Answer:
Hello, There!
The Answer is No! ^^ It can have Letters in it also But we call those Variables
Step-by-step explanation:
- ⇒An equation is simply a statement in math in which two things on equal. There are two expressions, one on each side of an equals sign.
- ⇒A letter used to substitute for a number in algebra is called a variable, because it stands for different numbers each time you use it.
Therefore, I hope this Helps!
The value of D should be 4
Answer:
21.62m
Step-by-step explanation:
first draw the the pipe
second you need know wich is the angle between the pipe and the corner
β=Tan^-1(6/9)=33.7
find the components using tow triangles
a=9/cos(33.7)=10.81m
b=6/sen(33.7)=10.81m
finally sum the leghts
L=10.81+10.81=21.62mm
attached procedure
Answer:
6.5%
Step-by-step explanation:
Is means equals and of means multiply
Let P be the percent
P * 120 = 7.8
Divide each side by 120
P* 120/120 = 7.8/120
P = .065
Change to percent form
6.5%