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liraira [26]
4 years ago
11

Which expression is equivalent to (3x-5y)+ (x + 2 y)?

Mathematics
1 answer:
Stells [14]4 years ago
5 0

Question is Incomplete; Complete question is given below.

Which expression is equivalent to (3x-5y)+(x+2y)?

1. 4x-7y

2. 4x-3y

3. 4x+3y

4. 4x+7y

Answer:

2. 4x-3y

Step-by-step explanation:

Given:

(3x-5y)+(x+2y)

We need to simplify the given expression;

Solution on simplifying the given expression we get;

First we will apply distributive property to remove the parenthesis we get;

3x-5y+x+2y

Now Combining the like terms together we get;

3x+x-5y+2y

Now adding and subtracting like terms we get;

4x-3y

Hence the equivalent expression for given expression is 4x-3y.

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The cost of 5 scarves is $31.25. What is the unit price?
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Answer:

Step-by-step explanation:

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Find the missing lengths:<br> LO=5 and OK=4, find OH and KH.
hodyreva [135]

Answer:

The length of KH is 6 units and OH is 6.3 units.

Step-by-step explanation:

Given the figure with lengths LO=5 and OK=4. we have to find the length of  OH and KH.

In ΔLOH

By Pythagoras theorem

LH^2=LO^2+OH^2\\\\LH^2=5^2+OH^2 → (1)

In ΔKOH,

KH^2=OH^2+OK^2\\\\KH^2=OH^2+4^2  → (2)

In ΔKHL,

KL^2=LH^2+KH^2

Using eq (1) and (2), we get

KL^2=5^2+OH^2+OH^2+4^2

9^2=25+2OH^2+16

⇒ 2OH^2=81-25-16=40

⇒ OH=\sqrt{20}=6.324\sim6.3units.

Put the above value in eq 2, we get

KH^2=20+4^2=36

⇒ KH=6 units.

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Answer:

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Step-by-step explanation:

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