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serg [7]
3 years ago
13

Solve the system useing elimination 4x+8y=16 6x-8y=4

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

x=2 and y=1

Step-by-step explanation:

Add the two equations to remove "y" and solve for x:

4x+8y=16

6x-8y=4

________

10x=20

x=2

Plug x=2 into one of the original equations to get the value of "y":

4x+8y=16

4(2)+8y=16

8+8y=16

8y=8

y=1

Therefore, x=2 and y=1

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Solve by substitution x-y=-11 y+7=-2x
Bess [88]

x - y = - 11   .............( 1 )

y + 7 = - 2x ...............( 2 )

from equation ( 1 )

x - y = - 11

x   = -11 + y  ...........( 3)      

putting x in equation  ( 2 )

y + 7 = - 2 x  

y  + 7 = -2 ( -11 + y )             y + 7 = 22 - 2 y                       y + 2 y =22 - 7            

3 y = 15                  y = 15 / 3

putting value of y in equation 3

x   = -11+ ( 13 /5 )                       x = -33 /3 + 15 / 3         ( l.c.m)

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4 0
3 years ago
The table shows locations on a map.
Nina [5.8K]

Answer:

The table shows locations on a map.

<u>Place</u>

  1. park
  2. farmers market
  3. post office
  4. bus stop

<u>Location</u>

  1. (-2,2)
  2. (-2,3)
  3. (2, 2)
  4. (6,-3)

Which places on the map are 4 units apart?

O the park and the farmer's market

O the farmers market and the bus stop

<em><u>✓</u></em> <em><u>the post office and the park</u></em>

O the post office and the bus stop

Step-by-step explanation:

Distance :---

→ \sqrt{ {(2 - ( -2 ))}^{2}  + {(2 - 2)}^{2}  } \\   = \sqrt{ {4}^{2} +  {0}^{2}  }  =  \sqrt{ {4}^{2} }  =  \boxed{4 \: units}

5 0
3 years ago
3. Ken mows lawns to earn money on the weekend. He mows 6 lawns evert 4 hours.
Rina8888 [55]

Answer:

m = 1.5h

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He can mow 1.5 lawns in an hour. So to find the amount of lawns mowed u would have to multiply 1.5 and the amount of hours.

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3 years ago
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