Answer: So lets say that the width is w. The length(L) is 4 meters greater than 3 times the width. 3 times the width would be 3w, and then 4 meters greater than that would be 3w+4. You have two widths and two lengths to a rectangle that must add up to equal 72. So 2w + 2L =72. But remember that one L equals 3w+4
2(w) + 2(3w+4) = 72
2w+6w+8=72
8w+8=72
8w=64
w=8
L=3w+4
L=3(8)+4
L=24+4
L=28
So the dimensions are 8 meters by 28 meters
To check 2(8)+2(28)=72
Step1- substitute 1 into the y
= -3x-4 x 1=14
=-3x -4=14
=-3x=14+4
=-3x=18
X=18/-3
X=-6
First you divide the cost per the number of units (6):
$2.76/6=$0.46
Then you multiply the unitary cost per 15:
$0.46x15=$6.90 (this is the cost of a 15-pack)
Answer:
33
Step-by-step explanation:
let the shorter piece be x m
then the longer piece is 41-x
"The short piece is 25 meters shorter then the long piece"
or
the difference between the longer and the shorter is 19
--->
(41-x) - x = 25
41-x-x = 25
-2x = 25-41
-2x = -16
divide both sides by -2
x = 8
I defined x to be the short piece ---- 8
I defined 41-x to be the longer --- 41-8 = 33
Answer: y = 31
Step-by-step explanation:
The equation of a line is y = mx+b
Plugging in the values, we get
y = 4*8 + (-1)
y = 32-1
y = 31
