Answer:
10.5
Step-by-step explanation: if he got the pants on sale the price would be 59.5 becuase 70*15%=10.5 and u would subtract 70-10.5=59.5
70-59.5=10.5
Answer:
A. The set of happy people.
B. The set of good teachers.
C. The set of enjoyable subjects.
D. The set of Philippine Presidents
Answer:
A Pyramid
Step-by-step explanation:
1. 1 7/8
wait a minute for me to answer number 2
Answer:
There are no extraneous solutions
Reasoning:
An extraneous solution is a solution that isn't valid, it might be imaginary like the square root of a negative number.
first we want to isolate z:
1+sqrt(z)=sqrt(z+5)
^2 all ^2 all
(1+sqrt(z))(1+sqrt(z))=z+5
expand
1+2sqrt(z)+z=z+5
-1 -z -z -1
2sqrt(z)=4
/2 /2
sqrt(z)=2
^2 all ^2 all
z=4
Since there is one solution and it is a real number, there are no extraneous solutions.
