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3 years ago

What is the answer to 3|3x+4|-7=5?

1 answer:

5 0

Your first step is to add 7 to both sides. So you'd get

3l3x+4l=12

Now that you have this, you want to get rid of that 3 that is being multiplied by l3x+4l. So divide both sides by 3

l3x+4l=4

Now, since this is an absolution value. the 2x+4 could be equal to 12 OR -12. The reason why it could be equal to negative 12 is because when you put a negative number into an absolute value, it automatically makes it positive. So 12 would end up to be 12, and -12 would ALSO end up being 12. So now, you have two equation

3x+4 = 4 AND 3x+4 = -4
3x=0 3x=-8
x=0 AND x=-8/3

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On January 1st, Jerome concocts a rumor and tells Beth. On January 2nd, they each tell a new person. By the end of January 2nd,

Oksana_A [137]

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3 years ago

What is the product of (4x + 3)(-2x - 5)?

Yuki888 [10]

Answer:

A) -8x^2 - 26x - 15

Step-by-step explanation:

(4x + 3)(-2x - 5)

FOIL

first: 4x*-2x = -8x^2

outer : -5*4x = -20x

inner: -2x*3 = -6x

last: -5*3 = -15

Add these together

-8x^2 -20x-6x -15

-8x^2 -26x-15

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3 years ago

8x + 4 = 6x + 6 slove for x

Mazyrski [523]

Answer:

x=1 I think this is the answer

Step-by-step explanation:

$8x - 6x = 6 - 4$

$2x = 2$

$x = 1$

4 0

4 years ago

Read 2 more answers

Examine this system of equations. Which number can be multiplied by each equation so that when the two equations are

andreyandreev [35.5K]

Answer:

15 times the first equation and -12 times the second equation

Step-by-step explanation:

we have

$\frac{3}{4}x+\frac{2}{3}y=6$ ------> first equation

$\frac{5}{8}x+\frac{5}{6}y=12$ ------> second equation

Multiply the first equation by 15 both sides

$(15)\frac{3}{4}x+(15)\frac{2}{3}y=6(15)$

$\frac{45}{4}x+10y=90$ -----> new first equation

Multiply the second equation by -12 both sides

$(-12)\frac{5}{8}x+(-12)\frac{5}{6}y=12(-12)$

$-\frac{60}{8}x-10y=-144$ -----> new second equation

Adds the two new equations

$\frac{45}{4}x+10y=90\\-\frac{60}{8}x-10y=-144\\-----------\\\frac{45}{4}x-\frac{60}{8}x=90-144$

The y-term was eliminated

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3 years ago

A square has an area of 49 square inches. Explain how to find the perimeter of the square.

dexar [7]

It is a square, so you know the sides are equal. You also know that 49 is a squared number. so you do 49 square rooted and you get 7. the perimeter is adding all the side lengths. So you take 7 and multiply it by 4 since a square has 4 sides. and u have your perimeter. 28!<span />

3 0

4 years ago