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Butoxors [25]
3 years ago
10

Simplify the expression (2y+1)-4y^2+2

Mathematics
2 answers:
Grace [21]3 years ago
8 0

Answer:

(2 + 1 ) − 4 2 + 2

Step-by-step explanation:

1. Eliminate redundant parentheses

( 2 + 1 ) − 4 2 + 2 2 + 1 − 4 2 + 2

2 . Add the numbers  

2 + 1 − 4 2 + 2 2 + 3 − 4 2

3.  Rearrange terms

2 y +3 − 4 2 − 4 2 + 2 + 3

Katena32 [7]3 years ago
5 0

Answer:

-4y^2+2y+3

Step-by-step explanation:

(2y+1)-4y^2+2

2y+1-4y^2+2

-4y^2+2y+1+2

-4y^2+2y+3

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Round off the following numbers to two decimal places <br> 1.2.1) 0,77677<br> 1.2.2) 34,2784682
andre [41]
1) 0.78
2) 34.28
This is because the number in the 3rd decimal place for both numbers is 5 or above so it is rounded up rather than down.
8 0
3 years ago
Find the values of x when y=1
kirill [66]

Answer:

x=1+\sqrt{5}, 1-\sqrt{5}

Step-by-step explanation:

  1. x^{2} -2x-4=0
  2. (x-1)^{2} -1-4=0
  3. (x-1)^{2} -5=0
  4. (x-1)^{2} =5
  5. x-1=\sqrt{5} ,-\sqrt{5}
  6. x=1+\sqrt{5} , 1-\sqrt{5}

<u>FINAL ANSWER</u>

x=1+\sqrt{5} , 1-\sqrt{5}

<u><em>In Decimal Form (Rounded to 3 significant figures)</em></u>

<em>x≈-1.24, 3.24</em>

6 0
3 years ago
Read 2 more answers
a square with an area of 144 cm² is reduced by a factor of 1/3 how long are the new sides of the square?​
olga55 [171]

Answer:

4  cm

Step-by-step explanation:

The square root of 144 is 12 (12 x 12 = 144) so we know our sides of the square are 12 cm²

12 / 3 = 4

(\frac{12}{1} x \frac{1}{3})

The sides of the new square are 4 :)

Hope this helps and is correct, have a nice day! :D

3 0
3 years ago
HELP ASAP DUE TOMORROW
vesna_86 [32]

Answer:

5) P (arrive) + P (not arrive) = 100%   Complements

80% + P( not arrive) = 100%    Substitute thr ralees

P ( not arraive) = 100% - 80%   Isolate the needed

P ( not arrive) = 20%

therefor, the probability of not arriving on time is:-

20%, or 0.20, or 1/5

The complements of arriving on time is not arriving on time.

The probability is equal to 100%

<u>--------------------------------</u>

<u>hope it helps..</u>

<u>have a great day!</u>

7 0
3 years ago
Solve for y <br><br> 2x + y &gt;= 4
babunello [35]
2x + y >= 4
- 2x
y >= 4 - 2x
4 0
3 years ago
Read 2 more answers
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