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Elina [12.6K]
3 years ago
6

Which expressions are differences of squares?

Mathematics
1 answer:
Lina20 [59]3 years ago
8 0
Difference of 2 perfec squares is
(a^2)-(b^2)




if the exponents are both even and the coeficient (the number in front) are perfect squares, then it is difference t 2 perfect squares

first one
8 is not perfect square


2nd one
(4e^4)^2-(9g^2)^2


third
25 is odd, so it cannot be split up into 2 nice numbers

4th
(11m^9)^2-(3n^5)^2
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Why would they chose a dog at random?
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3 years ago
a book has 12 chapters. the mean length of the chapters is 40 pages. how many pages are there in 12 chapters?
notka56 [123]

Answer:

n

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12

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X

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40

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Horsepower and watts are units of measure of
Leni [432]

The 2 horsepower is equal to 1492 watts.

Given that horsepower and watts are units of measure of power and they are directly proportional such that 5 horsepower is equal to 3730 watts.

Horsepower is a unit of measurement of power, or speed at which work is done, usually related to the power of an engine or motor. power is calculated by multiplying force (in pounds) by  speed (in feet per second).

Let H= horsepower, W=watt

As we are given horsepower is directly proportional.

So, the relation is W=kH where k is constant.

Here, H=5 and W=3730.

By substituting the value of W and H we will find the value of k,  we get

3730=k×5

3730/5=k

746=k

Now, substituting the value of k in relation and we get

W=746H

We have to find the power of 2 horsepower.

So, we will substitute H=2 in above relation, we get

W=746×2

W=1492 watts.

Hence, the 2 horsepower is equal to 1492 watts when 5 horsepower is equal to 3730 watts.

Learn more about horsepower from here brainly.com/question/1335872

#SPJ4

7 0
2 years ago
Identify the line(s) that are parallel to y=2x-5
zalisa [80]

Answer:

Any line that has 2x as the slope is parallel

Step-by-step explanation:

It is the rule of linear function where if the slope is equal the line/ linear function is always parallel.

6 0
3 years ago
F is the function f(×)= 2x+5<br> Find f(3)
tatiyna

Answer:

f(3)=11

Step-by-step explanation:

f(x) = 2x + 5

to find f(3) we simply plug in 3 where ever x is

So f(3) = 2(3) + 5

==> multiply 2 and 3

f(3) = 6 + 5

==> add 6 and 6

f(3) = 11

5 0
2 years ago
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