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Nat2105 [25]
2 years ago
6

Hey can y’all help me

Mathematics
1 answer:
Scrat [10]2 years ago
8 0

\huge{ \rm{Question:}}

What is the internal angle sum of a polygon with 20 sides?

A) 3,240°

B) 3,420°

C) 3,600°

D) 3,780°

\huge{ \rm{Answer:}}

<h3>A) 3,240° </h3>

HOPE THIS HELPS^^

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When p2 – 4p is subtracted from p2 + p – 6, the result is 5p-6 To get p – 9, subtract
jeka57 [31]
(p^{2}  + p - 6) - (x) = p - 9&#10;&#10; is what is asked.

So all you need to do is a value that will result to p - 9.

x = (p^{2} + p - 6) - p + 9  To isolate x we just transpose the values from the other side of the equation and do the opposite operation. 

Combine like terms and just copy the terms that do not have similar expressions:

p will cancel out because p - p = 0
-6 and + 9  will come together because they are like terms: -6 + 9 = 3 
p^{2} does not have a pair so it will remain as is. you will be left with:

p^{2}  + 3

Let us check:

   p^{2} + p - 6
-  p^{2} + 0 + 3  
----------------------------
   0 + p - 9    or p -9               
6 0
4 years ago
Read 2 more answers
What percentage of one hour is fifteen minutes?
Scilla [17]

 1 hour = 60 minutes

15 minutes = (60/15) = 1/4th of an hour

1/4 = 0,25

<span>15 minutes is 25% of an hour</span>

8 0
4 years ago
Your friend incorrectly says the solution to the equation 11.2y - 7.4y=141.36 is y=7.6 what error did your friend make? A) Divid
krek1111 [17]

The correct answer is: D) Subtracted like terms incorrectly

Step-by-step explanation:

Given

11.2y - 7.4y=141.36

The terms 11.2y-7.4y need to be subtracted. But option b is to add them. We will add them and then solve the equation to see if its right.

So adding 11.2y-7.4y

18.6y=141.36

Dividing both sides by 18.6

\frac{18.6y}{18.6}=\frac{141.36}{18.6}\\y=7.6

so by adding the terms instead of subtracting we get y=7.6.

this means that the error was adding 7.4y-11.2y instead of subtracting

The correct method will be:

11.2y - 7.4y=141.36\\3.8y=141.36

Dividing both sides by 3.8

\frac{3.8y}{3.8}=\frac{141.36}{3.8}\\y=37.2

Hence,

The correct answer is: D) Subtracted like terms incorrectly

Keywords: Linear equation, Expression

Learn more about linear expressions at:

  • brainly.com/question/4460262
  • brainly.com/question/4464845

#LearnwithBrainly

8 0
3 years ago
What can you conclude about the signs of two integers whos product i a positive and negative
KengaRu [80]

If two integers product is:

  1. <u>Positive:</u> then the integers were both negative or both positive (same sign)
  2. <u>Negative:</u> then the integers consisted of one negative and one positive (opposite signs)
7 0
3 years ago
Someone please help me!<br><br> 64x squared y cubed + 8xy divided by 4xy squared
Burka [1]
64x^2+8xy/4xy^2. This should be what you’re looking for hopefully
7 0
3 years ago
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