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3 years ago

What is 8x-4y=-12;-3,-1,1 solve for y

1 answer:

3 0

8x - 4y = -12
4y = 8x + 12
y = 8/4 x + 12/4
y = 2x + 3

When x = -3,
y = 2(-3) + 3 = -6 + 3 = -3
When x = -1,
y = 2(-1) + 3 = -2 + 3 = 1
When x = 1,
y = 2(1) + 3 = 2 + 3 = 5

You might be interested in

How many different seven-letter sequences can be formed from the letters a, a, a, a, a, b, c?

Kaylis [27]

If b is in the first position then c can be in any 1 of the remaining 6 positions.

If we start with ab then the letter c can be in any one of 5 positions and if we have aab there are 4 possible positions for c and so on.

So the total number of possible sequences where b comes first = 6+5+4+3+2+1 = 21.

The same argument applies when c comes before b so that gives us 21 ways also.

So the answer is 2 *21 = 42 different sequences.

A more direct way of doing this is to use factorials:-

answer = 7! / 5! = 7 * 6 = 42.

( We divide by 5! because of the 5 a's.)

4 0

3 years ago

Solve for x. -3 < x - 10

Sever21 [200]

Answer:

7 < x

Step-by-step explanation:

-3 < x - 10

+10 +10

------------------

7 < x

7 0

3 years ago

Write the polynomial 8x − 27 + 2x2y − y2 + 7y in standard form.

Westkost [7]

Your answer is 2x^2y-y^2+8x+7y-27

3 0

4 years ago

Which ordered pair in the form (x,y) is a solution of this equation? 7x-5=1

leva [86]

ANSWER

B. (-2,-3)

EXPLANATION

The given equation is

$7x - 5y = 1$

We want determine which of the ordered pairs is a solution to the given equation.

For point A(-3,-2)

$7( - 3) - 5( - 2) = 1$

$- 21 + 7 = 1$

This statement is false.

For option B(-2,-3)

We have

$7( - 2) - 5( - 3) = 1$

$- 14 + 15 = 1$

For option C(0,4)

We have

$7(0) - 5(4)=1$

$0 - 20=1$

For option D(4,0)

We have

$7(4) - 5(0)=1$

$28 - 0=1$

This statement is false.

8 0

4 years ago

Miss Salina, a boutique owner, received a shipment of stitched suits from a stitching factory. She sold half of them in the firs

SCORPION-xisa [38]

X = original amount

x - 1/2x - 2 = 2/5x
1/2x - 2 = 2/5x
-2 = 2/5x - 1/2x
-2 = 4/10x - 5/10x
-2 = - 1/10x
-2 / (-1/10) = x
-2 * - 10/1 = x
20 = x <=== she was originally shipped 20 suits

3 0

3 years ago