1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OverLord2011 [107]
2 years ago
12

When you subtract a number, you get the same results as when you add the opposite number. Why?

Mathematics
1 answer:
lapo4ka [179]2 years ago
4 0

Answer:

Step-by-step explanation:

Well, the opposite of a number is the same number with the opposite sign. For example, the opposite of -1 is 1.

So, say we have an equation where we're subtracting a number, for example, 2-1, which obviously equals 1. Now, if we add the opposite of 1 to 2, we get the equation 2+(-1) which still equals 1.

I hope this helps!

You might be interested in
Show answer in lowest terms. 3 1 /4 - 1 3/16=
SpyIntel [72]
3 - 1 = 2
1/4 - 3/16 = 4/16 - 3/16 = 1/16

answer is : 2 1/16 (in mixed number) or 33/16 (in improper fraction)
4 0
3 years ago
Please explain (will also give brainliest if you put all the steps)
MrMuchimi

Answer:

A = 139.5 cm^2

Step-by-step explanation:

Ok, let's break it down into pieces. First let's find the area of the main rectangle. We know that the area of a rectangle is as follows:

A = L x W

A = 9 x 12

A = 108 cm^2

Now we need to find the area of the two triangles. There are two ways to approach this. If you can visualize that you can flip the first triangle and slide it against the second, it becomes a rectangle. Then you can simply use the same formula as before with modified numbers.

L = 7 (height of the triangle

W = 4.5 (base of the triangle (half of 9))

A (both triangles) = 7 x 4.5

A (both triangles) = 31.5 cm^2

If you can't quite figure out how to visualize that, you can simply treat them as two independent right triangles. The formula for the area of a right triangle is as follows:

A = (1/2)b x h

b = 4.5

h = 7

A (first triangle) = (1/2)4.5 x 7

A (first triangle) = 15.75 cm^2

The area of the second triangle is identical

A (second triangle) = 15.75 cm^2

The area of the two triangles added together is

A (both triangles) = A (first triangle) + A (second triangle)

A (both triangles) = 31.5 cm^2

As you can see we got the same answer both ways. Now we just have to add the area of the two triangles to the area of the rectangle

A = 108 + 31.5

A = 139.5 cm^2

3 0
2 years ago
Read 2 more answers
Which expression is a factor of 12x2 + 29x – 8?
Contact [7]

Answer:

3x + 8, hope this helps.

4 0
3 years ago
Which is equivalent to 21.76 grams per minute?
Tomtit [17]
1.3056 kg/hour

sorry i took so long
6 0
3 years ago
Please help meeeeeee...
dangina [55]
Parallel means lines that never meet, and perpendicular are lines that meet at right angles.

5 0
2 years ago
Other questions:
  • The number 15, _56 rounded to the nearest thousand is 15,000. What number is the missing digit? Explain.
    15·1 answer
  • The density of aluminum is 2.7 g cm3 what is its density in kilograms per cubic meter
    14·1 answer
  • What is the set solution for |y-9|≤12?
    9·1 answer
  • A survey of students in a school showed 1/2 of the students exercise regularly, 2/5 of the students exercise occasionally and th
    14·1 answer
  • Trig work i don’t understand. pls help
    12·1 answer
  • If f(x) is parallel to the line y= 3/4x + 2/5, which function could be f(x)?
    13·2 answers
  • Seth has just decided to replace his computer. His old computer cost him $1,433 when he bought it exactly seven years ago. Seth
    6·2 answers
  • What is 6x(-496)=19x12
    7·1 answer
  • pls answer this but dont take my points if your not gonna answer it correctly or atleast a smart answer
    11·2 answers
  • Please help<br><br><br> Please, please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!