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mr_godi [17]
3 years ago
14

5x+y=27 y=4x using substitution method

Mathematics
2 answers:
Feliz [49]3 years ago
7 0
Substitute 4x for y, and solve for x;
5x + (4x) = 27
9x = 27
x = 3
Substitute 3 in for x in the first equation and solve for y;
5(3) + y = 27
15 + y = 27
y = 12
Dvinal [7]3 years ago
4 0
 5x + y = 27
substitute: 5x + 4x = 27
combine: 9x = 27
divide (by 9): x = 3
You might be interested in
What is the first term of the geometric sequence whose fifth term is 1/24 and tenth term is 1/768
Neporo4naja [7]
An=a1r^(n-1)

given
a5=1/24
a10=1/768

we know that
a5=1/24=a1r^(5-1) and
a10=1/768=a1r^(10-1)

so
1/24=a1r^4
1/768=a1r^9

(a1r^9)/(a1r^4)=r^5=(1/768)/(1/24)=1/32

r^5=1/32
take 5th root of both sides
r=1/2

we have
a5=a1r^4=1/24
evaluate r^4 or (1/2)^4
1/16
a1(1/16)=1/24
times both sides by 16/1
a1=16/24
a1=2/3

the first term is 2/3



7 0
3 years ago
Can anyone help me with this problem
lapo4ka [179]
I believe that it is 1. 20 degrees and 2. 80 degrees
3 0
3 years ago
Pense un numero lo multiplique por 7 al resultado le sume 4 obtube 32
irina [24]
7x+4=32
7x=28
X=4
Creo que así se ase
5 0
3 years ago
Can someone please HELP me on how to do this
frutty [35]

Answer:

4)x= g-c

5)x =u+k

6)x = g-c

7)a=\frac{k}{u}

8)x= \frac{g}{c}

9)a=\frac{4}{12m}

10)x= \frac{2c+3}{3}

11)a=\frac{n+p}{m}

12)a= \frac{ub}{k}

13)a= d -r + c

14)x=\frac{np}{m}

Step-by-step explanation:

4) g= c+x

x= g-c

5) u=x-k

x =u+k

6)g = c+x

x = g-c

7) u=\frac{k}{a} \\\\a=\frac{k}{u}

8) g=xc

x= \frac{g}{c}

9) 12am = 4

a=\frac{4}{12m}

10)-3x+2c = -3

2c = -3 +3x

2c +3 = 3x

x= \frac{2c+3}{3}

11) am= n+p

a=\frac{n+p}{m}

12)u = \frac{ak}{b} \\\\u*b = ak\\\\a= \frac{ub}{k}

13)a-c = d-r

a= d -r + c

14)xm= np

x=\frac{np}{m}

7 0
3 years ago
2. A businessman starts
Leokris [45]

Answer:

0

Step-by-step explanation:

He loses it all in 2 hours

4 0
3 years ago
Read 2 more answers
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