Answer:
X=-1
Y=1
Step-by-step explanation:
6x-12y
-18
) 6x + 4y
-
-2
Subtract the two equations
6x - 12y - (6x + 4y) = -18 - (-2)
Determine the sign
6x- 12y - 6x- 4y
=-18 + 2
Simplify
-12y
- Ay
=-18 + 2
Solve the equation
Substitute
6×+4
-2
Solve the equation
X=
Answer:
$5.95
Step-by-step explanation:
To get the discounted price, we need to find how much is taken off from the regular price.
x/8.50=30/100
30×8.50=255
255/100=2.55
$2.55
Next, we need to subtract $2.55 from $8.50 to get the discounted price.
8.50-2.55=5.95
$5.95
$5.95 is the discounted price.
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Let's go through each answer choice one at a time.
--------------------------------------------------
Choice A
3/4 < 5/7
3*7 < 4*5 ... cross multiply
21 < 20
The last inequality is false, so the original inequality is false
Choice A is false
--------------------------------------------------
Choice B
2/3 > 5/6
2*6 > 3*5 ... cross multiply
12 > 15
The last inequality is false, so the original inequality is false
Choice B is false
--------------------------------------------------
Choice C
5/8 > 6/10
5*10 > 8*6 ... cross multiply
50 > 48
The last inequality is true, so the original inequality is true
Choice C is true
--------------------------------------------------
Choice D
4/5 < 2/9
4*9 < 5*2 ... cross multiply
36 < 10
The last inequality is false, so the original inequality is false
Choice D is false
--------------------------------------------------
In summary, we have
A. False
B. False
C. True
D. False
So the final answer is choice C
Its true because you have to subtract in the long version so do you want me to show it to you?
9514 1404 393
Answer:
Step-by-step explanation:
If 'a' adult tickets are sold for $11 each, the amount of money they sold for is ...
11a
If 'c' children's tickets are sold for $5 each, the amount of money they sold for is ...
5c
Then the expression for the total amount from the sale of tickets is ...
11a +5c . . . . total of money raised
__
The value of this expression for a=247 and c=390 is ...
11·247 +5·390 = 2717 +1950 = 4667
A total of $4667 was raised by the sale of tickets.
