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3 years ago

Y= -2+1 3х - 2y = 5 Please tell me how you solved it I’m taking a test

Mathematics

1 answer:

yarga [219]3 years ago

6 0

Answer:

x= 1

Step-by-step explanation:

y= -2 + 1

3x - 2y = 5

substituting method:

substituting y= -2+1 in equ. 3x-2y=5

=> 3x - 2(-2 + 1) = 5

=> 3x +4 -2 = 5

=> 3x + 2 = 5

=> 3x = 5 -2

=> 3x = 3

=> x = 3/3

=> x = 1

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Honors Algebra II & Trig

Keith_Richards [23]

Answer:

The answer to your question is: f(g(1)) = $\sqrt{8}$

Step-by-step explanation:

Data

f(x) = $\sqrt{6- x}$

g(x) = 5x - 7

find: (fog)(1)

f(g(x)) = $\sqrt{6- 5x + 7}$

f(g(x)) = $\sqrt{13 -5x}$

f(g(1)) = $\sqrt{13 - 5(1)}$

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3 0

3 years ago

-3.4 + 11. 25=<br><br> Please help i'm horrible at math

jek_recluse [69]

The correct answer is 7. 85

8 0

3 years ago

Read 2 more answers

What are the solutions to 16x^2-12x=54? Select all the apply.

lesya692 [45]

Answer:

-3/2 or 9/4

Step-by-step explanation:

16x^2 - 12x = 54

Now, we take 54 to the left side. It leads the right side to become "0". As 54 is a positive, it will negative as we change the side.

16x^2 - 12x - 54 = 0

Dividing both the sides by 2, we get,

8x^2 - 6x - 27 = 0

Now, we use factorization method,

8x^2 + 12x - 18x - 27 = 0

or, 4x (2x + 3) - 9 (2x + 3) = 0

or, (2x + 3) (4x - 9) = 0

Now, 2x + 3 = 0; or, 4x - 9 = 0

2x = - 3; or, 4x = 9 (changing the sides)

or, x = - (3÷2); or, x = (9÷4)

Therefore, the solution set for x is either - 3/2 or 9/4

4 0

4 years ago

Х = 2y — 4<br> (3х – бу = -12

horsena [70]

Answer:

Step-by-step explanation:

Substitute the value of x to the 2nd equation

3(2y-4)-6y=-12

6y-12-6y=-12

0=0

7 0

3 years ago

Please help me this is from khan academy :(((

Dmitrij [34]

Answer:

y=1.4x+6.8

Step-by-step explanation:

(-2;4) (-7;-3)

4=-2k+b

-3=-7k+b

7=5k

k=1.4

-2.8+b=4

b=6.8

I already know k and b so I can write an equation.

y=1.4x+6.8

6 0

3 years ago