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rjkz [21]
3 years ago
9

Combine like terms to simplify the expression: 2/5k-3/5+1/10k

Mathematics
2 answers:
charle [14.2K]3 years ago
8 0

Answer:

1/2k-3/5

Step-by-step explanation:

Vlad1618 [11]3 years ago
4 0

Answer:

Step-by-step explanation:

2/5 k - 3/5 + 1/10 k

like denominators

4/10 k + 1/10 k - 3/5

5/10k - 3/5

1/2k - 3/5

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Evaluate. -|-7 + 3| <br> 4<br> -4<br> -10
agasfer [191]
Your answer is 4

You have to use the distribute property and distribute the - to the -7 and the 3

The -7 will become and the 3 will become -3

Then you add those together and when you add a negative to a positive you basically subtract

So 7+-3 is 4

A is your answer
3 0
3 years ago
How can the equation of a parabola be derived when given the focus and the directrix?
pickupchik [31]
The distance between any point (x0,y0) on the parabola and the focus (m,n) is the same as the distance between (x0,y0) and the directrix line ax+by+c. The distance between (x0,y0) and focus (a,b) is \sqrt((x-m)^2+(y-n)^2). The distance between (x0,y0) and ax+by+c is |ax0+by0+c|/\sqrt(m^2+n^2).  Equalize these two expressions.
4 0
3 years ago
Is (-a + b)² = a² - 2ab + b² right or wrong, and why?
antiseptic1488 [7]

Answer:

\huge\boxed{\sf Right.}

Step-by-step explanation:

(-a+b)^2

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

= a² - 2ab + b²

Hence, it has been proved that (-a + b)² = a² - 2ab + b².

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
6 0
2 years ago
How to use exponents
Ira Lisetskai [31]


5
2 = 32


Exponents are like a simplified or easier version of multiplying
2*2*2*2*2

People use exponents in real life. For an example, they use it for finding cubic feet ,square feet, or area of something or an object.

Sorry if I am bad at explaining this or if I confused you

7 0
3 years ago
ות
Ulleksa [173]

Answer:

dont use this

Step-by-step explanation:

oinf+euiv=4

7 0
3 years ago
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