Find the area of a regular pentagon with a side of 5cm round to nearest tenth

Answer:

angle ABC is 130 degrees

Step-by-step explanation:

This is the quickest and simplest way to gind the answer.

Angle CBD and angle ABC are linear pairs. Linear pairs are supplementary meaning angle CBD and angle ABC equal 180 degrees. Since angle CBD is 50 degrees and you know both angles need to add up to 180 degrees all you need to do is subtract 180 from 50 degrees.

Answer:

n, vsfd

Step-by-step explanation:

tmb te amo krai

Answer:

For the first two problems, there is nothing that I should solve for, lmk and I will solve it again. For now, I just solved for the sector.

Step-by-step explanation:

1. s=(7pi)/2

2. s=14pi/5

3. 240

4. s=((pi)r(<APC))/180

the circumference of the circle is 20pi and ABC is 16pi so the minor arc AC is 4pi=s

4pi=(pi)(10)(x)/180

x=72

Hope that helps :)

Use the below formula of Arc length

#1

L

#2

L

#3

Ø=111+129=240°

L

#4

Ø=

Answer:

B.Y=10

Step-by-step explanation:

Y=10 represents a parallel to the x-axis

Answer:

40

Step-by-step explanation:

because to find surface area, you need to know this formula: length * width * height.

so, 5 * 1 * 8 is 40

Given:

The system of equation is

[tex]y=-8x-3[/tex]

[tex]x+y=7[/tex]

To find:

Whether (3,4) is a solution of the given system or not.

Solution:

We have,

[tex]y=-8x-3[/tex]          ...(i)

[tex]x+y=7[/tex]            ...(ii)

Putting the value of y in (ii) from (i), we get

[tex]x+(-8x-3)=7[/tex]

[tex]x-8x-3=7[/tex]

[tex]-7x=7+3[/tex]

[tex]-7x=10[/tex]

Divide both sides by -7.

[tex]x=\dfrac{10}{-7}[/tex]

[tex]x=-\dfrac{10}{7}[/tex]

Putting [tex]x=-\dfrac{10}{7}[/tex] in (i), we get

[tex]y=-8\times (\dfrac{-10}{7})-3[/tex]

[tex]y=\dfrac{80}{7}-3[/tex]

[tex]y=\dfrac{80-21}{7}[/tex]

[tex]y=\dfrac{59}{7}[/tex]

So, the only solution of the given system is [tex]\left(-\dfrac{10}{7},\dfrac{59}{7}\right)[/tex].

Hence, (3,4) cannot be a solution of given system, Hence the correct option is B.

Answer: B I got it right in khan academy

Step-by-step explanation:

Answer:

x=1.46875 or x=1.5

Step-by-step explanation:

1st step subtract 1.8 on both sides

-9.6x=-14.1

2nd step divide -9.6 on both sides

x=1.46875

or

x=1.5

Hope this helps!!!

Have a good day!!!

Answer:

I love you hddmekelejeyeneoeleemeh

Answer:

1- 3520

2- 3328

3- 30

4- 3432

Step-by-step explanation:

========================================================

Explanation:

To find the prime factorization, we'll start by dividing 180 by the smallest prime number

Divide 180 by 2 to get 180/2 = 90

Divide that by 2 to get 90/2 = 45

Then note how 45/2 = 22.5 isn't a whole number, so that means we move onto the next prime number 3

45/3 = 15

15/3 = 5

The denominators we used, in order, were: 2, 2, 3, 3

This means that 2*2*3*3 is part of the factorization. We can condense that to 2^2*3^2

The last term 5 is the final missing piece of the factor puzzle

Meaning, 2^2*3^2*5 = 180

I recommend you use a calculator to confirm this.

Answer:

I think it would be finding the quantity in each group.

Step-by-step explanation:

Because there would be more than 1 group. there is only one group. so you are trying to find the number of hours each person in the group will get.

i think that is right sorry if not.

Answer:

The quantity, the kids would be the groups, we are not looking for the number of kids because we already know that. We're looking for the amount, or quantity each group (kids) gets.

Step-by-step explanation:

Answer: 2205

Step-by-step explanation:

Ratio of the number of students accepted to the number of students applying for admission = 2:7

Number of students accepted = 630 students

Number of students that applied will then be represented by x. This will be:

2/7 = 630/x

2 × x = 630 × 7

2x = 4410

x = 4410/2

x = 2205

The number of students that applied to the university was 2205

Answer:

[tex]Probability = \frac{8}{25}[/tex]

Step-by-step explanation:

Given

See attachment for graph

Required

Determine the probability of getting a score of 8 - 11 points in the next game

From the attachment, the frequency of the class 8 - 11 is:

[tex]Class\ 8 - 11 = 8[/tex]

Also, from the attachment, the total frequency is:

[tex]Total = 3 + 5 + 8 + 6+2+1[/tex]

[tex]Total = 25[/tex]

The required probability is:

[tex]Probability = \frac{n(8 - 11)}{Total}[/tex]

[tex]Probability = \frac{8}{25}[/tex]

Answer:

25,390

Step-by-step explanation:

The computation is shown below

Given that

There is a number i.e. 25387

Based on the above information

The given numbers should be written in 4 significant figures

So here the number after considering 4 significant figures is 25,390

Hence, the above represents the answer

3.5 or 7/2 if you need a fraction

Its 20 because, 32 -  9 = 23 and your rounding so its 20

Answer:

3

Step-by-step explanation:

it's an exponential function

Answer:

Step-by-step explanation:

68°

Answer:

A. 12

Step-by-step explanation:

$1,150.89 - $200.13 = $950.76

$950.76 / $79.23 weekly = 12 weeks

To check:

12 weeks x $79.23 = $950.76

$950.76 + $200.13 = $1,150.89

Answer:

66.7%

Step-by-step explanation:

Given that,

Weight in first five weeks = 4.5 pounds

Weight at eight weeks = 7.5 pounds

We need to find the increase in precentage. The percentage increase in any value is given by :

[tex]\%=\dfrac{\text{final-initial}}{\text{initial}}\times 100\\\\=\dfrac{7.5-4.5}{4.5}\times 100\\\\=66.7\%[/tex]

So, the increase in precentage is 66.7%.

Answer:

9/32

Step-by-step explanation:

3/4 of 3/8 is 0.28125 or 9/32

Answer:

Step-by-step explanation:

3/8 (left over - from party) of 3/4 : 3/4 of 3/8 = 9/32

Answer:

Step-by-step explanation:

Answer:

hello did you find the answer

Answer:

Use the formula for the volume of a triangular pyramid: V=13Ah , where A = area of the triangular base, and H = height of the pyramid.

Answer:

Step-by-step explanation:

sin30=a/17

a=17sin30

a=8.5 m

Answer:

r <5 u do 31-6 than divided by 5r

Answer:

We can write the position equation as:

P(t) = speed*time + initial position.

If we define Jabal home as the 0 of the position, then Jabal's initial position is 0m

And we know that his speed is 2.5 m/s, then his position equation is:

Pj(t) = (2.5 m/s)*t

We know that Michael speed is 6m/s, and we also know that his house is 15m further away from school than Jabal's one, then Michael's initial position is -15m

Michael's position equation is:

Pm(t) = (6m/s)*t -15 m

The boys will be walking together when they meet, and this will happen when their positions are the same, this means that:

Pj(t) = Pm(t)

That is the equation we need to solve for t.

(2.5 m/s)*t = (6m/s)*t -15 m

15m = (6m/s)*t  -  (2.5 m/s)*t  = (3.5 m/s)*t

15m/(3.5 m/s) = t = 4.28 seconds.

The boys will walk together after 4.28 seconds.

Answer:

Volleyball players want to keep their serves as close to the net as possible, so the ball travels for a shorter period of time. Say a volleyball player serves the ball across the court. If we can model this situation with the function y=-0.006(x−21)2+9, where x is the distance from the player and y is the height, then we can determine if the ball clears the net and lands in bounds 61 feet away1. It may be helpful to analyze this situation graphically, and we consider how to do that in this section.    

Step-by-step explanation:

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