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3 years ago

Explain two different squares that can be made using the number 9

Mathematics

2 answers:

Tom [10]3 years ago

7 0

9/9=1
9x9=81.
keep in mind that a square root is any number multiplied by itself to get another number

ahrayia [7]3 years ago

4 0

Answer: $1$ and $81$ .

Step-by-step explanation:

Since, we have number $9$ with help of which we have to find a square.

If we divide 9 by 9 then we will obtain 1 which is itself a square.

That is, $\frac{9}{9} = 1$

Now, If we multiply 9 by itself we obtain 81, which is the square of 9.

That is, $9\times 9 = 81$

Note: We can also make other squares by using number 9.

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Evaluate - 1 - ( - z ) where z = -2

mr_godi [17]

-1+z is the answers

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3 years ago

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weqwewe [10]

6h-11-h+4-27h-2
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3 years ago

To construct a regular octagon, what measure would be necessary for each interior angle? Construct an angle of that measure.

svp [43]

Answer:

$135^\circ$

Step-by-step explanation:

Given that, a regular octagon is to be constructed.

To find:

Each angle in the octagon = ?

Solution:

We know that a regular triangle (polygon with 3 sides) has an interior angle of $60^\circ$ .

And a regular quadrilateral (square) has an interior angle of $90^\circ$ .

Therefore, formula for interior angle of a regular polygon with $n$ number of sides can be given as:

$\dfrac{n-2}{n}\times 180^\circ$

For an octagon, we have $n=8$ .

Value of Interior angle in a regular octagon:

$\dfrac{8-2}{8}\times 180^\circ=\dfrac{6}{8}\times 180^\circ=\bold{135^\circ}$

Kindly refer to the attached image for the angle of $135^\circ$

6 0

4 years ago

Solve using substitution. x = –2 5x + 3y = 14

Nookie1986 [14]

Answer: (-2, 8)

Explanation:

Plug x = -2 into the second equation. Isolate y.

5x+3y = 14

5(-2)+3y = 14

-10+3y = 14

3y = 14+10

3y = 24

y = 24/3

y = 8

We have x = -2 lead to y = 8.

Therefore, the ordered pair (x,y) = (-2,8) is the solution to this system.

4 0

2 years ago

Len invests $5200 at 3%/a, while his friend Dave invests $3600 at 5%/a. How long will it take for Dave’s

kupik [55]

Suppose that it will take n years for Dave's investment to be equal to Len's;
thus using the compound interest formula we shall have:
A=p(1+r/100)^n
thus the investment for Len after n year will be:
A=5200(1+3/100)^n
A=5200(1.03)^n

The total amount Dave's amount after n years will be:
A=3600(1+5/100)^n
A=3600(1.05)^n
since after n years the investments will be equal, the value of n will be calculated as follows;
5200(1.03)^n=3600(1.05)^n
5200/3600(1.03)^n=(1.05)^n
13/9(1.03)^n=(1.05)^n
introducing the natural logs we get:
ln(13/9)+n ln1.03=n ln 1.05
ln(13/9)=n ln 1.05-n ln 1.03
ln(13/9)=0.0192n
n=[ln(13/9)]/[0.0192]
n=19.12
thus the amount will be equal after 19 years

4 0

3 years ago