4 years ago

Help me with this pleaseeeeeeeeee

Mathematics

1 answer:

Drupady [299]4 years ago

3 0

Ok so you need help with questions 9 and 10?

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Given the regular octagon shown below, what is the measure of angle x?

vladimir1956 [14]

Answer:

$x=45$ °

Step-by-step explanation:

The angle shown in the figure is known as an external angle.

Also, <u>in a regular polygon (like the regular octagon) the sum of all the exterior angles is the same regardless of the number of sides of the figure</u>:

$360$ °

And to find the measure of a single external angle (such as the angle $x$ shown in the figure) we must <u>divide 360 ° by the number of sides n:</u>

$\frac{360}{n}$

and for the regular octagon, since it has 8 sides:

$n=8$

so the value of x is:

$x=\frac{360}{n}\\ \\x=\frac{360}{8}\\ \\x=45$ °

the measure of angle x is 45° which is the second option

3 0

3 years ago

yasmine bought 6 gallons of apple juice. after filing up 4 bottles of the same juice, she had 0.3 gallons of apple juice left. W

Mazyrski [523]

6 - 0.3 = 5.7 gallons

5.7/4 = 1.425 gallons in each bottle

6 0

4 years ago

On a test, Leo is asked to completely factor the polynomial 3x3 – 3x + 5x2 – 5. He uses double grouping to get (x2 – 1)(3x + 5).

Step2247 [10]

Answer:

Leo does not factored the polynomial completely.

3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Step-by-step explanation:

Given: On a test, Leo is asked to completely factor the polynomial

3x^3-3x+5x^2-5.

also, he uses double grouping to get (x^2- 1)(3x+5)

We have to explain whether he factored the polynomial completely or not.

Consider the given polynomial 3x^3-3x+5x^2-5.

after double grouping he get (x^2- 1)(3x+5)

Also, we can simplify further ,

Using algebraic identity a^2-b^2=(a+b)(a-b)

We get,

(x^2- 1)=(x+1)(x-1)

We get, (x^2- 1)(3x+5)=(x+1)(x-1)(3x+5)

Thus, 3x^3-3x+5x^2-5=(x+1)(x-1)(3x+5)

Thus, He does not factored the polynomial completely.

8 0

3 years ago

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A company that makes steel girders can produce 6 tons of girders in one day. How many pounds is this?

ki77a [65]

Serían 6.000 kg (si entendí bien)

3 0

3 years ago

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I dont get this question

VARVARA [1.3K]

I think C? I'm not sure but it seems like the most logical

5 0

3 years ago

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