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Crank
3 years ago
14

If f(x)=-3x-7 and g(x)=x^2

Mathematics
2 answers:
ahrayia [7]3 years ago
8 0

Answi do not understand your question

Step-by-step explanation:

xz_007 [3.2K]3 years ago
8 0

Answer:

I don't see the question

Step-by-step explanation:

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How to solve the system of equations algebraically for all values of x, y, and z
stich3 [128]
4x -3y + z = -10...............(1)
2x +y + 3z =  0...............(2)
-x +2y - 5z = 17...............(3)

First we multiply 3*(2) and add it to (1) 
6x +3y +9z =0..................+(1)..................> 10x + 10z = -10......(4)

Then we multiply -2*(2) and add it to (3) 
-4x -2y -6z =0 ...................+(3)................> -5x -11z = 17...........(5)

Multiply  2*(5) and add it to (4)
-10x -22z = 34...................+(4).................> -12 z = 24 ..............>>> z = -2

Substitute z in (4)............> 10x +10(-2) = -10.............................>>> x = 1

Substitute x and z in (2).....> 2(1) +y + 3(-2) =  0..................>>> y = 4

Solution (x,y,z) = (1,4,-2)

4 0
3 years ago
HELP ASAP ITS OVERDUE :((
drek231 [11]
A)linear because it is increasing by same amount each month
b) it's around 110 percent
6 0
4 years ago
What does Y=???? Plz help me been stuck on this
garri49 [273]

9514 1404 393

Answer:

  y = 8

Step-by-step explanation:

It can be useful to write down the values of corresponding parts of the figures. This can help you see the ratio between corresponding measures. Here, we're concerned with sides.

  AB = ?, FE= 6

  BC = 10, EC = 5 . . . . . a ratio of 2:1

  CD = ?, CG = ?

  DA = y, GF = 4

So, the proportionality of the sides in these similar figures means ...

  y/4 = 10/5

  y = 4×10/5

  y = 8 . . . . multiply by 4

3 0
3 years ago
I need help with an area math question
Ede4ka [16]

Answer:

Step-by-step explanation:

Area of outer triangle = \dfrac{4x*(4x+3)}{2}= 2x*(4x +3)

                                    = 2x*4x + 2x*3

                                   = 8x² + 6x

Area of inner triangle= \dfrac{2x*(2x+5)}{2}=x*(2x+5)=x*2x+x*5=2x^{2} + 5x

Area of aluminium = area of outer triangle - area of inner triangle

                        = 8x² + 6x + 2x² + 5x

                        = 10x² + 11x

Area of 20 aluminum borders = 20*(10x² + 11x)  = 200x² + 220x

b) x = 25 cm

Area of 20 aluminum borders = 200*25² + 220*25

                                                  = 200 * 625 + 220*25

                                                 = 125000  + 5500

                                                  = 130500 cm²

c) Area of inner triangle (Glass) = 5500 cm²

Cost of aluminium = 130500 * 0.06 = $ 7830

Cost of glass = 5500 * 0.03 = $ 165

Cost of making 20 windows =  7830 + 165 = $ 7995

7 0
3 years ago
Fractions on a number line.
larisa [96]
1/5  3/5  7/10  4/5  Change the denominators all to 10 to  be able to but them in order
8 0
3 years ago
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