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Serga [27]
3 years ago
15

Solve the following system of equations: 2x+3y-z=1 3x+y+2z=12 x+2y-3z=-5

Mathematics
2 answers:
siniylev [52]3 years ago
6 0
X=-3 y=19/7 z=7 i’m not sure but i think
love history [14]3 years ago
4 0

Answer:

x=-3 y=19/7 z=7

Step-by-step explanation:

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Can anyone please tell me what I’m doing wrong. It’s not giving me the full marks. The marks for this question is 4 but I only g
Gekata [30.6K]

Answer:

33%

Step-by-step explanation:

The area of the entire circle:

The radius is 4+3+3 = 10

Area of a circle= pi * r^2


Area of largest circle      = pi * 10^2 = 100 pi


Area of blue ring = Area of blue circle - area of inner white circle

The blue circle has a radius of (4+3) = 7

The inner white circle had a radius of 4

Substituting what we know

Area of blue ring = Area of blue circle - area of inner white circle

                               = pi * r^2 - pi*r^2

                               = pi * 7^2 - pi *4^2

                                = 49pi - 16pi

                                = 33 pi


The percentage of the logo that is blue is the blue ring/ area of largest circle

percentage = 33 pi/100 pi

Canceling pi

percentage = 33/100

                    = 33 %

8 0
3 years ago
The average amount is three test is an 84 what must he get on a fourth test to raise his average to a 87
garri49 [273]

Answer:

90

Step-by-step explanation:

84+90=174

174/2=87

4 0
3 years ago
The Positive Z-Equal Line, the Negative Z-Equal Line, and the Regression Line all pass through the same point. What are the stan
Evgen [1.6K]

Answer:

The standard coordinates of the point are ; ( 0,0 )

Step-by-step explanation:

The standard coordinates of the point are ; ( 0,0 ) also the standard values of the means will also be ( 0, 0 )

This is because for the Positive Z-equal line, Negative Z-Equal line and Regression line to all pass through the same point indicates dependent and independent variables of the Z-score and regression lines respectively

4 0
3 years ago
True or False: When we convert a decimal to a percent we are multiplying the decimal by 100.
mariarad [96]
The answer is true :)
3 0
3 years ago
Hepppppppp !!!
Radda [10]

Answer:

Step-by-step explanation:

c

5 0
3 years ago
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