Answer: Isolate the variable by dividing each side by factors that don't contain the variable.
Inequality Form:
n > 4
Interval Notation:
(4 ,∞)
Step-by-step explanation: No need for a step by step explanation
Answer:
x= 0, and x=4
Step-by-step explanation:
x² -x = 3x, we can subtract 3x from both sides
x² -x -3x = 0, combine like terms
x² -4x = 0 , factor x
x *( x-4) = 0, if the product of 2 numbers equals 0 at least one is 0
x=0 and
x-4 = 0, add 4 to both sides
x= 4
Answer:
62.5%
Step-by-step explanation:
Step 1:
You divide 5 by 8.
0.625
8⟌5
<u>- 0</u>
50
<u>- 48</u>
20
<u>- 16</u>
40
<u>- 40</u>
0
The good option to multiply the top equation by is <u>-4</u>
<h3>
REASON :-</h3>
This is because, when we solve the equations, in the left side of first equation :-
☆ -2 can be multiplied by <em>-4</em><em> </em>to get the value 8 on the left side of second equation.
☆ This can help in easier elimination in the given set of equations.
■ The process is to be done as per the given below way :
Now the 8x on both equations can be cut.
A=number of adult tickets
s=number of student tickets
number of adult tickets was 120 less than twice student
a=-120+2s
total was 840
840=a+s
subsitute -120+2s for a
840=-120+2s+s
840=-120+3s
add 120 to both sides
960=3s
divide both sides by 3
320=s
sub back
a=-120+2s
a=-120+2(320)
a=-120+640
a=520
520 adult tickets
320 student tickets