The difference between 2 numbers is 8. The sum of the two numbers is 20. Find the number.

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

8 0

Answer:

14, 6

Step-by-step explanation:

x-y =8 =>x=y+8

x+y=20

y+8 +y=20

2y=20 - 8

2y=12

y=12 :2

y=6 (the second number

x=6 +8 =14 (the first number

Igoryamba3 years ago

3 0

Answer:

The numbers are 6 and 14

Step-by-step explanation:

Let the two numbers be x and y

x-y = 8

x+y = 20

Add the two equations

x-y = 8

x+y = 20

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

2x = 28

Divide by 2

2x/2 = 28/2

x = 14

Subtract the two equations

x-y = 8

-x-y = -20

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

-2y = -12

Divide by -2

-2y/-2 = -12/-2

y = 6

The numbers are 6 and 14

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Use the definition of the derviative to compute the derivative of f(x)= 1- 7x^2 at the specific point x=2.

GaryK [48]

Answer:

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Step-by-step explanation:

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