-3+4(2X-5)=2(3X-1)+2X

Answers

Answer 1

Answer: $-3+4(2x-5)=2(3x-1)+2x\n-3+8x-20=6x-2+2x\n8x-6x-2x=-2+3+20\n0=21\nx\in\emptyset$

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Walmart sell toothbrushes for 3.50 a pack but only pays 1.15 for them.What is the markup rate based on selling price?(answer Quickly please)

Answers

Answer:

2.45

Step-by-step explanation:

3.50

3-1= 2

50-15= 45

3.50 -1.15= 2.45

Graph y=−4/7x+1 . Please help.

Answers

Answer:

The required graph is shown below.

Step-by-step explanation:

Consider the provided function.

$y=-(4)/(7)x+1$

The above function is a linear function.

We can draw the graph of the function with the help of 2 points.

Substitute x = 0 in the above function.

$y=-(4)/(7)(0)+1$

$y=1$

Substitute y = 0 in the above function.

$0=-(4)/(7)x+1$

$(4)/(7)x=1$

$x=(7)/(4)$

Now plot the points.

Draw a straight line passing through (0,1) and (7/4,0)

The required graph is shown below.

Go to a website called desmos graphing calculator and it will help you out but I put a image of the graphed equation as well.

A medical office is replacing their existing flooring with carpeting in the waiting and office areas and laminate flooring in the patient exam rooms. If each of the 10 exam rooms is 10 feet by 10 feet, the waiting area is 20 feet by 15 feet, and the office area is 25 by 20 feet, how many total square feet of flooring will they be replacing?

Answers

So first, you would multiply 10 times 10 to get 100 square feet. And since there are 10 exam rooms, you multiply 100 to 10 and you would get 1000. Then to calculate the waiting area, you multiply 20 times 15 to get 300 square feet. Then the office area would be 25 times 20 which is 500. So you would add up 1000+300+500. The answer comes out as 1800 square feet. Hope this helped! Good luck!

What value of x makes the equation square root of x-5=4 true?

Answers

$x-5=4 \n \nx=4+5\n \nx=9$

x-5=4
x=9

Therefore it is 9

Find the width of a rectangle with a perimeter of 90 and a length of 15.A.90
B.15
C.45
D.30
I really need help.

Answers

A rectangle has 2 sets of equal parallel lines. And we know one of the sides is 15.
So we know two of the sides have to be 15. Right?

So that means 15 x 2 = 30

So we know that two of the sides add up to equal 30.

The entire perimeter is 90. Well we've used 30 so lets see how much we have left to use.

90(the entire perimeter) - 30(the amount we know) = 60(what we have left)

So the last two sides of the rectangle equal 60, since there are two sides, let's divide the remaining perimeter by 2

60(both of the sides) / 2(the last 2 sides that we haven't found the length for yet) = 30

So now we know all of the sides.

Let's read the question again now.

"Find the 'WIDTH' of a rectangle with a perimeter of 90 and a 'LENGTH' of 15"

So it's 15 long(length), and 30 wide(width)

If this doesn't help, I can draw a picture and it mights make some more sense :)

Final answer:

The width of the rectangle is 30 units.

Explanation:

To find the width of a rectangle, we need to use the formula for the perimeter of a rectangle, which is 2(length + width). In this case, we are given the perimeter as 90 and the length as 15. Plugging these values into the formula, we get: 90 = 2(15 + width).

Now we can solve for the width. First, simplify the equation: 90 = 30 + 2(width).

Then, subtract 30 from both sides: 60 = 2(width). Divide both sides by 2 to isolate the width: width = 30.

Therefore, the width of the rectangle is 30 units.