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RUDIKE [14]
3 years ago
7

The sum of two numbers is 19, and their difference is 55. What are the two numbers?

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer:

37 and -18

Step-by-step explanation:

Let one number be x and other y

1 x + 1 y = 19 .............1

1 x -1 y = 55 .............2

Eliminate y

multiply (1)by 1

Multiply (2) by 1

1 x 1 y = 19

1 x + -1 y = 55

Add the two equations

2 x = 74

/ 2

x = 37

plug value of x in (1)

1 x + 1 y = 19

37 + 1 y = 19

1 y = 19 -37

1 y = -18

y = -18

37 and -18

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Classify the decimal forms of 3/12 and and 2/9 as repeating or as repeating or terminating.​
andre [41]

Answer:

3/12: terminating; 2/9: repeating

Step-by-step explanation:

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3 years ago
If f(x)=2x+7 and g(x)=11x-4, find (f+g)x.
klemol [59]

Answer:

(f+g)(x) = 13x + 3

Step-by-step explanation:

Rewrite  f(x)=2x+7 and g(x)=11x-4 in columns, as follows:

f(x)=2x+7

+g(x)=11x-4

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

Now add each column separately.

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