It is relatively easy to determine whether an equation is a function by solving for y. When you are given an equation and a specific value for x, there should only be one corresponding y-value for that x-value. For example, y = x + 1 is a function because y will always be one greater than x.
Answer:
w=width
l= 2w-4
perimeter of a rectangle = 34
34 = 2(2w-4+w)
34 = 4w-8+2w
34 = 6w-8
6w = 34+8
6w = 42
w = 42/6
width = 7
length = 2w-4
= 2(7)-4
= 14-4
= 10
Answer:
-10 = 25
Step-by-step explanation:
-2x = 3x + 10
First, substitute in 5 for x
-2 x 5 = 3 x 5 + 10
Multiply -2 and 5 together
-10 = 3 x 5 + 10
Multiply 3 and 5 together
-10 = 15 + 10
Add 10 and 15 together
-10 = 25
I Hope That This Helps! :)
Answer:
AC = 20.5
BC = 14.5
Step-by-step explanation:
The distance from C to A is 6 cm longer than the distance from C to B. gives us the following equation
AC = BC +6
We know the distance of the two segments gives us the total segment
AB = AC + BC
The total segment is AB =35
Substituting into AB= 35 and AC = BC+6
AB = AC + BC
35 = (BC+6) + BC
Combing like terms
35 = 2 BC +6
Subtract 6 from each side
29 = 2 BC
Divide by 2
14.5 = BC
Now find AC
AC = BC+6
AC = 14.5+6 = 20.5
