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MrRissso [65]
3 years ago
14

I need help answering

Mathematics
1 answer:
Lady_Fox [76]3 years ago
8 0
Not sure I’ll be back with the anwer I need to get my calculator
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He center of a circle represented by the equation (x + 9)2 + (y − 6)2 = 102 is
maksim [4K]

centre = ( - 9, 6)

the equation of a circle in standard form is

(x - a)² + (y - b)² = r²

where (a , b) are the coordinates of the centre and r is the radius

(x + 9)² + (y - 6)² = 102 is in this form

with centre = ( - 9 , 6 )


4 0
3 years ago
Read 2 more answers
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  .
____________________________________
7 0
3 years ago
Write the quadratic equation in standard form:
Andrei [34K]

Answer:

Step-by-step explanation:

2x^2 + 6x - 4 = 0

8 0
3 years ago
A basketball hoop is 30% off the sticker price of $125.30. How much is the discount?
EleoNora [17]
37.59
Just multiple .3 x 125.30
6 0
3 years ago
What is a parallelogram Grade 7?
marissa [1.9K]

Answer:

A parallelogram is a two-dimensional geometrical shape whose sides are parallel to each other. It is a type of polygon having four sides (also called quadrilateral), where the pair of parallel sides are equal in length. The Sum of adjacent angles of a parallelogram is equal to 180 degrees.

Step-by-step explanation:

8 0
1 year ago
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