Step-by-step explanation:

Answer:
Step-by-step explanation:
2x + 1 + 7x= -8
~2x + 7x = 9x
9x + 1 = -8
move 1 to the other side
9x = -1 -8
9x = -9
divide
X = -1
Answer:
Step-by-step explanation:
You need to set up a ratio for the original recipe and then use that ratio for the new one.
If we need 3 cups of flour for every 4 cups of sugar, we have a 3 c flour/4 c sugar ratio, or 3/4
The new ratio is 9 c of flour for ? c of sugar. Those ratios have to be the same, so we set up an equation like this:
3/4 = 9/?
In order to keep the same ratio, you have to multiply by the same number. Since 3*3 = 9, multiply 4*3 to get your answer.
#3 is the answer
4x+5x is 96 4*8 is 32 5*-3 is -15 32+-15 is 17
Answer:
9
Step-by-step explanation:
- The vertical distance means you are moving directly up or directly down
- So which axis is vertical? The y axis right?
- So what is difference between each y coordinate?
- The upstanding braces you see mean magnitude or absolute value
- It prevent the answer from being negative in short. because distance can't be negative