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o-na [289]
3 years ago
12

What is 8x-2(x+9)=x+47​

Mathematics
2 answers:
mars1129 [50]3 years ago
5 0

Answer:

X=13

Step-by-step explanation:

8x-2(x+9)=x+47

8x-2x-18=x+47

6x-18=x+47. I - 1x +18

5x=65

X=13

balandron [24]3 years ago
5 0

Answer:

X=13

Step-by-step explanation:

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Fit a quadratic function to these three points:<br> (-2,8), (0, -4), and (4, 68)<br> Respuesta
zloy xaker [14]

Answer:

f(x) = 4x^2 + 2x - 4.

Step-by-step explanation:

Let the quadratic function be y = f(x) = ax^2 + bx + c.

For the point (-2, 8)  ( x = -2 when y = 8) we have:

a(-2)^2 + (-2)b + c = 8

4a - 2b + c = 8      For (0, -4) we have:

0 + 0 + c = -4   so c = -4.    For (4, 68) we have:

16a + 4b + c = 68  

So we have 2 systems of equations in a and b ( plugging in c = -4):

4a - 2b - 4 = 8

16a + 4b - 4 = 68

4a - 2b = 12

16a + 4b = 72    Multiplying 4a - 2b = 12 by 2 we get:

8a - 4b = 24  

Adding the last 2 equations:

24a = 96

a = 4

Now plugging a = 4 and c = -4 in the first equation:

4(4) - 2b - 4 = 8

-2b = 8 - 16 + 4 = -4

b = 2.

3 0
3 years ago
What is the equation in point-slope form of the line passing through (−2, 0) and (2, 8)? (1 point) y = 2(x + 2) y = 2(x − 2) y =
Sonja [21]

Answer: y=2(x+2)

Step-by-step explanation:

The slope of the line is

y=\frac{8-0}{2-(-2)}=\frac{8}{4}=2

Using the point (-2, 0) to substitute into point-slope form, we get the equation to be \boxed{y=2(x+2)}

8 0
1 year ago
What value is equivalent to 108-8x(5-2)-60
emmasim [6.3K]

Answer:

-28    +    -1    =    -29

     -14    +    -2    =    -16

     -7    +    -4    =    -11

     -4    +    -7    =    -11

     -2    +    -14    =    -16

     -1    +    -28    =    -29

     1    +    28    =    29

     2    +    14    =    16

     4    +    7    =    11

     7    +    4    =    11

     14    +    2    =    16

     28    +    1    =    29

Step-by-step explanation:

6 0
3 years ago
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Can someone help me​
enot [183]

Answer:

EFD

Step-by-step explanation:

Just follow the marks on the triangle.

3 0
2 years ago
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jet set up a study schedule the Plan called for him to study 1/4 hour 5/8 hour and 1 hour on Monday Tuesday and Wednesday in tha
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If he's studying 3/4 hours more everyday, for Friday it will be 1 + 6/8 = 1 and 3/4 hours or 1 hour and 45 minutes.
8 0
3 years ago
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