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3 years ago

Find two numbers if there sum is 7.2 and their difference is 2.7

Mathematics

2 answers:

Sidana [21]3 years ago

6 0

Answer:

2.25 and 4.95

Step-by-step explanation:

x + y = 7.2

x - y = 2.7

x = 7.2 - y

x - y = 2.7

(7.2 - y) - y = 2.7

7.2 - 2y = 2.7

-2y = 2.7 - 7.2

-2y = -4.5

-2y/-2 = -4.5/-2

y = 2.25

x + y = 7.2

x + 2.25 = 7.2

x = 7.2 - 2.25

x = 4.95

Check: 4.95 and 2.25

x + y = 7.2

(4.95) + (2.25) = 7.2

7.2 = 7.2

x - y = 2.7

(4.95) - (2.25) = 2.7

2.7 = 2.7

sveta [45]3 years ago

3 0

Answer:

x+y=7.2

x-y=2.7

Step-by-step explanation:

equation

x+2.7+x=7

2x=4.3

x=4.3/2

y=7-4.3/2

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Hi, to answer this question we have to write an equation:

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Answer:

The answer is;

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Step-by-step explanation:

The given parameter are;

Triangle ΔFGH = Right triangle

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The measurement required = The measure of segment $\overline {FG}$ = x

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Therefore, ∠FGH = 180° - ∠HFG - ∠FHG = 180° - 90° - 28° = 62°

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By sine rule, we have;

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