In a line parallel to y-axis, the x would have to be constant, if it's not constant (always the same) then it won't be parallel. Constant values of y could be y=1, y=2... etc, and we have this as an option: y=5, this is the correct answer.
(1) would be parallel to x axis and 2 and 4 are diagonal or sloping lines.
Answer:
A + B = 24
16A + 20B = 434
Step-by-step explanation:
To write a system of equations for this scenario, let's say that A represents the number of hours machine A ran, and B represents the number of hours machine B ran.
The first equation will be:
A + B = 24
because the total number of hours ran is 24.
The second equation will be:
16A + 20B = 434
because the total number of items made is 434.
A + B = 24
16A + 20B = 434
First solve for one variable, and let's just do A.
Using the first equation, A + B = 24, A is equal to 24 - B.
Substitute this value to the second equation.
16 (24 - B) + 20B = 434
384 - 16B + 20B = 434
4B = 50
B = 12.5
Now use this value of B to find the value of A.
A + 12.5 = 24
A = 11.5
Machine A ran for 11.5 hours, and Machine B ran for 12 hours.
Hi there! To help you with this, all you have to do is add or subtract the number on the left, depending what the number is to get the variable by itself. If the number is positive with a plus sign, you add. If the number is negative with a minus symbol, you add. With that being said, here are the answers to help you out.
1. B: 8
2. A: 8
3. A: 25
4. C: -1
This arithmetic sequence has first term 6 and common difference -1. The general formula is
an = a1 +(n-1)d
For your sequence, this is
an = 6 +(n-1)*(-1)
an = 7 - n
Answer:
3) 6.16
4) -11
5)1.73
6) -3.16
I hope I'm right and if not then I'm sorry :/
