Answer:
![-7x-3](https://tex.z-dn.net/?f=-7x-3)
Step-by-step explanation:
just means
.
So
![-3x-5-(4x-2)\\-3x-5-4x+2\\-7x-3](https://tex.z-dn.net/?f=-3x-5-%284x-2%29%5C%5C-3x-5-4x%2B2%5C%5C-7x-3)
C! Is the answer. Hope that helped! ((:
Answer:
- -35/3, -140/3, - 560/3, -2240/3
- 7, -28, 112, - 448
Step-by-step explanation:
<u>The terms are:</u>
<u>Given:</u>
- a₁ = a₂ + 35
- a₃ = a₄ + 560
<u>Use the nth term formula:</u>
- a₂ = a₁r
- a₃ = a₁r²
- a₄ = a₁r³
<u>Substitute:</u>
- a₁ = a₁r + 35 ⇒ a₁(1 - r) = 35
- a₁r² = a₁r³ + 560 ⇒ a₁(1 - r)r² = 560
<u>Divide the second equation by the first:</u>
- r² = 560/35
- r² = 16
- r = √16
- r = ± 4
<u>Use the first equation to find the first term:</u>
- a₁( 1 ± 4) = 35
- 1. a₁ = 35/-3 = -35/3
- 2. a₁ = 35/5 = 7
<u>We have two sequences:</u>
r = 4
- -35/3, -140/3, - 560/3, -2240/3
r = -4
Correct question: Find the number of students in the set FΔBΔM
Answer:
FΔBΔM = 130
Step-by-step explanation:
In set notation the symbol Δ means symmetric difference. The symmetric difference of two or more sets is the combination or union of the elements of the sets excluding their interception.
in the question the following are given;
n(F∩B∩M)=10
n(F∩B)=36
n(F∩M)=20
n(B∩M)=18
n(F)=65
n(B)=76
n(M)=63
From the attached Venn diagram,
FΔBΔM= 35+32+19+26+10+8
FΔBΔM= 130