Use a calculator to help u and u will get your answer
Answer:
18, -3
using the formula for midpoint M=(x1+x2)/2 ,(y1+y2)/2
Answer:
I THINK:
There will be 8 grams left after 36 minutes.
Step-by-step explanation:
A half-life is how long it takes for half of the amount to go away. in this case, we see that we have two half-life periods worth, which you can determine by dividing the total time by the half-life time.
36mins/16mins = 2 half lives.
now we can raise 1/2 to the power of how many half lives we have (2). then we multiply that by the amount in the sample.
(1/2)^2 * 36
1/4 * 36
8 grams
Solve for x:
2 (6 - x) = x (x + 5)
Expand out terms of the left hand side:
12 - 2 x = x (x + 5)
Expand out terms of the right hand side:
12 - 2 x = x^2 + 5 x
Subtract x^2 + 5 x from both sides:
-x^2 - 7 x + 12 = 0
Multiply both sides by -1:
x^2 + 7 x - 12 = 0
x = (-7 ± sqrt(7^2 - 4 (-12)))/2 = (-7 ± sqrt(49 + 48))/2 = (-7 ± sqrt(97))/2:
Answer: x = (-7 + sqrt(97))/2 or x = (-7 - sqrt(97))/2
Answer:
2 1/2 rolls of ham
Step-by-step explanation:
Break down the question. 1/4 is for 1 slice of cheese. So if she is going to use 1 1/4 now. That means that would be equal to 5 slices of cheese. Now look at the ham. It allows you to start with 1/2 rolls of ham. To make it equal to the 5 slices of cheese. You will do add 1/2 together 5 times. Adding 1/2 and 1/2 is 1. So if you do that another two times. Its now 2. Add one more 1/2 now you have 2 1/2.
