The answers are b and c. Plug in -4 for x and solve each option
2(-4) -8 = 0. 0 does not equal 1
3(-4) +8 = -4
1/2 * -4 + 3 = 1, -4+5 = 1
2(1- -4) = 10, -4 + 2 = -2
Answer: 26/3 or 8 2/3
Step-by-step explanation:
In the addition or subtraction of fraction, first, you have to convert all of them into improper fraction if they are mixed; then, you need to find the LCD (Least Common Denominator).
<u>Converting fraction:</u>
5 3/4=23/4
2 11/12=35/12
<u>Finding LCD:</u>
4 and 12 is 12
<u>Converting fraction into common denominator:</u>
23/4=69/12
35/12=35/12
<u>Solve:</u>
5 3/4 + 2 11/12
=69/12 + 35/12
=104/12
<h2>=26/3</h2>
Let
x = cost of a ticket for a senior
y = cost of a ticket for an adult
z = cost of a ticket for a student.
The first student buys 2 senior, 1 adult, and 2 student tickets for $51.
Therefore
2x + y + 2z = 51 (1)
Th second student buys 1 adult and 5 student tickets for $5.
Therefore
y + 5z = 55 (2)
The third student buys 2 senior, 2 adult, and 7 student tickets for $75.
Therefore
2x + 2y + 7z = 75 (3)
Answer:
The system of equation for determining x, y, and z is
2x + y + 2z = 51
y + 5z = 55
2x + 2y + 7z = 75
Warnng: The system of equations does not have a solution.
