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Flauer [41]
2 years ago
14

I need help please provide with the correct answer. it is due at 11:59 pm

Mathematics
1 answer:
expeople1 [14]2 years ago
6 0
I think the answer is d
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Solve the 3x3 system shown below. Enter the values of x, y, and z.
slamgirl [31]

Answer:

x = 1

y = -1

z = 2

Step-by-step explanation:

You have the following system of equations:

x+2y-z=-3\ \ \ \ \ (1)\\\\2x-y+z=5\ \ \ \ \ \ (2)\\\\x-y+z=4\ \ \ \ \ (3)

First, you can subtract euqation (3) to equation (1):

x + 2y - z = -3

<u>-x +y  -z = - 4 </u>

0   3y  -2z = -7    (4)

Next, you can multiply equation (3) by 2 and subtract it to equation (2):

2[ x -y + z = 4]

<u> -2x +y -z = -5</u>

  0 -y + z= 3     (5)

You multiply equation (5) by 2 and sum (5) with (4):

2[ -y  + z = 3]

<u>    3y  -2z= -7</u>

  y  + 0 = -1

Then y = -1

Next, you replace y=-1 in (5) to obtain z:

-(-1) + z = 3

z = 2

Finally, you can replace z and y in the equation (3) to obtain x:

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

x = 1

7 0
3 years ago
If G(x) = 3x + 1, then G -1(1) is<br> 4<br> 1/3<br> 0
Eduardwww [97]

Answer:

0


Step-by-step explanation:

g(x) = 3x + 1 \\\ y = 3x + 1


Changing x to y and y to x:


x = 3y + 1 \\\ 3y = x - 1 \\\ y = \frac{x - 1}{3} \\\ g^{-1}(x) = \frac{x - 1}{3} \\\ g^{- 1} (1) = \frac{1 - 1}{3} \\\ g^{- 1} (1) = 0


I hope I helped you.

4 0
2 years ago
Tammy is playing a game where she is trying to roll a three with a standard
patriot [66]

Answer:

3/4 is the probablity

Step-by-step explanation:

7 0
3 years ago
Mark and his three Friends ate out at Applebees's . Their bill totaled % 52.35 . If they left a 20% tip how much would each pers
malfutka [58]

Answer:

Each person would pay $15.71

Step-by-step explanation:

First we can calculate how much everyone ate by multiplying the bill amount by 120% (20% tip and 100% of the bill).

$52.35 * 120% = $62.82

Now to find out how much each pays, we have to divide that cost by the number of people (4).

$62.82/4 = $15.71

7 0
3 years ago
3. In a triangle, two angles have measures of 45°
Colt1911 [192]

Answer:

Triangles always have 180°, split in some manner between the three angles. With two of the three angles given, you can set up a relatively simple equation, where the third angle is assigned to the variable x:

45°+85°+x=180°

130°+x=180°

x=50°

5 0
3 years ago
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