Answer: x = 11
Step-by-step explanation:
You didn't state what you needed for these problems so I'm going to assume you need to solve for X.
1st Equation:
3x - y = 23 --> y = 3x - 23
2nd Equation:
2x + 3y = 8 --> (3y = 8 - 2x)/3 = y = 8/3 - 2x/3
Set Equations = to Each other
3x - 23 = 8/3 - 2x/3 --> 3x - 2x/3 = 8/3 + 23
9x/3 - 2x/3 = 8/3 + 69/3 --> 7x/3 =77/3
7x/3 X 3/7 = 77/3 X 3/7
x = 11
If you need to solve for y as well plug the x value back into the original equation and solve.
Answer:
108 or 72
Step-by-step explanation:
:) cdhhyvfhjyvfyhgfvhghghhhjbh
do you have S s-n-a-p-c-h-a-t
<span>Section A seats = 1500
Section B seats = 4500
Lawn seats = 17000
Let's write a few equations to express what we know.
A = number of seats in section A
B = number of seats in section B
L = number of law seats
"There are three times as many seats in Section B as in Section A"
B = 3A
"all 23,000 seats"
L = 23000 - A - B
L = 23000 - A - 3A
"The revenue from selling all 23,000 seats is $870,000"
870000 = 30L + 55B + 75A
Now let's substitute 3A for B
870000 = 30L + 55(3A) + 75A
And substitute (23000 - A - 3A) = (23000 - 4A) for L
870000 = 30(23000 - 4A) + 55(3A) + 75A
And solve for A
870000 = 30(23000 - 4A) + 55(3A) + 75A
870000 = 690000 - 120A + 165A + 75A
870000 = 690000 + 120A
180000 = 120A
1500 = A
So we know that section A has 1500 seats.
Because of B = 3A = 3*1500 = 4500, section B has 4500 seats.
Finally, L = 23000 - A - B = 23000 - 1500 - 4500 = 17000 seats</span>
Answer:
I think the answer is 11.8
Step-by-step explanation:
25+ [ 15- 4 x 16/5] - 15.4
25 +[ 15- 4/1 x 16/5] - 15.4
25+ [ 15 - 20/5 x 16/5] - 15.4
25 +[ 15 - 64/5] - 15.4
25+ [ 15/1 - 64/5] - 15.4
25+ [75/5 - 64/5] - 15.4
25+ 11/5 - 15.4
25+ 2.2 - 15.4
27.2 - 15.4
11.8
Answer:
395.2
Step-by-step explanation:
104 x 3 .8 = 395.2
Good luck on the test!
