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ss7ja [257]
3 years ago
10

Solve the following system of equations for all three variables. 2x+y+6z=2 // −2x+8y−3z= 4 //−2x+8y−9z= −8

Mathematics
1 answer:
Montano1993 [528]3 years ago
3 0
Can you add a picture ??
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Please help me with this homework
Sergio039 [100]
39) y=20x+175

40) y=20(2)+175, so $215
5 0
2 years ago
A van travels 154 km in 1/3/4 hours (one whole number three over four). Find its speed in km/h
zheka24 [161]

Answer:

88 hrs

Step-by-step explanation:

1/3/4 = 7/4hr ; 7/4 = 1.75hr (the number of hours used to travel for 154km)

154/1.75 = 88 (the number of km van travels per hour)

5 0
3 years ago
4/7m=18-2/7m does anyone know the answer to this with work shown?
Gala2k [10]

Answer: 21

Step-by-step explanation:

4m

​​ =18−

​7

​

​2

​​ m

2 Simplify  

2

7

m

​7

​

​2

​​ m  to  

2

m

7

​7

​

​2m

​​ .

4

m

7

=

1

8

−

2

m

7

​7

​

​4m

​​ =18−

​7

​

​2m

​​

3 Multiply both sides by

7

7.

4

m

=

1

2

6

−

2

m

4m=126−2m

4 Add

2

m

2m to both sides.

4

m

+

2

m

=

1

2

6

4m+2m=126

5 Simplify  

4

m

+

2

m

4m+2m  to  

6

m

6m.

6

m

=

1

2

6

6m=126

6 Divide both sides by

6

6.

m

=

1

2

6

6

m=

​6

​

​126

​​

7 Simplify  

1

2

6

6

​6

​

​126

​​   to  

2

1

21.

m

=

2

1

m=21

6 0
3 years ago
Determine which ordered pair is not a solution of y=-3x+4
nika2105 [10]

i did not mean to do this how do you delete

8 0
3 years ago
PLEASE HELP 80 PTS.<br> Math stuff...
White raven [17]

Answer:

a) m∠6 = 55 and m∠8= 55 - 20 --> m∠8= 35     x = 55

b) m∠7 = 40 and m∠9 = 140                                x = 40

c) m∠8 = 46 and m∠7 = 46                                  x = 18

d) m∠6 = 63 and m∠7 = 27                                  x = 9

(just like the note says at the top each one is a different problem hence the different answer or each angle even if its the same one)

Step-by-step explanation:

I've attached my work

Sorry it took so long

Please give me feedback on my repsomse by commenting,

any way i can improve showing my work?

Hope it helps, let me know if you have questions !

Have a nice rest of your day :)

6 0
2 years ago
Read 2 more answers
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