3 years ago

Please HELP!!!!!!!!!!!!!!!!

Mathematics

2 answers:

gavmur [86]3 years ago

6 0

Answer:

sum = (180)(20) = 3600

Step-by-step explanation:

First...

(n-2)180˚ = Sum Of Interior Angles or SOIA

So...

(22-2)180 = SOIA

Then...

20*180 = SOIA

Finally...

3600 = SOIA

dusya [7]3 years ago

5 0

The answer is C. Sum = (180)(20) = 3600

You might be interested in

Convert 3 4/7 into an improper fraction.

Marizza181 [45]

25/7
You multiply 3 and 7 which gives you 21. Add 4 to 21, giving you 25. The improper fraction would be 25/7

7 0

3 years ago

-2(2x+y)=28 in slope intercept form

zvonat [6]

Answer:

y = -2x - 14

Step-by-step explanation:

-2(2x + y) = 28

Distribute the -2:

-2(2x + y) = 28

-4x - 2y = 28

Divide the equation by -2:

-4x - 2y = 28

2x + y = -14

Subtract 2x from both sides:

2x + y = -14

y = -2x - 14

So, the equation in slope intercept form is y = -2x - 14

4 0

3 years ago

2/5•5/8 A-7/40 B-1/4 C-7/13 D-10/13 E-5/4

hammer [34]

Answer:

Step-by-step explanation:

0.4 x 0.625=0.25

7 0

3 years ago

Read 2 more answers

Find the third term of (x^2 + 2)^4.

attashe74 [19]

Answer:

Step-by-step explanation:

$in~the~expansion~of~(x+a)^n\\T_{r+1}=ncr x^{n-r}a^r\\r+1=3\\r=3-1=2\\n=4\\4c2=\frac{4 \times 3}{2 \times 1} =6\\T_{2}=4(x^2)^{4-2}(2)^2\\=16(x^2)^2\\=16x^4$

7 0

3 years ago

Read 2 more answers

A circular fountain has 132 feet of railing around it. What is the area of the fountain rounded to the nearest square foot?

OLEGan [10]

Answer:

139

Step-by-step explanation:

First we need to find diameter 132/3.14=42 rounded

Then we halve it to find radius 42/2=21

Formula for area is radius x radius x 3.14

21 x 21 = 441 x 3.14 = 138.74 round up is 139

8 0

3 years ago