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sergiy2304 [10]
3 years ago
15

Solve 2x2 + 8x + 10 = 0. using this model to he X = -b+ ✓ 62 - 4ac 2a

Mathematics
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

x can have two complex solutions, which are:

-2 + i

-2 - i

Step-by-step explanation:

2x² + 8x + 10 = 0

4x² + 16x + 20 = 0

4x² + 16x + 16 = -4

(2x + 4)² = -4

2x + 4 = √-4

2x =  -4 ± i√4

2x = -4  ± 2i

x = -2 ± i

So x is equal to -2 + i and -2 - i.

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Simplify the following expression. 11^6/11^4 A. B. C. D.
maks197457 [2]

The solution of the given expression will be 121. The correct answer is option A.

The complete question is given below:-

Simplify the following expression. 11^6/11^4

A. 121   B. 1331   C. 11  D. 22

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.

The solution of the given expression will be given as follows:-

\dfrac{11^6}{11^4}=11^2

\dfrac{11^6}{11^4}=121

Therefore the solution of the given expression will be 121. The correct answer is option A.

To know more about expression follow

brainly.com/question/723406

#SPJ1

6 0
2 years ago
The numbers 38 and 41 are rounded to the nearest ten and then multiplied to estimate the product. What is the best estimate of 3
Rudik [331]

Answer:

Jeez this is a big question

Step-by-step explanation:

1. if they are rounded to the nearest 10 that would mean that it is actually

40 * 40

40 * 40 is 1600. The answer for #1 is 1600

2. its just asking what 21 x3 is, 21x3 is 63

3. All you do for this is 20*23

20 * 23 is 460

4. 42 * 31 is 1302

5. 22 * 95 = 2090

6. You do 20x2 which is 40 and then you do 8x2 which is 16

Adding

then you have 40 + 16 = 56

Subtracting

40 - 16 = 24

Multiplying

40 * 16 = 640

Dividing

40/16 = 2.5

7. 33x2 is 66

8. 57* 4 is 228

9. 128 * 11 is 1408 but if you round the 11 to the nearest 10, that would be 10, then if you round the 128 to the nearest 10, that would be 130, and then 130 * 10 is 1300

3 0
2 years ago
Which is the best estimate of the measure of this angle?
Pani-rosa [81]

Answer:

That angle looks like a reflex angle

Step-by-step explanation:

I think D is the answer, since Reflex angles are ALWAYS be more than 180 and less than 360

I hope this helps! So srry if its wrong

5 0
2 years ago
In the penny game exercise, why do you think it takes longer for one person to flip five batches of two pennies then one batch o
Nataly [62]

It takes longer for one person to flip five batches of two pennies than one batch of ten pennies, mainly for a simple reason: although 5 x 2 is equal to 10, that is, it will take the same time to flip the coins, 5 batches is greater than 1 batch, which will take longer to manipulate each of these, increasing the total time.

Learn more about maths in brainly.com/question/21477139

4 0
2 years ago
List of particle products of 40 × 28
katrin [286]
40x28

First take 0x8=0
Then take 40*8=320
Next, 20*0=0
Then, 40*20=800
Finally, add them all together to get 1120!
5 0
3 years ago
Read 2 more answers
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