Nn=Nq+5
25=3Nn+2Nq
Problem #2
4Nn + Nd = -6
-2Nn+ 3Nd= 24
2007-06-07 06:43:46 · 4 answers · asked by Amy M 5 in Science & Mathematics ➔ Mathematics
Nn=Nq+5
25=3Nn+2Nq
substituting Nn=Nq+5
we get
25=3(Nq+5) +2Nq
25= 3Nq+15 +2Nq
Nq=10
q=10/N
so n=15/N
2.4Nn + Nd = -6
Nn=(-6 -Nd) /4
-2Nn+ 3Nd= 24
substituting Nn=(-6 -Nd) /4
we get
-2 [(-6-Nd)/4] +3Nd=24
3 +Nd/2 +3Nd=24
7/2Nd=21
Nd=6
d= 6/N
So n= -3/ N
2007-06-07 06:56:45 · answer #1 · answered by sweet n simple 5 · 0⤊ 0⤋
Nn=Nq+5
25=3Nn+2Nq
25=3(Nq+5)+2Nq
25=3Nq+15+2Nq
10=5Nq
Nq=2
Nn=7
4Nn+Nd=-6 Nd=-6-4Nn
-2Nn+3Nd=24
-2Nn+3(-6-4Nn)=24
-2Nn-18-12Nn=24
-14Nn=42
Nn=-3
Nd=6
2007-06-07 06:55:53 · answer #2 · answered by gordonmorrison 6 · 0⤊ 0⤋
1-
25 = 3(Nq+5) + 2Nq
25 = 3Nq + 15 + 2Nq
25 = 5Nq + 15
10 = 5Nq
Nq = 2
put in 1
Nn = 2 + 5
Nn = 7
2-
Nd = -6-4Nn
-2Nn+3(-6-4Nn) = 24
-2NN -18 - 12Nn = 24
-14 Nn = 24 + 18
-14Nn = 42
Nn = -3
put in 1
4(-3) +Nd = -6
-12 + Nd = -6
Nd = -6 + 12
Nd = 6
2007-06-07 06:54:50 · answer #3 · answered by waheed_hashim 2 · 1⤊ 0⤋
Question 1
let x = Nn and y = Nq
x = y + 5
25 = 3x + 2y
-3x + 3y = -15
3x + 2y = 25------ADD
5y = 10
y = 2 = Nq
x = 7 = Nn
Question 2
Let x = Nn and y = Nd
4x + y = - 6
- 2x + 3y = 24
4x + y = - 6
- 4x + 6y = 48-----ADD
7y = 42
y = 6 = Nd
x = - 3 = Nn
2007-06-07 10:47:05 · answer #4 · answered by Como 7 · 0⤊ 0⤋