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Lena [83]
3 years ago
5

Solve the system of equations. y = 6x - 27 y = 4x - 17

Mathematics
2 answers:
Otrada [13]3 years ago
7 0
Y=6x-27
y=4x-17
Subtracting the two equations, we get;
0=2x-10
2x=10
x=5
Replacing for x in equation 2;
y=4(5)-17
y=20-17
y=3
NeTakaya3 years ago
5 0
Y=6x-27...........(1)
y=4x-17...........(2)

By comparison
6x-27=4x-17
=> 2x=10 => x=5
Substitute x=5 into (1)
y=6(5)-27=3
Check:
y=4(5)-17=3 as well.
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The percentage, P, of U.S. voters who use punch cards or lever machines in national elections can be modeled by the formula: P =
Ne4ueva [31]

Answer:

From 2004 onwards, fewer than 38.1% of U.S. voters use punch cards or lever machines

Step-by-step explanation:

The percentage of U.S. voters who use punch cards or lever machines in national elections, in x years after 1994, is given by the following equation:

P(x) = -2.5x + 63.1

In which years will fewer than 38.1% of U.S. voters use punch cards or lever machines?

In x years after 1994 onwards.

x is found when P(x) = 38.1.

So

P(x) = -2.5x + 63.1

38.1 = -2.5x + 63.1

2.5x = 25

x = \frac{25}{2.5}

x = 10

From 2004 onwards, fewer than 38.1% of U.S. voters use punch cards or lever machines

7 0
3 years ago
A 22​-ft by 28​-ft rectangular swimming pool is surrounded by a walkway of uniform width. If the total area of the walkway is 33
TEA [102]
I would just use trial and error, it's the easiest way to do it, so find out the area of the pool, then just add that to 336 to get the total area. then add a couple of feet to the dimensions of the pool until you get an answer that matches the total area ( I got 952 for the total area) once you find a number that you can add to 22 and 28 and when you multiply them to get 952 your answer should be the number you added to 22 and 28
I don't know if that helps at all, but thats the only way I can explain it.
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3 0
3 years ago
Simplify the radical expression -4√160<br> A: -4√16<br> B: √10<br> C: -16√10<br> D: -4√80
wel
The answer is:  [C]:  " -16√10 " .
________________________________________________________
Note:
________________________________________________________
  " -4√160"  = -4 * √160 " ; 
________________________________________________________
√160 = √16 *√10 = 4√10 ;

-4 * * 4√10 = -16√10 ;  

which is:  Answer choice:  [C]:  " -16√10 " .
_________________________________________________________
3 0
3 years ago
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AVprozaik [17]

Answer:

2/5+1 is your answer for the slope

7 0
3 years ago
Amelie is shopping for children's books and puzzle books. She wants to purchase at least 2 more children's books than puzzle boo
oksano4ka [1.4K]
X = 9
y = 6

Step by step:

Divide 15 by 2: 15 ÷ 2 = 7.5
Subtract 0.5 from 7.5 (this will later be added back): 7.5 - 0.5 = 7
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Subtract 6 from 15 (6 being the number of puzzle books, 15 being the total number of items): 15 - 6 = 9 (number of children books)
6 0
3 years ago
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