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mars1129 [50]
3 years ago
7

8x-6 greater than 12+2x ?????????????

Mathematics
1 answer:
Alja [10]3 years ago
8 0

Answer:

8x-6>12+2x          

-8           -8

-6>12-6x

-12   -12         -12 both sied

18>-6x

18/-6>x

3>x

Step-by-step explanation:

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2/x + 3/y = 13 ; 5/x - 4/y = -2​
Tomtit [17]

Given that

(2/x)+(3/y) = 13--------(1)

(5/x)-(4/y) = -2 -------(2)

Put 1/x = a and 1/y = b then

2a + 3b = 13 ----------(3)

On multiplying with 5 then

10a +15 b = 65 -------(4)

and

5a -4b= -2 ----------(5)

On multiplying with 2 then

10 a - 8b = -4 -------(6)

On Subtracting (6) from (4) then

10a + 15b = 65

10a - 8b = -4

(-)

_____________

0 + 23 b = 69

______________

⇛ 23b = 69

⇛ b = 69/23

⇛ b =3

On Substituting the value of b in (5)

5a -4b= -2

⇛ 5a -4(3) = -2

⇛ 5a -12 = -2

⇛ 5a = -2+12

⇛ 5a = 10

⇛ a = 10/5

⇛ a = 2

Now we have

a = 2

⇛1/x = 2

⇛ x = 1/2

and

b = 3

⇛1/y = 3

⇛ y = 1/3

<u>Answer :-</u>The solution for the given problem is (1/2,1/3)

<u>Check</u>: If x = 1/2 and y = 1/3 then

LHS = (2/x)+(3/y)

= 2/(1/2)+3/(1/3)

= (2×2)+(3×3)

= 4+9

= 13

= RHS

LHS=RHS is true

and

LHS=(5/x)-(4/y)

⇛ 5/(1/2)- 4/(1/3)

⇛(5×2)-(4×3)

⇛ 10-12

⇛ -2

⇛RHS

LHS = RHS is true

5 0
2 years ago
A bouqet had 10 flowers and sold for $90 which is a rate of $_ per flowers
jolli1 [7]

Answer: $9 per flower


Step-by-step explanation: you divide the cost by how many of each. In this case $90 and 10 flowers. So you divide 90 by 10. This gives you 9. So the answer is $9 per flower.


5 0
3 years ago
Read 2 more answers
Pleasee help i put it as 24 points and I will mark brainliest thank you
White raven [17]
They will need to be it on day 250 because 500/2=250

Hope this helps

Have a happy holidays
3 0
2 years ago
Read 2 more answers
mollys basic cell phone plan charges $35.99 for service plus $0.2 per minute beyond the included 250 minutes in the plan. how mu
Finger [1]
$35.99 includes 250 'free' minutes. anything over that is $0.2 per minute. So if she used 440 total minutes that means 440 minus 250 free minutes = 190 minutes over. 190 minutes times $0.2/minute = $38 extra

Total = 35.99 + 38 = 73.99
3 0
2 years ago
A group of 25 employees want to go out for a group dinner. 18 employees want to go to Restaurant A. 7 employees want to go to Re
Pie

Answer:

28 percent

Step-by-step explanation:

i dont know the rest

8 0
2 years ago
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