3 years ago

4. Find the value of each variable. (x and y) * 45°

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

x=13 y=18

Step-by-step explanation:

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-3x + y = 1. written in genreal form how do i so this and what is the answer?!?!?!?!?

AveGali [126]

-3x + y = 1 ............. the general form is y= mx +b .................y = 1 + 3x ........................... Y = 3x + 1

6 0

3 years ago

Determine the value of x and y in the following systems of equations5x-2y=4 ; -2x+y=2.

V125BC [204]

Answer:(x,y)=(8,18)

Step-by-step explanation:

Given

5x-2y=4-------1

Second Equation

-2x+y=2-----2

Now multiply equation 2 by 2 and it to equation 1

5x-4x+0=8

x=8

substitute it in equation 1

$5\times 8-2\times y=4$

36=2y

y=18

Therefore

(x,y)=(8,18)

7 0

3 years ago

Factorize this expression completely <br>using (a-b)² formula<br>3a²- 36a + 108

Novosadov [1.4K]

Answer:

$3a^2 - 36a + 108 = (\sqrt{3}a - 6\sqrt{3} )^2$

Step-by-step explanation:

$3a^2 = (\sqrt{3} a)^2\\108 = 9 \times 4 \times 3= 3^2 \times 2^2 \times 3 = (3\times2 \sqrt{3} )^2 = (6\sqrt{3})^2$

$so, a = \sqrt{3} a \ , \ b = 6\sqrt{3} \\\\(a - b)^2 = a^2 -2ab + b^2\\\\-36a = -2ab\\\\-36a = -2 \times \sqrt{3} a \times 6\sqrt{3}$

Therefore ,

$3a^2 - 36a + 108 = (\sqrt{3}a )^2 - 2(\sqrt{3}a \times 6\sqrt{3} ) + (6\sqrt{3} )^2 = (\sqrt{3}a - 6\sqrt{3} )^2$

6 0

3 years ago

Becky accepted a job as an inventory manager after being offered an $800 signing bonus. If she makes $23 an hour, which equation

dusya [7]

Y = 23x + 800 (Apex)

6 0

3 years ago

the length of a rectangle is 4cm longer than the width. the perimeter is 80cm. find the length and the width.

skelet666 [1.2K]

Answer:

I think it is 20cm

Step-by-step explanation:

divide 80 by 4 =20 cm

7 0

3 years ago