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3 years ago

Write an expression to represent the perimeter of 2a-3 and 2a and 3a+1

Mathematics

2 answers:

nata0808 [166]3 years ago

7 0

Answer:

7a-2

Step-by-step explanation:

to represent the perimeter of 2a-3 and 2a and 3a+1

The given sides are 2a-3 and 2a and 3a+1

To find out the perimeter we add all the sides

$Perimeter = 2a-3 +2a+3a+1$

Now combine like terms to add the terms

2a+2a+3a becomes 7a

-3+1 is -2

Now the perimeter becomes

$Perimeter = 2a-3 +2a+3a+1$

$Perimeter = 7a-2$

An expression to represents the perimeter is 7a-2

Effectus [21]3 years ago

3 0

Adding all of the expressions together, (2a-3+2a+3a+1), would equal 7a-2. I hope my answer helps!

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Answer:

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3 years ago

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Doss [256]

Answer:

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Step-by-step explanation:

Assume that when two train pass each other, Lian has traveled x (km)

=> The time Lian has traveled when two trains pass each other is:

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=> When two train pass each other, Yuto has traveled 1,880 - x (km)

=> The time Yuto has traveled when two trains pass each other is:

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As Lian and Yuto board at the same time, so that when two trains pass each other, the time both of them have traveled is equal

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=> 220x = 250 x (1,880 -x)

=> 220x = 470,000 - 250x

=> 470x = 470,000

=> x = 1,000

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6 0

3 years ago

Read 2 more answers

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3 years ago

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givi [52]

Answer:

Step-by-step explanation:

if you work inside parentheses first you get:

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