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OLEGan [10]
4 years ago
12

2mn+4n^2 and 5m^2-7mn

Mathematics
2 answers:
Bingel [31]4 years ago
8 0

Answer:

2mn+4n^2 and 5m^2-7mn

Step-by-step explanation:

<em>The steps to follow to carry out this operation is to bring together those who are equal: 2mn + 4n ^ 2 and 5m ^ 2-7mn </em>

<em>We have</em>: 2mn and -7mn

<em>Therefore</em>: 5m ^ 2 + (2-7) mn + 4n ^ 2

<u><em>What will result in</em></u>: <u>5m ^ 2 - 5mn + 4n ^ 2</u>

Katen [24]4 years ago
5 0
Find the sum 2mn + 4n2 and 5m2 - 7mn 

<span>5m^2 + (2-7)mn + 4n^2 </span>
<span>=5m^2 - 5mn + 4n^2 </span>
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In a right triangle the lengths of the legs are a and b. Find the length of a hypotenuse, if: a=3, b=4;
prohojiy [21]

Answer:

The hypotenuse is 5

Step-by-step explanation:

We can use the Pythagorean theorem to find the hypotenuse of a right triangle

a^2 +b^2 =c^2 where a and b are the legs and c is the hypotenuse

3^2 +4^2 =c^2

9+16=c^2

25=c^2

Take the square root of each side

sqrt(25) =sqrt(c^2)

5 = c


6 0
3 years ago
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What is the mean of the data set?
olga nikolaevna [1]

Answer:

183

Step-by-step explanation:

125+141+213+155+281=915

915 divided by 5=183


3 0
4 years ago
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Just answer the question <br>will mark the answer as brilliant answer​
Soloha48 [4]

Answer:

I believe it would be 376.65 for flooring for a 4.5x3.6 large room

4 0
3 years ago
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A cable installer charges $40. an hour plus a $50.00 service charge. Figure the function c(h) = ?
Hitman42 [59]

Answer:

c(h) = 40*h + 50

Step-by-step explanation:

Let h be the variable that represents the number of hours

As the cable operator charges $40.00 for an hour so for h hours, the expression will be 40*h

And  

Lastly, he has to charge $50.00 must as service charge,

As the number of hours is variable here so the function will be in terms of hours.

So the resulting function will be:

c(h) = 40*h + 50

3 0
4 years ago
I need serious help with this equation.​
garri49 [273]

Answer:

First, it’s already telling you that you need to find d, which is the opposite of degree 59. This means you have to do the exact thing for degree 37. Since it’s already telling you to use sine, you need to look at the opposite side of 37 which is 98.4.

So ? is 98.4

Now, you need to find sin 59 / d.

First, plug in sin 98.4 sin (37) in your calculator (make sure it’s in degree setting)

The result is 59.2.

Now, 59.2 = sin 59 / d.

Switch sides like this: d = 59.2 sin (37)

And the answer is approximatley d = 35.6

? = 98.4

d = 35.6

8 0
3 years ago
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