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PSYCHO15rus [73]
2 years ago
12

-7X + 9 In the expresion show, which of the following is the variable

Mathematics
2 answers:
Gnesinka [82]2 years ago
7 0

Answer:

x

Step-by-step explanation:

the variable is always a letter and in this case it's x, but you''ll see others like a, b, c, anything really.

Nataliya [291]2 years ago
5 0

Answer:

x

Step-by-step explanation:

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all the inhabitants of bakasi on the nigerian and cameroon border speak either english or french or both if 64% speak french and
Bas_tet [7]

Answer:

85% of them speak English

8 0
2 years ago
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Find the sum and product of the roots of each equation of <img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D" id="TexFormula1" title
vlada-n [284]

Answer:  Sum (b) = -4

               Product (c) = 4

<u>Step-by-step explanation:</u>

In the quadratic equation ax² + bx + c

  • b represents the sum of the roots
  • c represents the product of the roots

 2x² - 8x + 8 = 0

2(x² - 4x + 4 = 0)

       ↓        ↓

     b= -4   c= 4

5 0
2 years ago
Donna de paul is raising money for the homeless. She discovers that each church group requires 2 hours of let her writing and 1
Salsk061 [2.6K]

Answer:

x  =  7

y  =  3

z (max)  =  4950/3  =  1650

Step-by-step explanation:

Let call  

x numbers of church goup and

y numbers of Union Local

Then  

First contraint

2*x + 2*y ≤ 20

Second one

1*x + 3*y ≤ 16

Objective Function

z = 150*x + 200*y

Then the system is

z = 150*x + 200*y To maximize

Subject to:

2*x + 2*y ≤ 20

1*x + 3*y ≤ 16

x ≥ 0 y ≥ 0

We will solve by using the Simplex method

z - 150 *x - 200*y = 0

2*x + 2*y + s₁ = 20  

1*x + 3*y + 0s₁ + s₂ = 16

First Table

z           x          y          s₁           s₂          Cte

1        -150    -200       0            0     =      0

0          2         2           1            0     =    20

0          1          3          0            1      =     16

First iteration:

Column pivot   ( y column ) row pivot (third row) pivot 3

Second table

z           x                y          s₁           s₂                Cte

1       -250/3           0          0         200/3    =    3200/3

0      - 4/3               0          -1           2/3       =    -20/3

0         1/3               1            0           1/3       =    -20/3

Second iteration:

Column pivot  ( x column ) row pivot  (second row)  pivot  -4/3

Third table

z           x                y          s₁           s₂                Cte

1            0               0      750/12    700/6    =   4950/3

0            1                0        3/4          -1/2     =    7

0            0                1         -1/4          1/2     =  9/3

5 0
3 years ago
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PIT_PIT [208]

Answer:

Step-by-step explanation:

7 0
2 years ago
What is the value of the geometric sequence for which a1=10 and r=0.5?
tiny-mole [99]
The formula for an infinite geometric sequence is the following:

S_{∞}= \frac{a_{1}}{1-r}

Just substitute the values of a_{1} and r into the formula.

S_{∞}=\frac{10}{1-0.5}
S_{∞}=\frac{10}{0.5}
S_{∞}= 20

Therefore, the answer is 20.
3 0
3 years ago
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