Mathematics College

Find the area (in square centimeters) of a regular pentagon

Answers

Answer 1

Answer:

Given

apothegm [a]=3.2cm

since Pentagon has 5 equal side

perimeter [P]=5×4.6=23cm

now

Area of regular pentagon

A=1/2 aP=1/2×3.2×23=36.8cm²

Related Questions

Find the diameter and circumference of each circle given its radius of 4 cm. Use pi = 3.14 and round answers to the nearest tenth.

Answers

Lol I had this still when I was learning that
Btw: c is the circumference
If u have any questions just comment them

What is the slope of the equation c=2m+40

Answers

Answer:

Slope is m = 2

tep-by-step explanation:

Answer:

slope=2

Step-by-step explanation:

help pls will give brainliest to correct answer

Answers

D is correct answers

In AXYZ, ZX=13° and XY=63º. ZXWZ=90° and XY=690. Find the length of XW to
the nearest 10th.

Answers

We want to find WZ, so we focus on right triangle YWZ. Side WY is half the length of XY because WZ is a line bisector of XY. Therefore, YW is 4.25

Now, we have a right triangle with a known angle and a known side. With this type of triangle, we can use basic trigonometry applications.

The side opposite to the 90 degree angle is the hypotenuse. The hypotenuse is YZ. The two legs are WZ and YW.

We can use cosine function to find tangent because the YZ is not known.

tangent is side opposite of angle divided by side adjacent to angle.

tan(72) = WZ / 4.25

4.25tan(72) = WZ

0.3 = WZ

What's the perimeter?

Answers

Answer:

B. 24

Step-by-step explanation:

You add a+b+c.

A would be 5in

B would be 5in again because you can see they are the same

C would be 6in

Then you would add them all together.

5+5=10

10+6=16

Then you would multiply this by 1 1/2

This will equal out to 24

HOPE THIS HELPS

decide if the two statements are logically equivalent statements, negations or neither

Answers

Answer:

Negations.

Step-by-step explanation:

The first statement is:

p ∧ q

(p and q)

This statement is only true when:

p = true

and

q = true.

And is false in all the other cases.

The other statement is:

¬q ∨ ¬p

(not q or not p)

This statement is only true if at least one of the elements is true, this happens if:

q =false (then ¬q = true)

p = false (then ¬p = true)

Then the first statement needs p and q to be true.

The second statement needs at least one of these to be false.

This means that when the first statement is true, the second statement is false.

When the first statement is false, the second one is true.

Then the statements are negations.

Is (0,0) (0,100) endpoints of a vertical line, a horizontal line, or neither?

Answers

Answer:

it's a vertical line.

Step-by-step explanation:

only the Y coordinate changes making it vertical

11. Which of the following shows the first 5 terms in
the sequence defined by f(1) = -8, f(n) = 2f(n - 1)?
f. 2, -16, 128, -1024, 8192
h.2, -6, -14, -22,-30
g. -8, -16, -32, -64, -128
j. -8, -6, -4, -2,0

Answers

G is the answer to question

Which of the following polynomials is guaranteed by the Intermediate Value Theorem to have a zero on the interval [−4,−1]?

Answers

Answer:

Step-by-step explanation:

because 4-1=3

The polynomials are not given, but we can answer in a general way.

Basically, what you need to test is:

Sign[p(-4)] ≠ Sign[p(-1)]

But let's see why.

The intermediate value theorem says that, if for two values a and b such that:

a < b

If we have a given continuous function such that:

f(a) < 0 and f(b) > 0.

f(a) > 0 and f(b) < 0

Then there exists a value c

a < c < b

Such that:

f(c) = 0

So to find the correct polynomial, you just need to evaluate it in both extremes of the interval and you should see that the sign changes.

This means that if p(x) is the polynomial, then you should have:

Sign[p(-4)] ≠ Sign[p(-1)]

This will imply, by the intermediate value theorem, that the polynomial is equal to zero for some given value on the given interval.

If you want to learn more, you can read:

https://brainly.com/question/23792383

Jasmine and Olivia each have a bracelet collection.
The number of bracelets in Jasmines collection is represented by x.

The number of bracelets in Olivia's collection is 4 times the number in Jasmines collection

The total amount of bracelets in both collections is 45
What is x, the amount of bracelets in Jasmines collection?

Answers

Answer:

x = 11.25

Step-by-step explanation:

4x=45

divide 4 from both sides

4/4 x = 45/4

x= 11.25

Answer:

x= 11.25

Step-by-step explanation:

4x = 45

Skiffjsjdbbdbcbdhfhvvvvvvvvvvvv

Answer:

8 peanut cookies

Step-by-step explanation:

4 x 12 = 48

48 x 1/3 = 2/3 left (16 chocolate chip)

48-16= 2/3 = 32 left

32 x 3/4 = 24 (24 gingersnaps)

32-24 = 8 ( 8 peanut cookies)

The altitude of a triangle is 5 less than its base. The area of the triangle is 42 square inches. Find its base and altitude.

Answers

9514 1404 393

Answer:

base: 12 in

altitude: 7 in

Step-by-step explanation:

The formula for the area of a triangle is ...

A = 1/2bh

Filling in the given information, we have ...

42 = 1/2(b)(b -5)

b^2 -5b -84 = 0 . . . . multiply by 2, put in standard form

(b -12)(b +7) = 0 . . . . factor

The only positive solution is b = 12

The base is 12 inches; the altitude is 7 inches.

When dealing with an equation containing two variables, we can put the graph of the equation on the coordinate plane because the number of variables is equal to the number of dimensions that are needed to properly graph the solution. Each ads on a graph represents one variable in the equation being graphed. What would you use to graph the solution to an equation with one variable? What would you use to graph the solution to an equation with three variables Could you graph an equation containing more than four variables Explain. If you were given the graph of an equation with two variables on a coordinate plane, what would happen to the graph if all the y-values were increased by 19 What would happen to the graph it all the values were increased by 19 What would happen to the graph if all the y-values were multiplied by 2 or by 1129 Explain

Answers

Answer:

that sounds rlly confusing ngl hope u get it right

Step-by-step explanation:

10
TIME REMAININ
58:05
The point plotted on the number line is a
5
What is the approximate value of x?
4
9
17
20

Answer:30

Step-by-step explanation:26+4

If these numbers represent elevations in meters, which is the farthest away from sea level? Explain please I don't understand. (I've sorted them from least to greatest if that helps)
-12, -¾, -0.4, 0.4, ¾, 8

Answers

9514 1404 393

Answer:

-12 m

Step-by-step explanation:

The question is equivalent to asking which of these plotted on a number line is farthest from zero.

Since you have put them in order, you're aware the extremes are -12 and +8. -12 is 12 units from zero, but +8 is only 8 units from zero. An elevation of -12 m is farthest from sea level.

For the following right triangle, find the side length x.
X
12
35
help pls

Answers

Answer:

the length of side X is 37

If comparing x^2 to x^3, which value of x gives the greatest difference:x=6,x=8,x=10?

Answers

Answer:

the value of x that gives the greatest difference is 10.

Step-by-step explanation:

Given;

x² and x³

values of x = 6, 8 and 10

When x = 6

6³ - 6² = 216 - 36 = 180

When x = 8

8³ - 8² = 512 - 64 = 448

When x = 10

10³ - 10² = 1000 - 100 = 900

Therefore, the value of x that gives the greatest difference is 10.

PLEASE HELP!! 30 POINTS

Answers

Answer:

I think it is A I did the math but not all the way convinced

Step-by-step explanation:

PLS HELP
Rusty has a cap collection. He has 5 shelves with 7 football team caps on each shelf. He has 3 shelves with 13 baseball caps on each shelf. He gives his best friend 5 football caps and 2 baseball caps.

How many caps, c, does Rusty have now?

Rusty has a total of ___ caps.

Answers

19

hope this helps today buddy

Answer:

Step-by-step explanation:

a seventh grade special education classroom consists of 14 girls and 16 boys. If 10 of the students are selected at random to help a fourth grade math class, determine the probability that all boys will be selected.

Answers

Answer:

8/30015 or .037%

Step-by-step explanation:

16/30 × 15/29 × 14/28 × 13/27 × 12/26 x 11/25 x 10/24 × 9/23 × 8/22 × 7/21

= 8/30015

HELP ME PLEASEEEEEEEEEEEEE

Answers

Answer:

Step-by-step explanation:

Brₐinliest plz close to leveling up

D if wrong i am sorry

A line that includes the points (9,j) and (10,4) has a slope of 1. What is the value of j?

Answers

Answer:

soln

A=(9,j)

x1=9,y1=j

B=(10,4)

x2=10,y2=4

slope=1

by using the fomulaof slope,

slope=y2-y1/x2-x1

1 =4-j/10-9

1 = 4-j/1

1=4-j

j=4-1

j=3

Answer:

j = 3

Step-by-step explanation:

(9 , j) ; [tex]x_{1}= 9[/tex] and [tex]y_{1} = j[/tex]

(10, 4) ; [tex]x_{2} = 10[/tex] and [tex]y_{2} = 4\\\\[/tex]

[tex]Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\ \frac{4 - j}{10-9} = 1\\\\\frac{4 - j}{1}=1[/tex]

4 - j = 1 {Subtract 4 from both sides}

-j = 1 -4

-j = -3 {Multiply both sides by (-1) }

j = 3

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