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kodGreya [7K]
3 years ago
15

Solve the following quadratic equation. (x+12)^2=1 A. x = 11 and x = 13 B. x = -11 and x = -13 C. x = -11 and x = 13 D. x = 11 a

nd x = -13
Will make brainiest!!!
Mathematics
1 answer:
sveticcg [70]3 years ago
7 0

Answer:

b

Step-by-step explanation:

(x+12)^2=1

or

(x+12)= +or - 1

when

x+12=1

x=1-12 =-11

when

x+12=-1

x=-1-12 =-13

then

x=-11 and x= -13

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Question :
Darya [45]

Answer:

1156

Step-by-step explanation:

We know that,

( a + b ) ² =  a² + 2ab + b²

We can follow the same method to find the value of this.

12² + 22²

( 12 + 22 ) ²

12² + 2 × 12 × 22 + 22²

144 + 24 × 22 + 484

144 + 528 + 484

672 + 484

<u>1156</u>

Let me know if you have any other questions. :)

6 0
2 years ago
15 points! The data set shows the weights of pumpkins, in pounds, that are chosen for a photograph in a farming magazine. The re
vladimir2022 [97]

Answer:

Step-by-step explanation:

a). Mean of the given data set = \frac{32+28+18+40+22}{5}

                                                  = 28

b).   x                     x-\overline{x}               (x-\overline{x})^2

     32          32-28 = 4                    16

     28          28 - 28 = 0                  0

     18           18 - 28 = -10                100

     40          40 - 28 = 12                 144

     22          22 - 28 = -6                 36

                                                 \sum({x-\overline x})^2 =  296          

c). Standard deviation = \sqrt{\frac{\sum (x-\overline{x})^2}{n}}

                                     = \sqrt{\frac{296}{5} }

                                     = 7.69

d). Mean of the new set of weights = \frac{32+33+34+35+36}{5}

                                                          = 34

   Since mean of the data set is more close to each data, standard deviation will be less than the deviation given in part (c).

7 0
2 years ago
Find the difference.<br><br> (3x3−2x2+4x−8)−(5x3+12x2−3x−4)=
Lunna [17]

Answer:

-2x³ - 14x² + 7x - 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(3x³ - 2x² + 4x - 8) - (5x³ + 12x² - 3x - 4)

<u>Step 2: Simplify</u>

  1. [Distributive Property] Distribute negative:                                                    3x³ - 2x² + 4x - 8 - 5x³ - 12x² + 3x + 4
  2. Combine like terms (x³):                                                                                   -2x³ - 2x² + 4x - 8 - 12x² + 3x + 4
  3. Combine like terms (x²):                                                                                   -2x³ - 14x² + 4x - 8 + 3x + 4
  4. Combine like terms (x):                                                                                    -2x³ - 14x² + 7x - 8 + 4
  5. Combine like terms:                                                                                         -2x³ - 14x² + 7x - 4
7 0
3 years ago
Square root of 87 to the nearest 10th
kogti [31]

Answer:

9.3

Step-by-step explanation:

Step 1: Calculate. We calculate the square root of 87 to be: √87 = 9.32737905308882.

Step 2: Reduce. 9.32.

Step 3: Round. Round 9.32 so you only have one digit after the decimal point to get the answer: 9.3.

3 0
3 years ago
Please help!! <br> Will mark and star!!
Kamila [148]
The answer is B. please mark me as brainlyest.
3 0
2 years ago
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