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Akimi4 [234]
4 years ago
13

HELP!!

Mathematics
1 answer:
kobusy [5.1K]4 years ago
5 0
<span>f(x)=x^2+2x−24
x intercept is where y=0 let f(x)=y
</span><span>x^2+2x−24=0
(x+6)(x-4)  ,x=-6, x=4

2)

</span><span>f(x)=x^2+17x+72 
</span>x^2+17x+72 =0
<span>
(x+8)(x+9) x= - 8,- 9

3)
</span>f(x)=x^2+6x+11<span>
x=-3 minimum</span>
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3 years ago
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Solve the system.
Alex777 [14]

Answer:

{x,y,z} = {-18,4,2}

Step-by-step explanation:

Solve equation [2] for the variable  x  

x = -10y + 2z + 18

Plug this in for variable  x  in equation [1]

(-10y+2z+18) + 9y + z = 20

- y + 3z = 2

Plug this in for variable  x  in equation [3]

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Solve equation [1] for the variable  y  

 y = 3z - 2

Plug this in for variable  y  in equation [3]

  - 3•(3z-2) + 8z = 4

   - z = -2

Solve equation [3] for the variable  z  

 z = 2

By now we know this much :

 x = -10y+2z+18

   y = 3z-2

   z = 2

Use the  z  value to solve for  y  

 y = 3(2)-2 = 4

Use the  y  and  z  values to solve for  x  

 x = -10(4)+2(2)+18 = -18

6 0
3 years ago
The equation of a line is y=-2x+1. What is the equation of a line that is parallel to the first line and passes through (2,2)
Alex
The answer is y=-2x+6

We know the slope of the given equation is -2. A parallel line must have the same slope as the original function. So if we plug in the coordinates and the slope into the point slope formula we get y=-2x +6

7 0
3 years ago
If angle A in the diagram equals 45 degrees and angle B is 4x + 5 degrees, determine the value of x.
Novosadov [1.4K]
With the information given it should be 10.

4x+ 5= 45
-5. -5
4x=40
x=10
3 0
4 years ago
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