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UNO [17]
3 years ago
10

Need the answer explained

Mathematics
1 answer:
Sever21 [200]3 years ago
4 0

Answer:

it's very simple maybe it's in ur book?

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What is the system is equations 5x+4y=8 2x-3y=17
Tomtit [17]

Answer:

  (4, -3)

Step-by-step explanation:

The system of equations can be described a number of ways. One possible description is "a consistent pair of linear equations in two variables."

Perhaps you want to know the solution to this system of equations. I find it easiest to graph them. The attached graph shows the solution to be ...

  (x, y) = (4, -3)

__

You can also use "elimination" to simplify the system to a single equation in a single variable. Adding 4 times the second equation to 3 times the first will do that.

  3(5x +4y) +4(2x -3y) = 3(8) +4(17)

  23x = 92 . . . . . simplify

  x = 4 . . . . . . . .  divide by 23

Substituting this value into the first equation, we have ...

  5(4) +4y = 8

  5 +y = 2 . . . . . . divide by 4

  y = -3 . . . . . . . . subtract 5

The solution is (x, y) = (4, -3).

5 0
4 years ago
If each wheel has about 94.2 inches of rubber around it, the diameter of each wheel is
LekaFEV [45]
N= pi
2nr=C
C=94.2

94.2/2=nr

47.1=nr

47.1/n=r

15=r

2r = D

2(15)=30
Your answer is 30 inches


3 0
4 years ago
The mean of one set of five numbers is 13, and the mean of a separate set of six numbers is 24. What is the mean of the set of a
Fittoniya [83]

Answer:

((24+13)/28.5

Step-by-step explanation:

5 0
2 years ago
You need to click on the photo. Answer for x and y. Substitution please.
SSSSS [86.1K]
Susjakwledoso sorey ness points
7 0
3 years ago
Twice as number minus 4 is equal to five ​
mojhsa [17]

Answer:

hi

Step-by-step explanation:

i mean like 5+4=9   9 divided by 2= 4.5

4.5 x 2 = 9 - 4 = 5

hope this helps

5 0
3 years ago
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