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.
Answer:
y = 1x - 4
Step-by-step explanation:
y2 - y1 / x2 - x1
0 - 4 / 4 - 8
-4 / -4
1
y = 1x + b
0 = 1(4) + b
0 = 4 + b
-4 = b
the expression is 8q÷4
Hope this helped!!!
Answer:
PD is the answer
Step-by-step explanation:
(PA) (PC) = (PB) (PD)
Answer:
Step-by-step explanation:
(5y - 2.3) + (-2y - 4.3) = 3y - n Remove the brackets
5y - 2.3 - 2y - 4.3 = 3y - n Combine like terms
3y - 6.6 = 3y - n Subtract 3y from both sidess
- 6.6 = - n Divide by - 1
6.6 = n