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max2010maxim [7]
3 years ago
13

What is -2m^2-2mn+8-10m+10n+mn+4n^2-5n simplify to

Mathematics
1 answer:
Mrac [35]3 years ago
4 0
Find like terms and group them
3n and 5n are same and 4n^2 and 4n^2 are same
but 3mn and 5n are not and 3n and 2n^3 are not

group like terms
(-2m^2)+(-2mn+1mn)+(8)+(-10m)+(10n-5n)+(2n^2)
add like terms
(-2m^2)+(-mn)+(8)+(-10m)+(5n)+(2n^2)
-2m^2+2n^2-10m+5n-mn+8 is simplest form

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Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $30.00, how much money is angela sav
Musya8 [376]
You have to calculate percent from the original price. Try it and show the results.
7 0
3 years ago
The ratio of the two numbers is 3:4 and their sum is 420. Find the two numbers
sammy [17]

Answer:

0.008

Step-by-step explanation:

because you have to divide it

3 0
3 years ago
Determine+the+percentile+indicating+the+bottom+ranking+20%.+in+other+words,+what+is+the+dollar+number+that+defines+where+the+low
Aloiza [94]

The dollar number that defines where the lowest values falls is

20% percentile value =$20

This is further explained below.

<h3 /><h3>What is the dollar number that defines where the lowest value falls?</h3>

Generally,  Now we need to determine the 20th percentile ($20). It indicates that we need to locate a dollar amount that marks the point at which the 20 % data has a value lower than that number.

i=(p/100)*n

Where i is the position of p^th

percentile when the data is presented in ascending order.

i=20/100*50

i=1000/100

i=10

Therefore

n=50

p=20

In conclusion, the 10th position for given data is 20,

Therefore, 20% percentile value =$20

Read more about percentile

brainly.com/question/1594020

#SPJ1

5 0
2 years ago
5x^2-4x=6 solve for x
ikadub [295]
Let's solve your equation step-by-step.<span><span><span><span>5x</span><span>(2)</span></span>−<span>4x</span></span>=6</span>Step 1: Simplify both sides of the equation.<span><span><span><span>5x</span><span>(2)</span></span>−<span>4x</span></span>=6</span><span>Simplify: (Show steps)</span><span><span><span><span>10x</span>+</span>−<span>4x</span></span>=6</span><span><span>(<span><span>10x</span>+<span>−<span>4x</span></span></span>)</span>=6</span>(Combine Like Terms)<span><span>6x</span>=6</span><span><span>6x</span>=6</span>Step 2: Divide both sides by 6.<span><span><span>‌<span><span>6x</span>6</span></span>‌</span>=<span><span>‌<span>66</span></span>‌</span></span><span>x=1</span>Answer:<span>x=<span>1</span></span>
8 0
3 years ago
I need to find all real values of x from this inequality x^2&gt;2x-2 and also this question x^2&gt;2x+2. I need the answer fast
sergeinik [125]

x^2\gt2x-2

x^2-2x+2\gt0

You are essentially asking at this point where is the quadratic function greater than 0. To get the interval find the roots. Between the roots the function is guaranteed to be LESS THAN zero. Everywhere else the function is greater than 0.

x^2-2x+2=0

Use Vieta's rule to get the roots,

(x-1)(x-1)=0

Both roots are the same so no value is less than 0 which means all values except at the point of root are strictly greater, the point of root is at x_{1,2}=1 which means the set for which the quadratic function is greater than 0 is \mathbb{R}-\{1\} "all real numbers except 1".

To convert this into interval notation use all numbers up to 1 but not including and all numbers after 1 but not including,

(-\infty,1)\cup(1,\infty)

Hope this helps :)

7 0
3 years ago
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