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3 years ago

What is the correct name of the polygon below

Mathematics

2 answers:

Zigmanuir [339]3 years ago

7 0

Since it has 8 sides, it is an octagon.
This table will help
triangle (or trigon)--3
quadrilateral (or tetragon)--4
pentagon--5
hexagon--6
heptagon--7
octagon--8
nonagon (or enneagon)--9
decagon--10
hendecagon (or undecagon)--11
dodecagon (or duodecagon)--12
tridecagon (or triskaidecagon)--13
tetradecagon (or tetrakaidecagon)--14
pentadecagon (or pentakaidecagon)--15
hexadecagon (or hexakaidecagon)--16
heptadecagon (or heptakaidecagon)--17
octadecagon (or octakaidecagon)--18
enneadecagon (or enneakaidecagon)--19
icosagon--20
icositetragon (or icosikaitetragon)--24
triacontagon--30
tetracontagon (or tessaracontagon)--40
pentacontagon (or pentecontagon)--50.
Please mark me as brainliest. Thanks!!

babunello [35]3 years ago

5 0

Octagon...it has 8 sides

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Solve for x.

olga nikolaevna [1]

Answer:

$\boxed{x=5},x=-9$

Step-by-step explanation:

To rid the denominators, multiply both sides by $(x-3)(x+1)$ .

We get:

$6(x+1)-12(x-3)=(x-3)(x+1)$

Simplifying, we have:

$6x+6-12x+36=x^2-3x+x-3,\\-6x+42=x^2-2x-3,\\x^2+4x-45=0$

Solving, we get:

$x^2+4x-45=0,\\(x-5)(x+9)=0,\\x=5,x=-9$

Therefore, the solution with the greatest value is $x=\boxed{5}$

8 0

3 years ago

(will give brainliest!)

Flura [38]

Answer:

D) cot(C) = 1/2.

Step-by-step explanation:

We can go through each choice and examine is validity.

Choice A)

We have:

$\displaystyle \sec B=\frac{3}{7}$

Recall that secant is the ratio of the hypotenuse to the adjacent.

With respect to B, the adjacent is 6 and the hypotenuse is 7.

Therefore, sec(B) should be 7/6 instead.

A is incorrect.

Choice B)

We have:

$\displaystyle \cot B=\frac{3}{2}$

Cotangent is the ratio of the adjacent side to the opposite.

With respect to B, the adjacent side is 6 and the opposite side is 3.

Therefore, cot(B) = 6/3 = 2.

B is incorrect.

Choice C)

C is incorrect for the reasons listed in A.

Choice D)

We have:

$\displaystyle \cot C=\frac{1}{2}$

Again, cotangent is the ratio of the adjacent side to the opposite.

With respect to C, the adjacent side is 3 and the opposite side is 6.

So, cot(C) = 3/6 = 1/2.

Therefore, D is the correct choice!

8 0

3 years ago

Dans computer reads 68% of battery left after 1 hour. If the rate of using power remains the same, about how much longer will hi

Tanya [424]

Answer:

28 minutes

Step-by-step explanation:

Dans computer reads 68% of battery left after 1 hour. This means that 1 hour is 68% of the computer's entire battery life.

Let the entire battery life be x (in hours). Hence:

$\frac{1}{x} * 100 = 68$

Therefore:

$\frac{100}{x} = 68\\\\x = \frac{100}{68}$

=> x = 1.47 hrs = 1 hr 28 minutes

Hence, the entire battery life is 1 hr 28 minutes.

If 1 hour has elapsed, the remaining time left for his battery to provide power will therefore be:

1 hr 28 minutes - 1 hr = 28 minutes

His battery will provide power for 28 more minutes.

7 0

3 years ago

PLS HELP I NEED HELP

Vinvika [58]

Answer:

yo dont click that link hes a scammer thats an ip grabber

4 0

3 years ago

Can someone please help me? If it is correct ai will give Brainliest Thank you

Rasek [7]

9514 1404 393

Answer:

Step-by-step explanation:

Collecting terms of the expression, we have ...

x + 0.1x = x(1 +0.1) = 1.1x

In words, adding 10% is the same as multiplying the value by 1.1. Choice A is appropriate.

7 0

3 years ago