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2 years ago

2. Two numbers are in the ratio of 3 : 5. If 8 is added

Mathematics

1 answer:

Vesnalui [34]2 years ago

3 0

Answer:

x/y = 3/5

=> x = (3/5)y (1)

(x + 8)/(y + 8) = 2/3

=> 3*(x + 8) = 2*(y + 8)

=> 3x + 24 = 2y + 16

=> 3x - 2y = -8 (2)

From (1) and (2), we have:

=> 3*(3/5)y - 2y = -8

=> (-1/5)y = -8

=> y = 40

=> x = (3/5)*y = (3/5)*40 = 24

=> Solution: x = 24, y = 40

Hope this helps!

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If the average of L numbers is m. What is the sum of these numbers?

Mamont248 [21]

Answer:

Step-by-step explanation:

average = (sum of numbers)/(number of numbers)

Solve the equation for "sum of numbers":

sum of numbers = average * number of numbers

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sum of numbers = Lm

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2 years ago

-5x -10 >30 help Hehehehehe.

Mnenie [13.5K]

Answer:

x<-8

Step-by-step explanation:

-5x-10>30

(add 10 to both sides)

-5x-10+10>30+10

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(dividing through by -1 changes the sign of the inequality from "<" to ">")

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(dividing through by 5)

$\frac{5x}{5}$ < $\frac{-40}{5\\}$

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3 years ago

Rewrite in simplest terms: 3(2p - 5) - 6p

mylen [45]

-15

Reason:

First, use the distributive property

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2 years ago

Randomly meeting someone whose social security number ends in the same digit as yours

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3 years ago

Read 2 more answers

Enter the x-coordinate of the solution to this system of equations

Kitty [74]

Answer:

equation 2into minus 3 into equation 1

8x+ 3y= -28

-3x-3y=18

----------------

5x=10

x =2

put value of y in equation 2

8 into 2+3y=-28

16+3y= -28

3y= -28+16

3y= -12

y= -4

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2 years ago