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musickatia [10]
3 years ago
8

Solve the equation 4x²+4x+1=0​

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

Answer: x = -1/2

4x² + 4x + 1 = 0

⇔ (2x + 1)² = 0

⇒ 2x + 1 = 0

⇔ x = -1/2

Step-by-step explanation:

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25x25 in exponential form
Alexxandr [17]
25 to the 2 or 25^2

Explanation:
There are 2 25’s 25x25, so the amount of exponents is the same as the number of repeated numbers
3 0
1 year ago
Please help! provide thorough explanation and use elimination method!!
ICE Princess25 [194]

Multiply both sides of the second equation by 100 to get rid of the decimals:

0.05<em>n</em> + 0.10<em>d</em> = 1.50

==>  5<em>n</em> + 10<em>d</em> = 150

Multiply both sides of the first equation by -5:

<em>n</em> + <em>d</em> = 21

==>  -5<em>n</em> - 5<em>d</em> = -105

Add the two equations together:

(5<em>n</em> + 10<em>d</em>) + (-5<em>n</em> - 5<em>d</em>) = 150 + (-105)

Notice that the terms containing <em>n</em> get eliminated and we can solve for <em>d</em> :

(5<em>n</em> - 5<em>n</em>) + (10<em>d</em> - 5<em>d</em>) = 150 - 105

5<em>d</em> = 45

<em>d</em> = 45/5 = 9

Plug this into either original equation to solve for <em>n</em>. Doing this with the first equation is easiest:

<em>n</em> + 9 = 21

<em>n</em> = 21 - 9 = 12

So Donna used 12 nickels and 9 dimes.

8 0
3 years ago
The answer for your question is a 1;3 because 16/48=1/3 or 1:3.
tiny-mole [99]
1:3 = 16/48 and 1/3.

Have a nice day! :D
4 0
3 years ago
The towns of Franklin and Chester post their populations on signs just outside of their towns. The signs are
Andre45 [30]

Answer:

year 13

Step-by-step explanation:

franklin's population is growing by 1000 people per year(5% of 20000 is 1000) and Chester is growing by 500 per year so at year 13 franklin will be at 32000 while Chester is at 31500

4 0
2 years ago
Please please help ​
KATRIN_1 [288]

Answer:

g 78 degress

Step-by-step explanation:

6 0
2 years ago
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