Answer:
x=4
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
3(x+2)=2(x+5)
(3)(x)+(3)(2)=(2)(x)+(2)(5)(Distribute)
3x+6=2x+10
Step 2: Subtract 2x from both sides.
3x+6−2x=2x+10−2x
x+6=10
Step 3: Subtract 6 from both sides.
x+6−6=10−6
x=4
Answer:
Step-by-step explanation:
2x+5= -25 .........(1)
and -3m-6= 40........(2)
Considering (1): 2x+5= -25
2x = -25 - 5
2x = -30
x = -30/2
x = -15
Considering (2): -3m-6= 40
-3m = 40 + 6
-3m = 46
m = -46/3
Product of x and m = (-15) × (-46/3)
= -5 × -46
= 230
For a relation to be function, every x value should have its unique image in co-domain. If x is related to more than one y value, then that relation is not a function
In 1, as you can see, 1 related to -7 as well as 8. Which means 1 has two images viz. -7 and 8. But for a relation to be function, x should have only one image. Thus, it is not a function.
The worst is the 4th one in which -2 has 4 images.
Therefore, only relation B is a function.
