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Mars2501 [29]
3 years ago
13

Pleas guys can you answer this to me

Mathematics
1 answer:
Solnce55 [7]3 years ago
8 0

Answer:

what is this boiii?

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Hey i need help with system of equations.<br> i uploaded a doxs file you can onpen it in google docs
Art [367]

Answer:

<h2>PART A: x = 15 and y = -8</h2><h2>PART B: x = -5 and y = 3</h2>

Step-by-step explanation:

PART A:

The first equation is x + y = 7\\y = 7 - x  .............(a)

The second equation is 3x - 2y = 1\\2y = 3x - 1

Putting the value of y from (a) in the above equation, we get 2y = 3x - 1\\2(7 - x) = 3x - 1\\14 - 2x = 3x - 1\\x = 15

From (a) we get y = 7 - x = 7 - 15 = -8

PART B:

Here the system of equations are -x + 4y = 17........(a) and 3x - 5y = -30.........(b)

From (a) we get, x = 4y - 17

Putting the above value of x in (b) we get, 3x - 5y = -30\\3(4y - 17) - 5y = -30\\12y - 51 - 5y = -30\\7y = 21\\y = 3

Hence, x = 4y - 17 = 12 - 17 = -5

3 0
3 years ago
How to plot (7/2,-3/2) ?
fredd [130]

Check the picture below.

6 0
3 years ago
Read 2 more answers
At hoffman's bike rentals,it cost $35 to rent a bike for 7 hours .How many hours of bike does the customer get per dollar?please
inysia [295]

Answer:

your answer is 5 dollars per hour

Step-by-step explanation:

35/7 = 5

4 0
3 years ago
Read 2 more answers
Im so confused pls help !!!!!
Andrei [34K]
600 words
90 words divided 15% is 6 words for 1% so 6 times 100 is 600
hope this helps!
3 0
3 years ago
Hong made $105 for 5 hours of work. At the same rate, how much would he make for 11 hours of work? I need help plz thank you​
cupoosta [38]
105/5 = $21 per hour
21 * 11 = $231 for 11 hours
7 0
3 years ago
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