Answer to 25:
It's basically simple algebra where you move the numbers to find that one unknown variable.
Perimeter is the outer length of a shape. It's the distance around its edge. Finding the perimeter just means adding up the lengths of all it's sides.
However we aren't finding the perimeter, we're rearranging the equation to find its length and width.
So they've made it easier for you by giving you the equation itself.
[ Width = x
Length = 2x (Because they mentioned that the length is two times the width). ]
Equation: Perimeter = x + x + 2x + 2x
So input the info you have and rearrange the equation by using simple algebra rules:
36 = x + x + 2x + 2x
36 = 2x + 4x
36 = 6x
36/6 = x
x = 6
You've discovered the width. But how about the length? Simple:
= 2(x)
= 2(6)
= 12
So:
Width = 6
Length = 12
Answer to 26:
Just rearrange it.
4(n+3) = 32
n+3 = 32/4
n+3 = 8
n = 8-3
n = 5
Answer to 27:
Okay so this is a bit confusing to me since it says "same selling price". Meaning in the end, the person doesn't make any profit? Because she uses the same selling price.
So it doesn't make sense. Thus I assume by the phrase "same selling price" is the new selling price after the percentage added:
First find the cost of ONE shirt
$600/40 = $15
Then add the percentage given
600 × 40/100 = 240
= $600 + 240
= $840
Then divide it by the amount of shirts bought to find the new price of ONE shirt
= $840/40
= $21
So now to find the profit she makes per shirt by subtracting the original price of one shirt
= $21 - $15
= $6
Answer:5
Step-by-step explanation:
w(n)=4-1
=5
The answer to your problem is x=26
Step-by-step explanation:
this is confusing.
first the description says "the internal dimensions".
and then it tells us the thickness of the tank walls (1cm).
so, I am not sure what the given numbers describe.
in any case, the volume is length × width × height.
so, either
48×38×32
or
46×36×31 (as for length and width we need to consider 2 walls, one on each end, for the height only one wall, as the tank is open and lidless.
whatever you choose, make sure to mark the result as cm³.
Answer:
-12
Step-by-step explanation:
2^p = ⅛⁴
⅛ x ⅛ x ⅛ x ⅛ = 1/4096
2^p = 4096
log base 2 of 1/4096 = -12
