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Nina [5.8K]
3 years ago
13

Explain what is meant by "perfect square". Give an example of a number that is a perfect square and an example of a number that

isn't a perfect square.
Mathematics
1 answer:
kykrilka [37]3 years ago
6 0

Answer:

Read the explanation

Step-by-step explanation:

Definintion of Perfect square:

In algebra, a term is a perfect square when the numerical coefficient (the number in front of the variable) is a perfect square number, and the exponents of each of the variables are even numbers. The numbers have to be the same just like how 2 x 2 = 4. 3 x 3 = 9, and so on.

<h3>Perfect square examples are numbers like 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, ..</h3><h3>Non perfect square examples are like 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42 ,43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56 , 57 ,58, 59, 60, ,61, 62, 63, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75 ,76, 78, 79, 80, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101,...</h3>
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The scores on an exam are normally distributed with a mean of 77 and a standard deviation of 10. What percent of the scores are
Shtirlitz [24]

<span>The correct answer between all the choices given is the second choice, which is 16%. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

5 0
3 years ago
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What percent of 150 is 9?
irga5000 [103]
One of the ways to find the answer is to find how much 1 percent of 150 is. To do that we just have to divide 150 by 100:

150 / 100 = 1.5

Now we can divide 9 by 1.5 to know how much percent of 150 it is:

9 / 1.5 = 6

Let's check it:

150 * 6% = 150 * 6/100 = 15 * 6/10 = 3 * 6/2 = 18/2 = 9

It's correct then :)
3 0
3 years ago
What is 1.209 • 10^7 in standard form
dolphi86 [110]
Since the exponents is positive, move the decimal 7 places to the right, thus giving you 12090000
8 0
3 years ago
For Tran Please help is appreciate it
Ostrovityanka [42]

Answer:

A = 38°

Step-by-step explanation:

We are going to use cosine law to find angle A where

a = 4.7

b = 3.9 m

c = 2.9 m

{c}^{2}  =  {a}^{2}  +  {b}^{2}  - 2ab \cos(  \alpha )

or

\cos( \alpha  )  =  \frac{ {a}^{2}  +  {b}^{2} -  {c}^{2}  }{2ab}

cos A = [(4.7)^2 + (3.9)^2 - (2.9)^2]/2(4.7)(3.9)

= 28.89/36.66

= 0.788

A = arccos(0.788) = 38°

6 0
3 years ago
[ please help! ] The graph below shows a line segment PQ.
Tpy6a [65]

Answer:

Slope of the line segment PQ is 1/2.

Step-by-step explanation:

We are given with a line connecting two points P and Q.

The coordinates of P are (4,4) and the coordinates of Q are (-2,1).

Slope of line joining two points (x_{1},y_{1}) and (x_{2},y_{2})

is given by the formula \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Hence the slope of the line PQ is \frac{1-4}{-2-4}=\frac{-3}{-6}= \frac{1}{2}

Therefore correct option is 'C' that is 1/2.

4 0
3 years ago
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