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PolarNik [594]
2 years ago
13

Which expression is equivalent to this polynomial? x2 + 12

Mathematics
1 answer:
Elena L [17]2 years ago
3 0

Answer:

Option A is the correct answer

A. (x+2\sqrt3 i)(x-2\sqrt3 i)

Step-by-step explanation:

(x + 2 \sqrt{3} i)(x  -  2 \sqrt{3} i) \\  \\  =  {(x)}^{2}  - (2 \sqrt{3} i)^{2}  \\  \\  =  {x}^{2}  -  {(2)}^{2}  {( \sqrt{3} )}^{2}  {i}^{2}  \\  \\  =  {x}^{2} -12 {i}^{2}  \\  \\  =  {x}^{2}  - 12( - 1) \\ (\because i^2=-1) \\  =  {x}^{2}  + 12

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Snowcat [4.5K]

Answer:

hypotenuse = 5

height = 2

Using Pythagoras theorem,

5² = 2² + m²

=> 25 = 4 + m²

=> 25–4 = m²

=> √21 = m

=> m = 4.58

Value of m is 4.58

8 0
3 years ago
Mrs. Daly's reading classes were surveyed about their reading preferences. The data is summarized in the table below.
geniusboy [140]
Count the total number of students who prefer fiction novels: In 9th grade there are 35, in 10th grade there are 52, so there are 87 students who prefer fictions. The proportion of 10th grade students out of these 87 students is 52/87=0.60 approximately.
8 0
4 years ago
Read 2 more answers
A school has a goal of getting at least 2000 boxtops. They have 872 so far. They have 8 days left to get it. At least how many d
True [87]

Answer:

School needs to collect at least 144 box tops each day to meet their goal.

Step-by-step explanation:

The total requirement of box tops = 2,000

The number of box tops they have already received = 872

So, the box tops left = Total number required- Number of tops received

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Number of days left = 8

So, number of minimum tops needed each day = \frac{\textrm{Total tops required}}{\textrm{Number of days left}}

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Hence, they need to collect at least 144 box tops each day to meet their goal.

5 0
3 years ago
What is the discriminant of the quadratic equation
kkurt [141]
The discriminant is  b^2 -4ac
a = 1
b = -2
c = 4

discriminant = 4 -4 * 1 * 4 =
4  -16 =
 -12
I get MINUS 12 as the answer but that isn't one of the choices.





7 0
3 years ago
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vitfil [10]

Answer:

10 ft

Step-by-step explanation:

To get their total reach, we add the two numbers.

 5⅙

+4⅚

Add integers and fractions

 5⅙

<u>+4⅚ </u>

 9⁶/₆

Convert the fraction to an integer

⁶/₆ = 1

Add the 1 to the 9

9 + 1 = 10 ft

If Madison and Jade lay end to end, they will they reach 10 ft.

6 0
3 years ago
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