Hello,
This is an arithmetic sequence:
f(1)=3
f(2)=3+5
f(3)=3+2*5
f(4)=3+3*5
...
f(n)=3+(n-1)*5
In this question, you're solving for x.
Solve for x:
x + 4.2 = 7
You need to get x by itself, to do so, you would need to subtract 4.2 from both sides:
x = 2.8
Answer:
x = 2.8
Answer:
7 cajas grandes y 3 cajas pequeñas
Step-by-step explanatio:
The answer would be x=7.
I hope this helps!
Apologies for this being answered late.
Call the length a, the width b
Perimeter = (a+b) x 2
We have : a - b = 4 and (a+b) x 2 = 56
-> a + b = 28
-> a - b = 4
=> a+b + (a-b) = 32
2a = 32
a = 16
b = 56:2-16 = 12
So, the length = 16 and the width = 12