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3 years ago

I WILL MARK BRAINLIEST x + (3x - 2) = 18

Mathematics

2 answers:

Ivan3 years ago

7 0

Answer:

x+(3x-2)=18

Step-by-step explanation:

x+3x-2=18

4x-2=18

4x-2+2=18-2

4x=16

x=4

x is equal to 4

Travka [436]3 years ago

3 0

Answer:

x = 5

Step-by-step explanation:

x + (3x - 2) = 18

x + 3x - 2 = 18

4x - 2 = 18

+2 +2

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

4x = 20

/4 /4

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

x = 5

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-2(x - 14) help me? I need help so I can get my grade up in algebra and pass my class so please help me?

sukhopar [10]

Answer:

$- 2x + 28$

Step-by-step explanation:

1) Expand by distributing terms.

$- 2x - 2 \times - 14$

2) Simplify 2 × -14 to -28.

$- 2x - ( - 28)$

3) Remove parentheses.

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Therefor, the answer is - 2x + 28.

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3 years ago

What is the answer to 2 5/3-2 3/2=

jek_recluse [69]

First, we can convert both of them to improper fractions.

We do that by multiplying the denominator to the whole number, adding it to the numerator, and keeping the denominator.

2 5/3 - 2 3/2

So we have:

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Convert both of them to denominators of 6:

22/6 - 21/6

Subtract the numerators and keep the denominators:

1/6

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3 years ago

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Vsevolod [243]

Answer:

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Step-by-step explanation:

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3 years ago

(5 hundreds 5 tens)×10 in unit form what's the unit form?

Neko [114]

The unit form for that is
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3 years ago

The perimeters of similar triangles are in the same ratio as the corresponding sides

wariber [46]

Answer:

Always

Step-by-step explanation:

Suppose you have triangle ABC with side lengths a, b, c. Suppose that is similar to triangle DEF with side lengths d, e, f.

Now, let k be the ratio of corresponding sides ...

k = d/a

Because the same factor applies to all sides, we also have ...

k = e/b = f/c

That is, if we multiply by the denominators of each of these fractions, we get ...

d = a·k
e =b·k
f = c·k

The perimeter of ΔABC is ...

perimeter(ABC) = a + b + c

The perimeter of ΔDEF is ...

perimeter(DEF) = d + e + f = a·k + b·k + c·k

perimeter(DEF) = k(a + b + c) = k·perimeter(ABC)

k = perimeter(DEF)/perimeter(ABC)

That is, the perimeters are in the same ratio as corresponding sides.

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3 years ago