Answer:
A
Step-by-step explanation:
Notice: The literal factors are all the combinations of a and b where the sum of the exponents is 4: a4, a3b, a2b2, ab3, b4.
The degree of each term is 4.
The first term is actually a4b0, which is a4 · 1.
Thus to "expand" (a + b)5, we would anticipate the following terms, in which the sum of all the exponents is 5:
(a + b)5 = ? a5 + ? a4b + ? a3b2 + ? a2b3 + ? ab4 + ? b5
The question is, What are the coefficients?
They are called the binomial coefficients. In the expansion of
(a + b)4, the binomial coefficients are
1 4 6 4 1
Ab=81, a=81/b
s=a+b using a from above in this we get:
s(b)=81/b +b
s(b)=(81+b^2)/b
ds/db=(2b*b-81-b^2)/b^2
ds/db=(2b^2-81-b^2)/b^2
ds/db=(b^2-81)/b^2
d2s/db2=(2b^3-2b^3+81)/b^4
d2s/db2=81/b^4 since b is positive we know that the acceleration is positive so that when ds/db=0 it is a minimum for s(b)
ds/db=0 only when b^2-81=0, b^2=81, b=9
The two positive numbers are 9 and 9.
Turn the improper fraction 2(3/4) into a mixed fraction by multiplying the coefficient or outside number "2" by the denominator "4" and then adding that result with the numerator "3":
2*4 = 8
8 + 3 = 11
Leave the denominator fixed and put you previous result as the numerator; your new fraction is 11/4
Now multiply this with 4/5:
11/4 * 4/5 = 44/20 = 22/10 = 11/5 (simplified result)
Now convert this simplified mixed fraction back into an improper fraction:
You divide the denominator "5" into the numerator "11" and put the most amount of times it goes into it out front as the coefficient;
We get that 5 goes into 11 a maximum number of times which is 2.
Then subtract the numerator "11" from "10" (5 *2) and we get 1.
Our answer is 2(1/5)
1500. since hes marking it up by 50% then take half of 3000 to get your answer
the answer is:
78.7 (i rounded it to the nearest tenth)
