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3 years ago

2x+4y=16 X+4y= -4 What is the answer

Mathematics

1 answer:

olganol [36]3 years ago

4 0

Answer:

$x=20\\y=-6\\\\(20,-6)$

Bam.

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Solve the equation. |k + 7| = 3 A. {–4, 10} B. {–10, –4} C. {–4, 4} D. {all real numbers greater than or equal to –10 and less t

Leto [7]

The absolute value sign makes it so that k+7 could be either -3 or +3 and the result would still be 3. This means there are two possible answers for k. The one that makes k+7=-3 and the one that makes k+7=+3. Just solve these two equations:
k+7=-3
k=-3-7
k=-10

k+7=3
k=3-7
k=-4

So the possible answers are -4 and -10. B is the correct choice.

6 0

4 years ago

What statement Correctly describes his solution?

Roman55 [17]

Answer:

(1) option is correct .

Step-by-step explanation:

$2x^2-7x-15$

$=(2x+3)(x-5)$

$=2x^2-10x+3x-15$

which is the equation in the question.

5 0

3 years ago

Find the y-value given the x-value: y = x^2; x = -9<br> y = x?; x = -9

Delvig [45]

Answer:

For the y= x^2 x = -9 y = 81

Step-by-step explanation:

x^2

x=-9

-9^2

-9 * -9

5 0

3 years ago

Show your work please

Butoxors [25]

Answer: No solution

Step-by-step explanation:

Perimeter= 2(length) + 2(width)

If they have the same perimeter than we can write their values as an equation like this:

2(10) + 2x = 2(6) + 2(x + 3)

20 + 2x = 12 + 2(x+3)

DISTRIBUTE THE 2 TO THE X AND THE 3

20 + 2x = 12 + 2x + 6

COMBINE LIKE TERMS

20 + 2x = 18 + 2x

SUBTRACT 2X FROM BOTH SIDES

20 = 18

<u>THE EQUATION HAS NO SOLUTION, AND YOU ARE CORRECT</u>

6 0

3 years ago

Which ordered pairs is a solution to 5x+3y>12 Question 2 options: (3, 9) (-5, 5) (3, -6) (-2, -5) (2, 8) (-6, 0)

jek_recluse [69]

The solution to the expression given as 5x + 3y > 12 has the ordered pair of (3, 0)

<h3>How to determine the ordered pair of the solution?</h3>

From the question, we have the following inequality that can be used in our computation:

5x + 3y > 12

Solving further, we need to collect the like terms

So, the expression becomes

3y > 12 - 5x

Next, we divide through the inequality by 3

So, we have the following representation

y > 12/3 - 5/3x

Evaluate

The equation becomes

y > 4 - 5/3x

At this point, we assume any value for x and then solve for y

Assume that the value of x is 3

So, we have the following representation

y > 4 - 5/3 * 3

Evaluate the products

y > -1

A value greater than -1 is 0

So, we have

x = 3 and y = 0

Express as ordered pairs

(x, y) = (3, 0)

Hence, the ordered pair of the solution is (3, 0)