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3 years ago

If x=2 and y=5, evaluate the following expression: 2(x+y)

Mathematics

2 answers:

astraxan [27]3 years ago

6 0

Answer:

2(x+y)

x=2 and y=5

2x+2y

Subs

2(2)+2(5)

4+10=14

elixir [45]3 years ago

5 0

Answer:

Step-by-step explanation:

2(x+y)

2(2+5) (keeping 2 in place of x and 5 in place of y)

2(7)

2*7

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Question 7

Ira Lisetskai [31]

Answer:

6.2

Step-by-step explanation:

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3 years ago

Draw a number line and mark on it, if possible, all described points. Numbers that are larger than 2 and smaller than 5.

Flura [38]

Step-by-step explanation:

The number line below describes number larger than 2.

This can be written as {x: x > 2}.

Note that the indicator on 2 is not shaded, this shows that 2 is not included in the set.

..|......|......|......|......|......|......|......|......|......|..

-2....-1.....0....1.....2.....3....4.....5....6.....7

............................O-------------------------->

.......................................(x > 2)

The number line below describes number smaller than 5. This can be written as {x: x < 5}. 5 is not included in this set neither, so, the indicator is also not shaded.

..|......|......|......|......|......|......|......|......|......|..

-2....-1.....0....1.....2.....3....4.....5....6.....7

<-------------------------------------O

...............(x < 5)

LOOK AT THIS EXAMPLE BELOW

..|......|......|......|......|......|......|......|......|......|..

-2....-1.....0....1.....2.....3....4.....5....6.....7

<--------------------------------•

...............(x ≤ 4)

Note that the indicator on 4 is shaded black. It shows that 4 is included in the set.

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4 years ago