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Olin [163]
2 years ago
15

(LOOK AT IMAGE)

Mathematics
1 answer:
ddd [48]2 years ago
8 0

Answer: 9

Step-by-step explanation:

The interior angle of the 8-sided polygon is

\frac{180(8-2)}{8}=135^{\circ}

The interior angle of the 10-sided polygon is

\frac{180(10-2)}{10}=144^{\circ}

Taking the difference, we get b=9^{\circ}

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Write 18.4 as a fraction in lowest terms
Lapatulllka [165]

Answer:

Divide each side of 18/4 by 2 to get <u>9/2.</u>

5 0
3 years ago
Read 2 more answers
For his phone service, Ivan pays a monthly fee of $14, and he pays an additional $0.05 per minute of use. The least he has been
Tomtit [17]

Answer:

1215 minutes are the possible numbers he has used his phone in a month.

Step-by-step explanation:

He has a monthly fee of 14$ then to the least that he has been charged we need to substract the monthly fee as follows:

Monthly charged = 74,75-14

Monthly charged= 60,75$

Then he pays an additional 0,05 $/minute of use, to know the consume:

Minutes= \frac{60,75}{0,05}

Minutes= 1215 possible numbers of minutes he has used his phone.

8 0
4 years ago
A painting is 16 in wide and 8 in tall if it is reduced to a height of 2 in then how wide will it be
allochka39001 [22]

Answer: 4 in. wide

Step-by-step explanation: to get from 8 to 2, you divide by 4.

if you divide 16 by 4, the answer is 4

7 0
4 years ago
Read 2 more answers
Which matrix is the product of a 3 × 3 identity matrix and the scalar 3?
Ludmilka [50]

Answer:

\left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

Step-by-step explanation:

In order to find out the resulting matrix, we will have to multiply the identity matric and the scalar 3:

The 3x3 identity matrix is:

\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]

Multiplying with scalar 3:

3\left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]

The scalar will be multiplied by each element of the matrix.

Multiplying zeros with scalar 3 will give us zero. So the resulting matrix will be:

\left[\begin{array}{ccc}3*1&0&0\\0&3*1&0\\0&0&3*1\end{array}\right] = \left[\begin{array}{ccc}3&0&0\\0&3&0\\0&0&3\end{array}\right]

So the resultant matrix will be a scalar matrix with 3 at diagonal positions..

5 0
3 years ago
Read 2 more answers
An artist wants to frame a square painting with an area of 400 square inches. She wants to know the length of the wood trim that
marysya [2.9K]
Area of square painting is 400 square inches.

Let the side of square painting is = a inch

So the area of square painting is = a^2 square inch.

So a^2 = 400&#10;&#10;a =  \sqrt{400}

a = 20 inch

Length of wood trim to need to go around the painting is equal to the perimeter of square painting .

So the perimeter of square painting is = 4 * (side)
                                                                  = 4* 20 = 80 inch.

So the required length of wood trim is = 80 inch.
4 0
3 years ago
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