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Digiron [165]
3 years ago
7

3x + y = -9 y=1 - 3x

Mathematics
1 answer:
GarryVolchara [31]3 years ago
7 0

Answer:

3x + (1 - 3x) =  - 9 \\ since \: y \:  = 1 - 3x \\ 3x + 1 - 3x =  - 9 \\ 0 =  - 9 - 1 \\ 0 = 10

This question doesn't seem right

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It would mean the world to me if some one can answer both questions 1 and 2 please help
scoundrel [369]

Answer:

the answer to both are 1. 3.77 2.19.94

6 0
3 years ago
2x+3y=23<br> 3x-y=7<br> Solve for x
NeTakaya
2x + 3y = 23...........................(1)

3x  - y  =  7   Multiply by 3:-

9x - 3y = 21      Adding this to equation (1):-

11x = 44
x = 

Plug this into equation (1):-
2(4) + 3y = 23

3y = 15
y = 5

Answer is x = 4, y = 5

5 0
4 years ago
Solve and check: 40 = 1.6(d - 2)
alukav5142 [94]

Step-by-step explanation:

40=1.6d-3.2

43,2=1.6d

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5 0
3 years ago
Peanuts are sold at $6 per kg. Cashew nuts are sold at $12 per kg. How many kilograms of cashew nuts are needed to mix with 12 k
n200080 [17]

Answer:

c = 8 kg of cashews

Step-by-step explanation:

hope this helps :)

i thought it was a different type of problem at first, but i realized you're looking for cost per kg. i worked it out keeping the units because i thought that would help make sure that we end up getting our answer in the correct units. feel free to let me know if something's unclear :)

7 0
3 years ago
If ps=6cm and pt=9cm what is pr
vladimir1956 [14]

16+  x^{2}  = 36&#10;
x^{2} =20
x= \sqrt{20}
4^{2} + x^{2} =  6^{2} &#10;

Hope it helps!
#MissionExam001
4 0
3 years ago
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