Answer is y intercept
-3 is ur y intercept
Answer:
4
Step-by-step explanation:
Set up ratios of corresponding sides. x+2 is to 6 as 2 is to 3:
Now cross multiply to get
3(x + 2) = 12 and
3x + 6 = 12 so
3x = 6 and
x = 2. That means that side AB, x + 2, is 2 + 2 which is 4
A. This is the original equation: 2x + 3 - 1 = x + 5
b. 2x + 2 = x + 5 ← combined like terms on left side
2x + 2 - 2 = x + 5 - 2 ← used inverse operation to collect constants on right side
2x = x + 3 ←simplified each side
2x - x = x - x + 3 ←used inverse operation to collect variable terms on left side
x = 3 ← simplified each side
answer x = 3
c. 2(3) + 3 - 1 = 3 + 5
6 + 3 - 1 = 8
9 - 1 = 8
8 = 8
Answer:
we can write an equation wich describes the amount of aspirin in her system in respect to the hours (x)
a(x) = 520 * 0.78^x
78% is what's left on respect to one hour before and the "to the power of x" part describes how often we multiply/how many hours have passed
actually, if you haven't learned a better method yet, you could just grab your calculator, and type in 520 * 0,78
calculate it
then repeat multiplying the last answer till you go just below 80. the number of steps is the number of full hours passed.
this would take 8 steps
do you need a more sophisticated method to nail it down to the minute?
got no clue how far you are with the whole topic yet.
anyways, hope this helps you :)
