Answer:
B. 2x + y = 4
Step-by-step explanation:
If you look carefully, you will see that
y = -2x + 4 and
2x + y =4
are the same equation, so there are infinitely many solutions for the system, namely, all the points on the line y = -2x + 4
If you want to find an example of solution, just give arbitrary values to x and solve for y.
For example
x = 1, y=2 is one solution
x=2, y = 0 is another one.
There are as many solutions as values of x you try, so there are infinitely many.
Try dividing 40 cents by 20 cents and then multiplying the answer you get by 100 and you should get your answer. If this is wrong i'm sorry.
Answer:
person A tour: $107.9 million
person B tour: $83.4 million
Step-by-step explanation:
If person A and person B together generated $191.3 million in ticket sales, we can write the equation:
X + Y = 191.3
Where X is the amount generated by A alone in millions and Y is the amount generated by B alone in millions.
If person B took in $24.5 million less than person A, we can write the equation:
Y = X - 24.5
So, we can use this expression for Y in the first equation to find the value of X:
X + (X - 24.5) = 191.3
2X = 191.3 + 24.5 = 215.8
X = 107.9
Then, we find the value of Y:
Y = X - 24.5 = 107.9 - 24.5 = 83.4
So, person A tour generated $107.9 million in ticket sales, and person B tour generated $83.4 million in ticket sales.
To evaluate (find the value of this expression), you will evaluate what is in the middle set of parentheses first. You can evaluate powers at the same time as if the are outside the parentheses. Follow this with the outside parenthesis.
Next evaluate all multiplying or dividing left to right.
Finally, add or subtract left to right.
2[3(4^2 + 1)] - 2^3
2[3 x (16+1)] - 2^3
2[3 x 17] - 8
2(51) -8
102 - 8
94
Out of four statements, only (c) is correct
Step-by-step explanation:
Given: The mean score for a math test taken by Class A is 84, with the scores ranging from 78 to 94. The mean score for the same math test taken by Class B is 76, with the scores ranging from 68 to 88
a) Incorrect: The highest score was in Class A which is 94
b) Incorrect: The average of Class A is 84 which is higher than Class B is 76
c) Correct : The average of Class A is 84 which is higher than Class B is 76
d) Incorrect: The difference between highest and lowest scores in Class A is 16(94-78) whereas in Class B its 20(88-68)