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muminat
3 years ago
5

For all real numbers a and b, 2a • b = a2 + b2 True Or False ! Explain

Mathematics
2 answers:
Aliun [14]3 years ago
7 0
This is true only if one of a or b is negative
(a-b)^2 is 0
a^2+b^2-2ab=0
a^2+b^2=2ab

(A-b)^2 is 0
if a-b=0
cluponka [151]3 years ago
6 0
This may be equal with this formula of 

(a-b)^2 = a^2 -2ab +b^2
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What exactly are you asking for....?
5 0
3 years ago
On the next test, one of the students score 100 but the remaining 4 students score 50 again. What is the average score on this s
Anastasy [175]

Answer:

60

Step-by-step explanation:

50+50+50+50+100= 300

divide by 5 students

300/5 = 60

7 0
2 years ago
Read 2 more answers
How can you understand porportions
BlackZzzverrR [31]

A proportion is a statement that two ratios are equal.  A ratio is a comparison of two different quantities.  "Miles per hour" is a ratio.  "Dollars per pound" is a ratio.  A proportion is that two of these things are equal.

For example, paying $2/pound for apples is the same as paying $6 for 3 pounds:

   \dfrac{\$2}{1 \text{ pound}} = \dfrac{\$6}{3 \text{ pounds}}

That's a portion.

When working with proportions in word problems, you start by setting up one ratio/fraction where you know all the information.  You then set up the second one that's missing a piece of information, but you make sure to set it up using the same structure.

If your first ratio is "miles over hours," then the next ratio has to have the same organization.

If your first ratio is "rise over run," then the next ratio has to have the same organization.

4 0
3 years ago
Provide reasons for the statements.
GarryVolchara [31]

The reasons for the statement about the angles include:

3. Definition of linear pair.

4. Definition of supplementary angles.

5. Substitution.

6. Subtraction property of equality.

7. Definition of congruence.

<h3>How to illustrate the information?</h3>

The angles are supplementary because the angles 1 and 2, 2 and 3 form a linear pair and thus because of the definition of linear pair, they are supplementary angles.

The sum of angles of 1 and 2, 2 and 3 is equal to 180 because these pair of angles are supplementary angles. Supplementary angles are those angles whose sum is 180 degrees.

Learn more about vertical angles on:

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8 0
2 years ago
ALGEBRA<br> 5h+2(11-h)=-5
tangare [24]
5h + 2(11-h) = -5

5h +2*11 +2*(-h) = -5

5h +22 -2h = -5

3h + 22 = -5

3h = -5 -22

3h = -27

------

Therefore:

h=(-9), as 3 *(-9) = -27
7 0
3 years ago
Read 2 more answers
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