What is 7d+12-4d-3=? and how do i figure it out ive been stuck for 4 hours on it help?

Answers

Answer 1

Answer: We must simplify the expression. Simplify the like terms. 7d-4d=3d and 12-3=9. Put them together. Our answer is 3d+9.

Answer 2

Answer: Simplify them like terms 7d-4d=3d and 12-3=9 put them together then the answer is 3d+9

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A furniture store owner buys a sofa for $400 and marks it up %90 to sell it. During the stores anniversary sale she sells the sofa for %25 off. How much profit will the store owner make on the sofa during the anniversary sale?

Answers

Answer:

Anniversary sale price= $570

Step-by-step explanation:

Giving the following information:

Purchase cost= $400

Mar-up percentage= 90%

First, we need to calculate the "normal" selling price:

Selling price= 400*1.9= $760

Now, we can determine the anniversary sale price:

Anniversary sale price= 760 - (760*0.25)= $570

What is the length of the third side of the window frame below? (Figure is not drawn to scale.)

Answers

You can solve this using the Pythagorean theorem which states that the square of the length of the hypotenuse is the sum of the square of the lengths of the two legs. In equation form:
c2 = a2 + b2
If the third side is b,
b2 = c2 - a2
b = sqrt(c2 - a2)

Using the given values:
b = sqrt (65^2 - 60^2)
b = 25 in

How many different ways can 12 people line up to go to the same bathroom

Answers

There are 12! ways to line 12 people up. That is 12 factorial (the name for the exclamation point
12! means 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

Using a scientific calculator to compute 12!, we get 479,001,600 ways to line up 12 people. I know it sounds amazing but here is a chart.

People Ways

3 6
4 24 (Notice that if you multiply 6 x 4 you get 24)
5 120 (Notice that if you muliply 24 x 5 you get 120 etc.)
6 720
7 5040
8 40,320
9 362,880
10 3,628,880
11 39,916,800
12 479,001,600

Having troubles with inequalities.. 3.8x + 14.5 < 32

Answers

$3,8x + 14.5 < 32\n 3,8x<32-14,5\n 3,8x<17,5\ /:3,8\n x<(17,5)/(3,8)\n \n 17\frac12 :3\frac45=(35)/(2) :\frac{19}5=\frac{35}2\cdot \frac5{19}\n=(175)/(38)=4(23)/(28)\n x<4(23)/(28)\n x\in (-\infty;4(23)/(28))$

Answer: x < 4.6 rounded to the tenths

Step-by-step explanation:

3.8x + 14.5 < 32

subtract 14.5 on both sides.

3.8x < 17.5

divide by 3.8 on both sides.

x < 4.60526316

Raphael paid $160 for a camera during a 75% off sale. What was the camera's regular price?

Answers

so paid160

75 percent off
100 percent=original
75 percent off=100-75=25%
160=25% of original cost
'of' means multiply
remember tha tpercent is parts out of 100 so
25%=25/100=1/4
160=1/4 times original cost
multiply both sides by 4
640=original cost
answe ris $640 =original cost

Basically, Raphael bought the camera at 25% of the original price.

One simple trick here is that 25% is one third of 75%. So all you need to do is MULTIPLY $160 by 4 to get how much the camera's regular price was.

160 x 4 = 640

The camera's regular price was $640.00

6(7a-10) how do I solve this

Answers

$6(7a-10) \n \n 6 * 7a + 6 * -10 \ / \ distribute \n \n 42a + 6 * -10 \ / \ simplify \n \n 42a + -60 \ / \ simplify \n \n 42a - 60 \ / \ simplify \n \n Answer: \fbox {42a - 60}$

solve the brackets, to do that you should multiply the numbers inside the bracket with the first number outside and in the right to the brackets.so,

6(7a-10)= 42a-60
hence the answer is, 42a-60

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