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olchik [2.2K]
3 years ago
10

Y=4x-9 y=x-3 solve by substitution

Mathematics
2 answers:
Arisa [49]3 years ago
7 0

Answer:

x=2

Step-by-step explanation:

x-3=4x-9

x=4x-6

-3x=-6

x=2

taurus [48]3 years ago
5 0

Answer:

x = 2 y = -1

Step-by-step explanation:

let y = 4x -9 .................. eqn 1

y = x - 3 ........................... eqn 2

substitute for y = x - 3 in eqn 1

we have ,

y = 4x -9.................... eqn 1

i.e

x - 3 = 4x - 9

collect the like terms

-3 + 9 = 4x - x

6 = 3x

divie both sides by 3

x = 2

now put x = 2 in equation (2)

from

y = x - 3 .............eqn 2

y = 2 - 3

y = -1

therefore x = 2 y = -1

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OleMash [197]

Answer:

3 1/2 = 7/2

3 1/8 = 25/8

7/2 x 4 = 28/8

7/2 (3 1/2) < 25/8 (3 1/8)

Therefore, 3 1/8 is greater than 3 1/2

Step-by-step explanation:

8 0
3 years ago
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3 years ago
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A flashlight is projecting a triangle onto a wall, as shown below.
zavuch27 [327]

Answer:

Hence the correct option is 3rd option. 40

Step-by-step explanation:

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6 0
2 years ago
Yan has already finished 3/5 of the 45 math problems he was assigned today. Each math problem took him 1 4/5 of a minute to comp
kobusy [5.1K]

Answer:

He will finish the rest of the problems in 32.4 minutes.

Step-by-step explanation:

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Thus he has completed 27 problems

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So, he completes 18 problems in minutes = 18 *1.8 = 32.4 minutes

Hence , He will finish the rest of the problems in 32.4 minutes.


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3 years ago
If i had 10 pound then i times that by 4 then divide by 2 then take 5 away what is it
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