All categories

1 year ago

If the measures os an exterior angle of a regular polygon is 120 degrees, how many sides does the polygon have?

Mathematics

1 answer:

Elena-2011 [213]1 year ago

8 0

5 bc i took the test and it said it was right so

You might be interested in

Plz..... Solve this questions for me...

faust18 [17]

$6.\\\text{We know}\ 9=3^2.\ \text{Therefore}\\\\9^2=(3^2)^2\\\\\text{use}\ (a^n)^m=a^{nm}\\\\9^2=(3^2)^2=3^{2\cdot2}=3^4\\\\\boxed{3^4=9^2}\\=================$

$7.\\METHOD\ 1:\\\\\sqrt{7^4}=\sqrt{7^{2\cdot2}}\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=\sqrt{(7^2)^2}\\\\\text{use}\ \sqrt{a^2}=a\ \text{for}\ a\geq0\\\\=\boxed{7^2}\\\\METHOD\ 2:\\\\\text{use}\ a^\frac{m}{n}=\sqrt[n]{a^m}\\\\\sqrt{7^4}=7^\frac{4}{2}=\boxed{7^2}\\=================$

$8.\\5^a\times5^b=5^{11}\\\\a)\\\text{use}\ a^n\times a^m=a^{n+m}\\\\5^a\times5^b=5^{a+b}\\\\5^{a+b}=5^{11}\Rightarrow a+b=11\\\\11\ \text{is odd. The sum of even and odd is odd. Therefore}\ a\ \text{and}\ b\ \text{can't be even.}\\--------------------\\\\b)\\5\ \text{solutions}\\\\11=5+6\\11=4+7\\11=3+8\\11=2+9\\11=1+10$

3 0

2 years ago

Chloe’s 5 ft 4 inches tall. There are 2.54 centimeters in 1 inch . What is Chloe’s height in centimeters ?

Lerok [7]

162.56 :) :P :) :P.......

6 0

2 years ago

Read 2 more answers

A washer and dryer cost $841 combined. The washer cost $59 less than the dryer. How much does the dryer cost?

konstantin123 [22]

Answer:

dryer cost = $450

Step-by-step explanation:

Given that:

washer + dryer = $841 ---- eq1

As washer costs $59 less than dryer So,

Dryer - $59 = washer

putting in eq1

Dryer + dryer - $59 = $841

2 dryers = $841 +$59

Dryer = $900/2

Dryer = $450

So the cost of washer will be:

washer = dryer - $59

Washer = $450 - $59

washer = $391

i hope it will help you!

7 0

2 years ago

Read 2 more answers

What binomial must he added to (3r+14) to make the sum of the two polynomials equal (8r-6)

rodikova [14]

Answer:

(5r - 20)

Step-by-step explanation:

(3r + 14) + (Ar + B) = (8r - 6)

B = -6 - 14 = -20

A = 8 - 3 = 5

4 0

2 years ago

Given: ∠AOB is a central angle and ∠ACB is a circumscribed angle.

Novosadov [1.4K]

Answer:

We are given that angle AOB is a central angle of circle O and that angle ACB is a circumscribed angle of circle O. We see that AO ≅ BO because

✔ all radii of the same circle are congruent.

We also know that AC ≅ BC since

✔ tangents to a circle that intersect are congruent.

Using the reflexive property, we see that

✔ side CO is congruent to side CO.

Therefore, we conclude that △ACO is congruent to △BCO by the

✔ SSS congruence theorem.

please mark brainliest.... hope you have a great day ! XD

4 0

2 years ago

Read 2 more answers