MATHEMATICS MIDDLE SCHOOL

You bought a sandwich for 12.40 it includes the tax 5% what is the cost of the sandwich before tax?

Answers

Answer 1
Answer:

Answer: $11.81✔️cost of the sandwich before tax

Step-by-step explanation:

Let C = cost before tax

Cell phone costs = C + C·5% = $12.40

C(1 + 0.05) = $12.40

C = $12.40/1.05 = $11.81 , cost before tax

Answer: $11.81✔️ cost of the sandwich before tax

Checking

Cell phone after tax = $11.81 + $11.81·5/100

Cell phone after tax = $11.81 + $0.59 = $12.40✔️checked!

Spymore  

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42 is 87.5% of what number

Answers

Answer:48

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

42 = 87.5% x Y

42 =   87.5 x Y

          100

Multiplying both sides by 100 and dividing both sides of the equation by 87.5 we will arrive at:

Y = 3 x

100

87.5

Y= 48

Find the other endpoint of the line segment with the given endpoint and midpoint. Endpoint: (-2, -6) Midpoint: (-5, 1)

Answers

Answer:

(-8,8)

Step-by-step explanation:

The midpoint M(x_M,y_M) of the segment AB with endpoints A(x_A,y_A) and B(x_B,y_B) has coordinates

x_M=(x_A+x_B)/(2)\n \ny_M=(y_A+y_B)/(2)

In your case, A(-2,-6), \ M(-5,1), then

-5=(-2+x_B)/(2)\Rightarrow -2+x_B=-10,\ x_B=-10+2=-8\n \n1=(-6+y_B)/(2)\Rightarrow -6+y_B=2,\ y_B=2+6=8

Can you solve this using systems of equations for the parallelogram?

Answers

Answer:

no we can't

Step-by-step explanation:

because in the parallelogram the sides should be equal to each other.

ı mean the sides whıch face each other has to be same.

I don't get adding integers with different signs!!
5+(-2)=?

Answers

think of it as subtracting your adding a negative number to a positive, if the positive number is larger when adding, then your answer should end up positive if the negative number is larger your answer should be negative, in this case you could think of this problem as 5-2 instead of adding the 5 to the negative 2. so in this case your answer would be 3. if you don't get it try using a number line, those are very helpful when starting off!
Well,

5 + (-2)

"Five plus the quantity negative two."

Adding a negative quantity is the same as subtracting the positive quantity.

For example: 0 + (-1) = 0 - 1 = -1

Another situation: 0 - (+1)

You have to realize that any number (say 5, for example) without a sign in front of it is automatically positive.

Technically, if we "show signs," we will get +0 - (+1)

We can really just omit ("hide signs") the positive signs.
0 - 1 = -1

Yet another situation: 0 - (-1)

Subtracting a negative can be re-worded as "subtracting from the negative."  It sounds like it is taking away from the negative, bringing the integer closer to zero.  Subtracting a negative is the same as adding a positive.
0 - (-1) = 0 + (+1) or 0 + 1 = 1

In your case: 5 + (-2):
5 + (-2) = 5 - 2 or 3 or +3

The rectangles are similar.What scale factor was applied to the first rectangle to get the resulting image?

Enter your answer as a decimal in the box.

The image is a rectangle that says 6 then a smaller rectangle that says 1.5

Answers

the answer is .25 hope that helps

Answer:

The answer is 0.25! :)

Step-by-step explanation:

To find the scale factor, you have to do division of the shorter sides of the first and second rectangle. 1.5/6 which equals 0.25.

Hope this helps! <3

a rectangle has a perimeter of 250 cm and a side length of L.write an equation for the area of the rectangle in terms of L. what is the greatest are possible, what are the dimensions. show all work

Answers

P=2W+2L
P=125+125
P=250
A=WL
A=62.5*62.5
A=3906.25

P=2W+2L
P=100+150
P=250
A=WL
A=50*75
A=3750
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