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goldfiish [28.3K]
4 years ago
12

Does anyone know how to do this?

Mathematics
1 answer:
Svetach [21]4 years ago
3 0
Answer: Choice B) y = (x+4)^2 - 1

-------------------------------------------------------------------

Reasoning:

The vertex is (h,k) = (-4,-1) so h = -4 and k = -1

In each answer choice, a = 1. 

Plug a = 1, h = -4 and k = -1 into the equation below and simplify

y = a(x-h)^2 + k
y = 1(x-(-4))^2 + (-1)
y = (x+4)^2 - 1
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In th fig , d is the mid point of ab and cd is perpendicular to ab. prove abc is congurence to bcd.​
Alchen [17]

   Statement                            Reason

-------------------------------------------------------------------------------------

1. CD=DC                        Reflexive Property

2. D-midpoint of AB                Given

3. AD=BD                         Definition of Midpoint

4. CD⊥AB                                  Given

5. m<CDA=m<CDB         Definition of Perpendicular Lines

6. ΔACD≅ΔBCD                           SAS

3 0
3 years ago
The mean of five numbers 3,7,9,12, and x is 8. Find the value of x
jeyben [28]
Answer:  " x = 9 "  .
____________________________________
Explanation:
____________________________________
To calculate the mean:
____________________________________
The mean = 

     {the sum of all the values in the number set} ÷ 

     {the number of values in the data set} ;
____________________________________
 To solve for "x" ;
____________________________________
Given that the "mean" is:  "8" ;
____________________________________
            8  =  { 3 + 7 + 9 + 12 + x }  /  5  ;
____________________________________ 
    ↔  { 3 + 7 + 9 + 12 + x }  /  5   =  8  ;
____________________________________
            →  { 3 + 7 + 9 + 12 + x }  = 8 * 5  ;
____________________________________
            →  { 31 + x } = 40  ;
____________________________________
            ↔   x + 31  = 40  ;
____________________________________
       Subtract "31" from EACH SIDE of the equation; to isolate "x" on one side of the equation; and to solve for "x" ;
____________________________________
            →   x + 31 − 31  =  40 − 31  ;

                       →  x = 9  .
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7 0
3 years ago
Does 8,6,4 contain numbers that are less than 10
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6 0
3 years ago
Each leg of a 45 45 90 triangle measures 12cm, what is the length of the hypotenuse
erastova [34]

Answer:

12√2

Step-by-step explanation:

Use the Pythagorean Theorem here:

(12 cm)^2 + (12 cm)^2 = 288 cm^2.  

The length of the hypotenuse is √288 = (√4)(√72) = 2(√36)(√2) = 12√2

8 0
3 years ago
Read 2 more answers
(Picture) MULTIPLYING POLYNOMIALS AND SIMPLIFYING EXPRESSIONS PLEASE HELP!!!!
Mrrafil [7]

Answer:

  • -32x² +8x -8
  • See below about the process

Step-by-step explanation:

The simplified expression is ...

  3x(x -12x) +3x² -2(x -2)²

  = 3x(-11x) +3x² -2(x² -4x +4) . . . . . simplify contents of parentheses

  = -33x² +3x² -2x² +8x -8 . . . . . . . .eliminate parentheses

  = (-33 +3 -2)x² +8x -8 . . . . . . . . . . group the coefficients of like terms

  = -32x² +8x -8

8 0
3 years ago
Read 2 more answers
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