A regular pentagon with side length s has perimeter 5s. Dakota built a dog pen in her backyard for her dog's new puppies. The pen is shaped like a regular pentagon and has 40-inch sides.
What is the perimeter of the pen?
Write your answer as a whole number or decimal.

Sarah is on a 400 mile road trip. She has 114 miles left to travel. Her vehicle gets about 22 miles per gallon. She wants to know how many gallons of gasoline she has used.

Hilary and William both found the number of gallons of gasoline Sarah used on her trip. They each used a different method to solve the problem. Which statements are true? Check all that apply.

Simplify the expression: cos (7x) cos (4x) + sin (7x) sin (4x).

Its either

cos(11x)

cos(3x)

sin(11x)

sin(3x)

The ANSWER IS COS(3X)

The average surface temperature of a red giant star is much cooler than that of a white dwarf star. Suppose a white dwarf has a surface temperature of 1.2 x 10*4 Kelvin (abbreviated K), which is 4 times the temperature of a red giant star. WHat is the surface temperature of the red giant star?

–4c+–6–4c+4c

Solve.




















































































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Dont send me pdfs or links please answer correctly for brainliest

Determine whether each sample is unbiased with complete sentences.

The population is every pet at an animal shelter.

A. Sample: Every dog is used as the sample.

B. Sample: The animals are grouped by species (dog, cat, rabbit, etc.), and five animals from each group are randomly selected to determine their age.

C. Sample: Every animal's name is dropped into a container, and 15 names are pulled out of it.

Can someone help me?

My teacher said to put in simplisit form. and not to estimate.
I will give brainlisit !!!

will give brainliest

PLEASE HELP! ILL MARK BRAINLIEST

Measurements of atoms, such as amounts, distances, and weights, are often very large or very small when compared to measurements of things you can see or touch. Scientific notation represents numbers as a power of 10. This makes very large or small numbers easier to use and understand. Approximately 7,500,000,000,000 carbon atoms fit across the period that you make with your pencil. Express this number in scientific notation. (PLEASE ANSWER FAST I'LL GIVE BRAINLIEST ALSO PLEASE DO ALL THIS IS WORTH 30 POINTS)


Step 1 Rewrite the number with a decimal after the first nonzero digit.7.500000000000


Step 2 Find the number of places and the direction you moved the decimal. If a number does not show a decimal, the decimal is at the right end of the number.You moved the decimal 12 places to the left.


Step 3 Drop the zeros, and write the number of places you moved the decimal as a power of 10. If you moved the decimal to the right, the power is negative. If you moved the decimal to the left, the power is positive.7.5 × 10 12


Step 4 Reverse the process to change scientific notation back to a whole number. A positive power of 10 moves the decimal to the right. A negative power of 10 moves the decimal to the left.


(Answer 1, 2, 3, 4 and 5 )


1. A sample of gold contains 3,800,000,000,000,000,000 atoms. Express this number in scientific notation.


2. A sample of silver contains 400,000,000,000,000 atoms. Express this number in scientific notation.


3. A sample of carbon has a mass of 0.000000000000000000034 kg. Express this mass in scientific notation.


4. A sample of silicon contains 5.23 × 10^11 atoms. Write this amount as a whole number.


5. The mass of a proton is about 1.67 × 10 -27kg. Write this mass as a whole number

Imagine that you are filling treat bags with jellybeans. You have 3 3/8 cups of jellybeans, and each treat bag will contain 1/4 cup of jellybeans. How many treat bags can you fill before you ru out of jellybeans? Show your work (please).

(File attached) Show how you got the answer for brainliest

Sandy says the graph could represent a person's walk from home to school. Why is Sandy's analysis incorrect?


A. The person does not walk at a constant rate.
B. The person walks to school and then returns home.
C. The person's distance from home decreases as time passes.
D. The person does not travel far enough to be going to school.

helpppppppppp!!! :( math up ):

c) Explain how 223 compares to another mixed number.

______________________________________________________

4. Which of these is greatest?

A 4/5 × 10 1/2

B 2 1/2 × 16/5

C 3 2/3 × 2 1/2

D 2 0/3 × 9/10

(: il make u brainlist!!!! and give u a thank you!! + u get the points and ima add 5 stars :)

Barb purchased a loaf of bread for $2 and p pounds of sliced gam at $5 per pound for a total of 13.25. The relationship between what she purchased and her total purchase price is represented by the equation 5p + 2 = 13.25. What was the total number of pounds of ham that Barb purchased?

Find the rate in mountains per month

Find the area of the figure.

Which of the following is a true statement about forces?

a. If the forces are balanced, there is no movement.
b. If the forces are balanced, the object moves quickly.
c. If the forces are unbalanced, there is no movement.
d. If the forces are unbalanced, there is slow movement.

whats an equation equal to 10x-5​

Can I get some help with this question plzzz

Please help! Look at the picture.

Dr. Hudson has a clock decorating business. On her signature circular clock, she puts glitter tape around the outer trim. About how much tape does she need to make ten clocks if each signature circular clock has a radius of 6 in? Use 3.14 for pi.

I NEED HELP FAST! Find the surface area of the shape below

PLSSS HELPPPPPPP CORRECT ANSWERS PLSSSS

If you have 2+2^2 and/or 5^2s when s=14 how much will you have???

To graph the point (2, 10) on the coordinate plane, start at the origin. Move 2 units _______ and 10 units ________ . 40 points

How long does it take an account with a principal of $600 to earn $90 in interest at a simple annual interest rate of 5%

PLS PLS HELP I WILL MARK BRAINLIEST!

What is the formula for distance?
A. d = r + t
B. d = r – t
C. d = rt
D. d= r/t

plsss help this is due today

Can someone answer this for me