Answer:
Option B is correct.
add 4 times the second equation to 3 times the first equation
Step-by-step explanation:
Given the system of equation:
......[1]
.....[2]
Multiply equation [1] by 3 we get;
Using distributive property; 
6x - 12y = 18 .......[3]
Multiply equation [2] by 4 we get;
Using distributive property we get;
-12x + 12y = 48 ......[4]
Add equation [3] and [4] to eliminate y and solve for x;
(6x -12y) + ( -12x +12y ) = 18 + 48
6x - 12y -12x + 12y = 66
Combine like terms;
6x - 12x = 66
or
-6x = 66
Simplify:
x = -11
Therefore, the operation which could be used to eliminate the y-variable and find the value of x is;
add 4 times the second equation to 3 times the first equation.
Answer:
∠AOB = 112°
Step-by-step explanation:
mentally draw line segment OC
that line bisects 124° so ∠OCB = 1/2(124°) = 62°
ΔOCB is isosceles because OB = OC
∠OBC = 62° because it is equal to ∠OCB
all triangle interior angles add up to 180°
∠BOC = 180° - 62° - 62° = 56°
∠AOC = 56° because OC was a bisector of ∠AOB
∠AOB = 56° + 56° = 112°
The answer to your question is A
Answer:
<h2>$326.25</h2>
Step-by-step explanation:
The question is incomplete as we were not given to numbers of adults and children, neveherless we can assume some figures and plug it into the expression
say number of adult is 15
and number of chidren is 30
In this problem we are going to the values of adults and children tickets into the expression for the total cost and return the answer, which is the total cost of tickets sold
given the expression
8.75 x+ 6.50y
substituting for x and y we have
8.75(15)+ 6.50(30)=
131.25+195=$326.25
The total cost for 15 adults and 30 children is $326.25
