MATHEMATICS MIDDLE SCHOOL

When you have a positive and a negative do you add or subtract
plz answer fast thank you

Answers

Answer 1
Answer:


 (-)(-) = +

 (-)(+) = -

that's the rule...hope that helps:D
Answer 2
Answer: Both. try -20 + 15. -20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5. The answer is -5. Now you try 10 - 15 by yourself.

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How does y=mx+c work

Answers

Ok so, y = mx + c is the equation of a line
When a graph is written in this form, m is the slope/gradient and c is the y - intercept.
This form is needed when a question asks for the equation.
Lets say they give 2 sets of coordinates, we can use the point slope formula to find the slope (m)

point slope formula:
(y₂ - y₁) = m(x₂ - x₁)

Then we substitute any of the two set of coordinates to find c, the y - intercept. 

So the line has a gradient of m and y - intercept of c

A sheet of paper is 8.5 in X 11 inches if you cut 2 in squared from each corner what is the area if the paper

Answers

A=length x height. First we want to know the area of the original sheet of paper. 8.5 x 11= 93.5 inches squared. Then we take two squares with side length 2 inches. The area of each of these squares is 2 x 2, or 4 inches. Since there are two, the total area we take away is 8 inches. We subtract 8 inches from 93.5 since we took it away, and the final area of the paper is 85.5 inches^{2}

Hope this helped!

Answer for a lot of points lololol

Answers

If the two angles are a linear pair, this means that they are supplementary and both add up to 180 degrees. So set up the equation:

3x + 7 + 9x + 17 = 180

--> 3x + 9x + 17 + 7 = 180

--> 12x + 24 = 180

-->12x = 180 - 24 = 156

-->156/12 = 13, so x = 13

Plug in the x value:

3(13) + 7 = 46 degrees

9(13) + 17 = 134 degrees

To check your work, 134 + 46 = 180.

Your answer is A.

3(13) + 7 = 46

9(13) + 17 = 134

Which concludes that your answer is A!

Explain why a rectangular prism composed of two unit cubes has 6 faces how do its dimensions compare to a unit cube

Answers

a rectangular prism dimensions compare to a unit cube because it is the same as the unit cube

heather allen works for the public works department as an electrical inspector. she earns $17.60 per hour for a 36 hour week. Her overtime rate is 1.5 times her regular hourly rate. this week she worked her regular 36 hours plus 8 hours of overtime. what is her total pay?

Answers

First, not accounting for overtime, Heather gets $17.60 * 36, or $633.6 dollars. Now, for overtime, her hourly rate is $17,60 * 1.5, or $26.4/hour, during overtime. Thus, adding the $26.40 * 8 (hours of additional overtime), gives $633.60 + $211.2 dollars, or $844.80 total dollars. 
Her regular pay for a 36 hour week is $633.60. Her overtime rate is $26.40 per hour. If she worked 8 hours overtime, then you would multiply $26.40 by 8 and get $211.20. Add $633.60 and $211.20 to get her total pay, which is $844.80

Answer all of these please!!!!

Answers

For all these problems do 60÷8. For that you would get 7 with a remainder of 4. For number 1 you need to take that remainder and make it into a fraction so it would be
7(1)/(2 )
For number 2 the person wont have enough for all of the bracelets so you take the remainder and X it out. That answer would be
7
For number 3 the person wouldn't have enough to fit all of the beads in each container so she needs one more. Therefore, the answer would be
8
And for the last question she gives 7 stickers to each friend. After that she still has 4 left over stickers and they have to go to her sister. Therefore, the answer would be

4
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