Note: Steps of student are not given. So, the proper steps of the solution are provided below.
Given:
The inequality is

To find:
Where the student made any errors?
Solution:
We have,

On dividing both sides -5 change the sign of equality because -5 is a negative number.


Therefore, the solution of given inequality is
.
Answer:
Lines in the same plane that intersect to form a 90 degree angle
Step-by-step explanation:
Formula for area of rectangle:
A=L x w
Here A=85 square ft
Length, L=w+12
Put values in formula.
85=(w+12)w
85=w^2+12w
Subtract 85 from both sides
w^2+12w-85=0
Factorise the equation.
(w-5)(w+17)=0
w=5 and w=-17
Ignore the negative value of width.
Width, w= 5 ft and Length, L=12+5=17 ft
Answer: Width=5 ft and Length=17 ft
i believe the answer is 4.
<span>The answer is in the thousands group. Its the way they word the problem that complicates it. 913,256 256 being the ones group 913 being the thousands group. So the name of the period with 913, is the thousands group</span>