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juin [17]
3 years ago
7

Find the quadratic equations whose roots are 3 and -4​

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

Step-by-step explanation:

\displyastyle \Large \boldsymbol{} (x-x_1)(x-x_2)  \ \  x_1 \ ; \ x_2 -roots \\\\(x-3)(x-(-4))=(x-3)(x+4)=\boxed{x^2+x-12}

Alisiya [41]3 years ago
4 0

Answer:

Hello,

Step-by-step explanation:

(x-3)*(x+4)=0 or <u>x²+x-12=0</u>

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An anthropology article presents a hypothetical situation that could be described by a linear programming model. Suppose a popul
solong [7]

Answer:

The minimum  labor = 270 hours and it is obtained when 0 units of plants and 18 animals are collected.

Step-by-step explanation:

We assume that x should represent the number of units of plants

Also y to represent the number of animals.

So, minimze (z) = 30 x + 15 y

Subject to:

30 x + 20 y ≥  360  

10  x + 25 y ≥ 300

               y  ≤ 8

 0  ≤  x  ≤ 25

 0  ≤  y  ≤ 25

Changing the above linear inequalities into linear equation; we have:

30 x + 20 y =  360  

10  x + 25 y = 300

               y  = 8

The graph for the above discussion can be located in the attached diagrammatic expression below:

NOW, the corner points (0,18),(0,25),(25,25), and (25,8) can be calculated from the graph. From the diagram, the corner point  [\frac{60}{11} , \frac{108}{11} ] can be found by solving the system.

30 x + 20 y =  360  

10  x + 25 y = 300

Corner point (10, 8) = 10 x + 25 y = 300

                                                   y  = 8

Corner point                               Value of z = 30 x + 15 y

(0,18)                                            270

(0,25)                                           375

(25,25)                                         1125

(25,8)                                            870

[\frac{60}{11} , \frac{108}{11} ]                                          \frac{3420}{11} ≅ 310.91

(10, 8)                                            420

∴

The minimum  labor = 270 hours and it is obtained when 0 units of plants and 18 animals are collected.

8 0
3 years ago
Find the solutions to 2x^2-7x+3=0
GarryVolchara [31]

Answer:

X=½ or 3

Step-by-step explanation:

0=2x²-7x+3

0=(2x-1)(x-3)

0=2x-1 or 0=x-3

1=2x or 3=x

½=x

4 0
3 years ago
Angle W and angle X are congruent. If their sum is 121 degrees, what is the measure of angle X?
Taya2010 [7]
The measure of angle x is 60.5. Congruent means they’re the same so you would divide 121 by 2 and get 60.5.
4 0
3 years ago
Write a linear function f with the given values. f(0) = -2,f(4) = -3
Thepotemich [5.8K]

Answer:

<em>f(x) = </em>-\frac{1}{4}<em> x - 2 </em>

Step-by-step explanation:

Slope of the line: m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

y - y_{1} = m( x - x_{1} )

f(x) = mx + b (b - is y-intercept)

(0, - 2) Coordinates of y-intercept

(4, - 3)

m = \frac{-3+2}{4-0} = -\frac{1}{4}

<em>f(x) = </em>-\frac{1}{4}<em> x - 2</em>

7 0
3 years ago
If each person gets 1/2 gallons of water,then how many people can share 64 gallons of water?
Anastaziya [24]

Answer:

128 people can share

Step-by-step explanation:

hope this helps! have a great rest of ur day :)

7 0
3 years ago
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