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3 years ago

Which numbers are solutions of the equation?|5 – 4x| – 3 = 4

1 answer:

3 0

$|5-4x|-3=4\ \ \ /+3\\\\|5-4x|=7\iff5-4x=7\ \vee\ 5-4x=-7\\\\-4x=7-5\ \vee\ -4x=-7-5\\\\-4x=2\ /:(-4)\ \vee\ -4x=-12\ /:(-4)\\\\x=-\frac{2}{4}\ \vee\ x=\frac{-12}{-4}\\\\x=\frac{1}{2}\ \vee\ x=3$

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an appliance store sells a washer dryer combination for $1500 if the washer costs $200 more than the dryer find the cost of each

adelina 88 [10]

Make an equation

X+X+200=1500

Isolate the variable

2x=1300

X=650

Know that we know what X is, we know that X + 200 will equal the cost of the second appliance

650+850=1500

0 0

3 years ago

Peter works part time for 3 hours every day and Cindy works part time for 2 hours every day.

Darina [25.2K]

Answer:

A) 13.50>9.00

B) $7

Step-by-step explanation:

A) 4.50*3=13.50 (Peter) 4.50*2=9.00 (Cindy)

B) Cindy would have to earn $7 an hour if she works 2 hours per day because 7*2=14

3 0

3 years ago

Read 2 more answers

6. A trader sold 100 boxes of fruit at

Maurinko [17]

Answer:

GH¢ 5.80 per box (average)

Step-by-step explanation:

In order to find the average selling price per box we first need to sum up all of the boxes to get the total number of boxes. Then we need to sum up the amount of money that he made by multiplying the cost per box by the amount sold at each price and adding those values together. Finally, we need to divide the total money made by the total number of boxes sold to get the average selling price per box.

100 boxes + 800 boxes + 600 boxes = 1,500 total boxes

(100 * 8) + (800 * 6) + (600 * 4) = total money made

800 + 4800 + 2400 = GH¢ 8,700 total money made

GH¢ 8,700 / 1,500 = GH¢ 5.80 per box (average)

7 0

3 years ago

Please help!!!!!!!!!!!

Assoli18 [71]

Let's take this problem step by step:

To find the ordered pair of the system:

⇒ must set both equations equal to each other

⇒ and solve for 'x'

Let's solve:

$x^2-2x+3=-2x+19\\x^2-2x+2x+3-19=0\\x^2-16=0\\(x+4)(x-4)=0$

Let's find the x-values:

$(x-4)=0\\x=4\\\\(x+4)=0\\x=-4$

Let's find f(x)'s value for each 'x':

$x=4\\f(4)=-2(4)+19=-8+19=11\\\\x=-4\\f(-4)=-2(-4)+19=8+19=27$

Answer: (4, 11), (-4,27)

Hope that helps!

#LearnwithBrainly

3 0

1 year ago

Im stumped and timed.

VLD [36.1K]

I believe the answer for the second one is B ( I took this last year but I think it’s that one)

5 0

3 years ago