
3. B
4. Pentagon
5. C
Answer:
1/6×12/13
2/13
Step-by-step explanation:
thats the answer
Cathy drank 1,000 ml of water which means she drank 1 liter.
