3 years ago

Solve -3x+y=-7 by slope intercept form

Mathematics

1 answer:

marin [14]3 years ago

8 0

can u add picture?

if u dont add picture i cant solve sorry...

You might be interested in

Joe has a 28 foot long board. He needs to cut it into 24 equal length parts.How many feet should each section of the board be?

Ilya [14]

28 divides by 24 is 1.1666667 which rounds to 1.17 <——answer

6 0

3 years ago

For what value of k are the roots of the quadratic equation kx (x-2)+6=0 equal?

ser-zykov [4K]

Answer:

$\boxed{\sf k=6}$

Step-by-step explanation:

$\sf kx (x-2)+6=0$

Expand brackets.

$\sf kx^2 -2kx+6=0$

This is in quadratic form.

$\sf ax^2 +bx+c=0$

Since this is for equal roots:

$\sf b^2 -4ac=0$

$\sf a=k\\b=-2k\\c=6$

$\sf (-2k)^2 -4(k)(6)=0$

$\sf 4k^2-24k=0$

$\sf 4k(k-6)=0$

$\sf 4k=0\\k=0$

$\sf k-6=0\\k=6$

Plug k as 0 to check.

$\sf \sf 0x^2 -2(0)x+6=0\\6=0$

False.

So that means k must equal 6.

3 0

3 years ago

Pls help ill give branliest

Mekhanik [1.2K]

Square- 1 1/2
Triangle- 2 1/2

8 0

3 years ago

In statistics, the middle value of an ordered set of values is called what?

zaharov [31]

This is called the median.

8 0

3 years ago

Given that 2(-x + 4)=3 prove that x=5/2

user100 [1]

Answer:

x = 5/2

Step-by-step explanation:

So firstly, you want to distribute. It'll make your life much easier.

-2x + 8 = 3

-2x = -5 (subtracting 8 from both sides)

x = 5/2 (dividing both sides by -2 to obtain x)

Hope this helps :)

7 0

3 years ago