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rusak2 [61]
3 years ago
8

On a piece of paper, graph y=-3x-2

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0
Hope the answer helps!!!
:)

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Which is a zero of the quadratic function f(x)=9x^2-54x-19?
Arturiano [62]
A zero, or a solution of the quadratic function is c) x = 6 1/3


Write -54x as a difference
9x^2 + 3x - 57x - 19

Factor 3x out
{ 9x^2 + 3x }  - 57x - 19
3x (3x + 1)

Factor -19 out
3x (3x + 1) -19 (3x + 1)

Group the equations
( 3x - 19 ) ( 3x + 1 )

Solve for the zeroes

(3x+1) = 0
     -1     -1
3x = -1
3x / 3 = x
-1 / 3 = -1/3
x = - 1/3

(3x - 19) = 0
      +19   +19
3x = 19
3x / 3 = x
19 / 3 = 6 1/3
x = 6   1/3

8 0
3 years ago
14. a house-painting company charges 376$ plus 12$ an hour. Another painting company charges 280$ plus 15$ an hour.
SpyIntel [72]
376+12x=280+15x
3x=96
x=32
A. 32 hours
B. 376+12*(32)=384+376=720$
6 0
3 years ago
At Jaxlyn’s Garage, 200 cars were inspected and worked on. There were 92 cars that
Ira Lisetskai [31]

Answer:

A) 0.26

B) 0.42

Step-by-step explanation:

No. of cars which needed both:

92 + 136 - (200 - 24)

52

P(both) = 52/200 = 0.26

No. of cars that need an alternator, but not new brakes:

136 - 52

84

P = 84/200 = 0.42

6 0
3 years ago
To divide 1.95 + 0.005, you will need to move the decimal in the divisor and the
juin [17]
I don’t really know what this means
5 0
3 years ago
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I need to find the answer to 3 questions. Which measure of central tendency is most representative of the data 6, 8, 3, 5, 32, 6
Dominik [7]

Step-by-step explanation:

the first one is 2 that appears most while the second is 20 and 3

3 0
3 years ago
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