Probability for the first and second years separately is 0.18, so together they are 0.18²=0.0324 or 3.24%.
Answer:
x = -4
Step-by-step explanation:
Plug it in, you get 0.5 times -4 = -2. Then -2 + 1.5 = -0.5. The absolute value is 0.5. Distribute the positive 2 to get 2 times 0.5 = 1
3-1 = 2
Let t = the total number of hamburgers and cheeseburgers, c = the total number of cheeseburgers, and h = the total number of hamburgers.
t = c + h where t = 600
c = h + 50
Use substitution to solve for h:
600=(h+50)+h
600= 2h+50
600-50=2h
550=2h
550/2=2h/2
h=275
therefore, 275 hamburgers were sold on thursday.
Answer:
21.69% decrease.
Step-by-step explanation:
So we want to find the percentage change from 16.6 to 13.
First, since 13 is smaller than 16.6, we know that this is decrease.
The formula for percentage change is given by:
The new value is 13. The old value is 16.6. Put these into the equation:
Simplify the numerator. 13-16.6 is -3.6. Thus:
Multiply both the numerator and denominator by 10:
Reduce the fraction:
Use a calculator. Approximate:
We ignore the negative because the negative simply tells us that it's decreasing (on a side note, if the answer is positive, it's a percent increase). So, the percent change is an approximate 21.69% decrease.