Answer:
3/2
Step-by-step explanation:
7z+2=8+2z+1z
7z+2=8+3z
7z-3z+2=8
4z+2=8
4z=8-2
4z=6
z=6/4
simplify
z=3/2
In my opinion I think that it would be 15cm
Answer:
meter
Step-by-step explanation:
We have to write first what is known from the information.
Let's say, length is L, width is W, and height is H
1. The length of the box is 2 1/2 m = 2,5 m = 5/2 m, it is 1 9/16 = 25/16 times it's width (L). So we have the equation :
L ≡ 
Then we find the W. From the fraction above, we found W equals to
meter
2. What is the height of the box, if its volume is 12 3/4 m^3 = 51/4 m^3
Formula of a volume is :
The area wide times the height
In this problem, the equation is :
L × W × H = Volume
Insert the numbers,
×
× H = 
From the fraction above, we can find that H equals to
meter
Rearrange so x is the subject:-
(im assuning the f unction f(x) = (x + 2) / 7):-
f(x) = (x + 2)/7
7f(x) = x + 2
x = 7f(x) - 2
replace f(x) by x and x by another function
f = 7x - 2
Its D
The variable expression is x(shirt cost) + 8. The answer is x+8.