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serious [3.7K]
3 years ago
10

5x + 2y = 8

Mathematics
1 answer:
notsponge [240]3 years ago
5 0
Multiply the equation x+y =4 by -5
The resultant would be- 
-5x -5y = -20
Adding this with 5x +2y =8
Then, the resulting would be, 
-3y = -12
∴ y=4
and x=4-4 =0
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Write the first 6 terms of the arithmetic sequence whose first term is 8 and has a common difference of 2
soldier1979 [14.2K]

Answer: The first 6 terms are = 8, 10, 12,14,16,18

Step-by-step explanation:

The NTH term of an Arithmetic Sequence is given as

an = a1 + (n - 1 ) d

where a1 = First term  given as 8 and

d=  common difference given as 2

Therefore  We have that

the first term

an = a1 + (n - 1 ) d = 8+(1-1) 2

a1= 8

second term=

an = a1 + (n - 1 ) d= a2= 8 + (2-1) 2

= 8+ 2(1) = 10

3rd term

an = a1 + (n - 1 ) d= a3= 8 + (3-1) 2

= 8+ 2(2)= 8 + 4=12

4th term

an = a1 + (n - 1 ) d= a4= 8 + (4-1) 2

= 8+ 2(3)= 8+6=14

5th term

an = a1 + (n - 1 ) d= a5= 8 + (5-1) 2

= 8+ 2(4)=8+ 8=16

6th term

an = a1 + (n - 1 ) d= a6= 8 + (6-1) 2

= 8+ 2(5)=8 +10 =18

6 0
3 years ago
PLEASE HELP DUE TODAY !
igor_vitrenko [27]

Answer:

let x be chips and y be sodas

8x + 4y = 5 ---> for the first hint

4x + 8y = 7------> second hint

0.25 cents is how much chips costs

and 0.75 cents is how much sodas costs

5 0
3 years ago
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Zepler [3.9K]
3 times 6 18 and do that 6 times add

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ra1l [238]

Answer: -14v-24

Step-by-step explanation:

2v-8(3+2v)

2v-(24+16v)

2v-24-16v

-14v-24

3 0
2 years ago
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erastova [34]

Answer:

the first one is 37

the second one is 36

the third one is 27

Step-by-step explanation:

4 0
3 years ago
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