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sukhopar [10]
3 years ago
10

Is (x + 6) a factor of f(x) = x3 − 3x2 + 2x − 8? Show how to use either the remainder theorem or the factor theorem to explain y

our reasoning.
Mathematics
1 answer:
inysia [295]3 years ago
7 0

Answer:

x + 6 is not a factor of f ( x ) = x³ - 3x² + 2x - 8 because when -6 is substituted into the function, the answer is not 0.

Step-by-step explanation:

→ Substitute x = -6 into f ( x )

( 6 )³ - 3 × ( 6 )² + ( 2 × 6) - 8

→ Simplify

216 - 108 + 12 - 8

→ Simplify further

112

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PLEASE HELP!! 10 POINTS!!WILL MAKE BRAINLIEST
Grace [21]

58):  Solution =====>    Letter Choice,  (C)      1.25m      =       1.50(m      -      2)

Let's solve your equation step-by-step.

1.25m       =      1.5(m     −     2)

Step 1: Simplify both sides of the equation.

1.25m     =        1.5(m    −      2)

1.25m     =      (1.5)(m)       +        (1.5)(−2)                                  (Distribute)

1.25m       =       1.5m          +           −3

1.25m        =       1.5m       −       3

Step 2: Subtract 1.5m from both sides.

1.25m      −       1.5m      =      1.5m     −      3      −       1.5m

−0.25m           =            −3

Step 3: Divide both sides by -0.25.

-0.25m/ -0.25        =          -3/ -0.25

m       =========>    12

Answer    ===========>      m       =        12



59):   Let  your Number be:    D  

Solution:     =====>    7D       =      5D        -      3   =====>  -3/2    =====>    -1.5

Seven Times a number:

7   *     D      or    7(D)

Three Less than Five Times that Number:

5D     -     3

7D       =        5D       -    3

Solve for D:

7D   =    5D     -    3

Subtract   5D   from both sides:

7D   -    5D      =    5D     -     3      -   5D

2D       =           -3

Divide both sides by  2:

2D/2     =       -3/2

D                   =             -3/2

Answer  ==>  D  ====>      -3/2     ========>    Letter Choice, (F)      - 1.5




60):    Letter Choice,   (C),    3x      -     9      =    5x  

Let's solve your equation step-by-step.

3x       −      9       =         5x

Step 1: Subtract 5x from both sides.

3x      −       9       −      5x      =      5x     −      5x

−2x       −     9       =      0

Step 2: Add 9 to both sides.

−2x      −       9        +      9       =       0       +      9

−2x       =       9

Step 3: Divide both sides by -2.

-2x/ -2      =      9/ -2

x        =            -9/2

Answer   ========>         x         =       -9/2       =======>  4.5




61):   Subtract:

500    -      120

=      380

Need to total 500:

380

Find Number of Weeks Divide:

380/20    =      19  Weeks

7   *   19     =    133  

Days it will take Nichole to save  $500.00 =======>   133 Days





62):    Gridded Response:

Solve:

- 2(x     -     1 )       +        5x       =     2(2x        -     1 )  ======>      x     =      4

( -2 )(x)     +     ( -2)( - 1 )    +     5x     =   (2)(2x)      +    (2)( - 1 )

Distribute:

- 2x     +  2     +    5x     =     4x      +        - 2

( - 2x     +    5x )       +        (2)        =       4x     -     2       (Combine  Like terms):

3x    +   2        =    4x       -    2

3x         +      2     =      4x      -   2

Subtract   4x   From both sides:

3x     +    2      -     4x       =       4x     -     2      -    4x     -     x     +   2     =      -2

Subtract  2   from both sides:

-x     +     2    -   2       =         -2       -      2

-x         =       -4

Divide both sides  by     -1:

-x/ -1      =      -4/ -1

x         =     4

Answer   =====>      x      =      4           Check the Graph down below  for Gridded Response on Number 62.      






Hope that helps!!!                                            : )     _P_












6 0
3 years ago
Helps please.<br><br> Answer ASAP
Vesnalui [34]
A=(psr^2)/360

360A=psr^2

s=(360A)/(pr^2)
5 0
3 years ago
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Why should you use the mean and mean absolute deviation (MAD) to compare populations with symmetrical distributions? The mean an
Lesechka [4]

Answer:

The answer is C i think

Step-by-step explanation:Ya it is i took the pre quiz thing

3 0
3 years ago
Read 2 more answers
What is the difference in speed between two cars when one traveled 175 km in 4 hours and the other traveled the same distance in
vovangra [49]
<h3>Given :</h3>
  • Distance = 175
  • Time 1 = 4 hours

\\  \\

<h3>To find:</h3>
  • Different between two speeds when distance is same.

\\  \\

<h3>Solution:</h3>

<u>Part</u><u> </u><u>1</u><u> </u><u>:</u>

In first part we will find speed 1 in which time is 4 hours

we know:-

\bigstar \boxed{ \rm speed =  \frac{distance}{time} }

So:-

\dashrightarrow\sf speed_1 =  \dfrac{distance}{time_1}

\\  \\

\dashrightarrow\sf speed_1 =  \dfrac{175}{4}

\\  \\

\dashrightarrow\bf speed_1 =  43.75 \: km {h}^{ - 1}

<u>Part 2</u>

In first part we will find speed 2 in which time is 3 hours

Again:

\bigstar \boxed{ \rm speed =  \frac{distance}{time} }

\\  \\

\dashrightarrow\sf speed_2 =  \dfrac{distance}{time_2}

\\  \\

\dashrightarrow\sf speed_2 =  \dfrac{175}{3}

\\  \\

\dashrightarrow\bf speed_2 = 58.33kmh^{-1}

\\  \\

<u>Part 3</u>

In this part we will find different between speed 1 and speed 2

\bigstar  \boxed{\rm Difference = speed_2 - speed_1}

\\  \\

So :

\dashrightarrow\sf Difference = speed_2 - speed_1 \\

\\  \\

\dashrightarrow\sf Difference =58.33 - 43.75\\

\\  \\

\dashrightarrow\bf Difference =14.58kmh^{-1}\\

\\  \\

\therefore \underline {\textsf{\textbf{Difference in speed between two cars is \red{14.58km/h}}}}

4 0
3 years ago
Luna observed that in the last 12 issues of "Rise Over Run Weekly," 384 of the 960 pages contained an advertisement.
Andreyy89

Answer:100

Step-by-step explanation:

5 0
4 years ago
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