Answer:
b b.b b b b b b b b b b b b b b b b b b
Step-by-step explanation:
b b b
Answer: SHE GOT 13 MONTHS YES SHE DO, 13 MONTHS LEFT IS ANSWER
Step-by-step explanation:
Answer:
9mph
Step-by-step explanation:
Speed = distance/time
Given
Distance = 9 miles and
Time = 1 hr
Speed = 9/1
= 9mph
A=number of seats in section A
B=number of seats in section B
C=number of seats in section C
We can suggest this system of equations:
A+B+C=55,000
A=B+C ⇒A-B-C=0
28A+16B+12C=1,158,000
We solve this system of equations by Gauss Method.
1 1 1 55,000
1 -1 -1 0
28 16 12 1,158,000
1 1 1 55,000
0 -2 -2 -55,000 (R₂-R₁)
0 12 16 382,000 (28R₁-R₂)
1 1 1 55,000
0 -2 -2 -55,000
0 0 4 52,000 (6R₂+R₃)
Therefore:
4C=52,000
C=52,000/4
C=13,000
-2B-2(13,000)=-55,000
-2B-26,000=-55,000
-2B=-55,000+26,000
-2B=-29,000
B=-29,000 / -2
B=14,500.
A + 14,500+13,000=55,000
A+27,500=55,000
A=55,000-27,500
A=27,500.
Answer: there are 27,500 seats in section A, 14,500 seats in section B and 13,000 seats in section C.
Answer:
![4x^3+7x^2+5x+2](https://tex.z-dn.net/?f=4x%5E3%2B7x%5E2%2B5x%2B2)
Step-by-step explanation:
Given:
![f(x)=4x^2+5x-3](https://tex.z-dn.net/?f=f%28x%29%3D4x%5E2%2B5x-3)
![g(x)=4x^3+3x^2+5](https://tex.z-dn.net/?f=g%28x%29%3D4x%5E3%2B3x%5E2%2B5)
![\begin{aligned}\implies (f+g)(x)=f(x)+g(x) & = (4x^2+5x-3) + (4x^3+3x^2+5) \\& = 4x^2+5x-3+4x^3+3x^2+5 \\& = 4x^3+4x^2+3x^2+5x-3+5 \\& = 4x^3+7x^2+5x+2 \\\end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%5Cimplies%20%28f%2Bg%29%28x%29%3Df%28x%29%2Bg%28x%29%20%26%20%3D%20%284x%5E2%2B5x-3%29%20%2B%20%284x%5E3%2B3x%5E2%2B5%29%20%5C%5C%26%20%3D%204x%5E2%2B5x-3%2B4x%5E3%2B3x%5E2%2B5%20%5C%5C%26%20%3D%204x%5E3%2B4x%5E2%2B3x%5E2%2B5x-3%2B5%20%5C%5C%26%20%3D%204x%5E3%2B7x%5E2%2B5x%2B2%20%5C%5C%5Cend%7Baligned%7D)