The plate for a microscope has a circumference of 100pi millimeters. What is the area of the plate? Round to the nearest hundredth, if necessary.

Answers

Answer 1

The area of the plate is 7850 square millimeters.

Important information:

Circumference of the plate is [tex]100\pi[/tex] millimeters.Area of circle:

Circumference of a circle with radius [tex]r[/tex] is:

[tex]C=2\pi r[/tex]

[tex]100\pi=2\pi r[/tex]

[tex]\dfrac{100\pi}{2\pi}=r[/tex]

[tex]50=r[/tex]

The radius of the plate is 50 millimeters.

Now, the area of the plate is:

[tex]A=\pi r^2[/tex]

[tex]A=(3.14)(50)^2[/tex]

[tex]A=(3.14)(2500)[/tex]

[tex]A=7850[/tex]

Therefore, the area of the plate is 7850 square millimeters.

Find out more about 'Area of circle' here:

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Related Questions

It’s multiple choice

Answers

Answer: [tex]r^\frac{1}{4}[/tex]

Step-by-step explanation:

[tex]\sqrt[44]{\frac{r^5}{r^-^6} }[/tex]

When dividing by the same base (r) subtract exponents.

[tex]\sqrt[44]{r^5^-^(^-^6^)}[/tex]

[tex]\sqrt[44]{r^5^+^6}[/tex]

[tex]\sqrt[44]{r^1^1}[/tex]

A property of the roots say:

[tex]\sqrt[n]{x^m}=x^\frac{m}{n}[/tex]

Therefore;

[tex]\sqrt[44]{r^1^1}=r^\frac{11}{44}=r^\frac{1}{4}[/tex]

Answer for this r1/4 I took this

Factor the trinomial
The factors of m^2+12m+35 are ____ and ____

Answers

Factor:

(m+5)(m+7)

Solve for the numbers inside, set it = to 0:

m+5=0 >solve
m=-5

m+7=0>solve
m=-7

Monique bought a shirt for $22.80 during a 30% off sale. How much does the shirt cost when it is not on sale?

Answers

Answer:

29.64

Step-by-step explanation:

First we multiply 0.3 with 22.8.This will give us 6.84 which is the 30% off.Now we add 22.80 and 6.84 and we will get our answer 29.64.

Answer:

22.80/100%   ?/30%

Step-by-step explanation:

100/10=10*3= 30 %

22.8/10=2.28*3=6.84

22.80-6.84=15.96

$ 15.96 But with out the discount it cost and adding 30 % to the price it will be $29.64.

I kinda did something wrong that i didn't notice.

The average cost c (in dollars) to manufacture x t-shirts is given by the function c=7x+325x. Express the number of t-shirts in terms of the average cost. X=

Answers

Answer:

[tex]x=\dfrac{325}{c-7}[/tex]

Step-by-step explanation:

The average cost c (in dollars) to manufacture x t-shirts is given by the function:

[tex]c=\dfrac{7x+325}{x}[/tex]

We are required to express the number of t-shirts in terms of the average cost.

First, we cross multiply

cx=7x+325

Bring the terms containing x to the left hand side

cx-7x=325

Factorize out x

x(c-7)=325

Divide both sides by c-7

[tex]x=\dfrac{325}{c-7}[/tex]

Therefore, the number of t-shirts, x in terms of the average cost, c is:

[tex]x=\dfrac{325}{c-7}[/tex]

The school that Eduardo goes to is selling tickets to a play. On the first day of ticket sales the school sold 7 senior citizen tickets and student tickets for a foral of . The school took in $190 on the second day by selling 14 senior citizen tickets and 6 student tickets. Find the price of a senior citizen ticket and the price of a student ticket

Answers

Answer:

Is there anything else to the question like a equation?

Step-by-step explanation:

Helpp plsss!!!! I've to submit ASAP

Answers

i don’t rly remember surface area i’m sorry i couldn’t help
The answer to 6. Is the height is 8.5

In this figure, the distance from A to B is 10 units. What else is true?

Answers

Answer:

The distance from A to C is also 10 units.

Step-by-step explanation:

:)

a to c is 10 units too

The volume of a cube depends on the length of its sides. This can be written
in function notation as (s). What is the best interpretation of (4) = 64?

Answers

The answer is Gonna was a great game and it is so far

A dilation centered at the origin maps the point (1,3) to the point (4,12). What is the scale factor of the dilation?

Answers

Answer:

4

Step-by-step explanation:

4,12

1,3

4/12=4

12/3=4

The point (1,3) is mapped to the point by a dilation with the origin as the center. The dilation's scale factor is 4.

Explain about the Dilation?

Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is an image with the same shape as the original.

Finding the dilation's centre point is the first step in determining the scale factor. Next, we measure the distances between the centre point and various points on the preimage and the image. The ratio of these distances gives us the scale factor, as Math Bits Notebook accurately states.

The basic formula to find the scale factor of a dilated figure is: Scale factor is equal to the difference between the dimensions of the old and new shapes.

= 4,12

= 1,3

= 4/12 =4

= 12/3 =4

To learn more about Dilation refer to:

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#SPJ2

A mass attached to a spring is pulled toward the floor so that its height above the floor is 10 mm (millimeters). The mass is then released and starts moving up and down reaching maximum and minimum heights of 20 and 10 mm , respectively, with a cycle of 0.8 seconds.
Assume that the height h(t) of the mass is a sinusoidal function, where t is the time in seconds, sketch a graph of h from t = 0 to t = 0.8 seconds. t = 0 is the time at which the mass is released.
Find a sinusoidal function for the height h(t).
For how many seconds is the height of the mass above 17 mm over one cycle?

Answers

Answer:

a) The mass is released at t = 0 when h is minimum. Half a cycle later h reaches its maximum and another half a cycle it reaches its minimum again. Hence over one cycle, h varies with t as follows:

b) According to the graph obtained in part a), h(t) could be modeled by a cosine function shifted (translated) vertically up and horizontally to the right. Hence

Step-by-step explanation:

Find the surface area of the prism. Write your answer as a decimal.

Answers

Answer:

382.5 in²

Step-by-step explanation:

2 triangles + 3 lateral sides

2(½ × 10 × 9) + (10 × 9) + (9 × 9) + (13.5 × 9)

90 + 90 + 81 + 121.5

382.5 in²

Answer:

[tex]382.5 {in}^{3} [/tex]

Step-by-step explanation:

hope this helps

What is cumulative frequency

Answers

Explanation:

Cumulative frequency analysis is the analysis of the frequency of occurrence of values of a phenomenon less than a reference value. The phenomenon may be time- or space-dependent. Cumulative frequency is also called frequency of non-exceedance.

Cumulative frequency is defined as a running total of frequencies. The frequency of an element in a set refers to how many of that element there are in the set. Cumulative frequency can also defined as the sum of all previous frequencies up to the current point.


More than one quarter of The Netherlands lies below sea level. Lucas visits a museum located at an elevation of 7 m and bicycles to the neighborhood of Purmerend which has an elevation of -16 m. Which integer represents his change in elevation for the trip.

0 m
-23 m
-9 m
9 m

Answers

It would be -9 cause the elevation decreased by 9

WILL MARK BRAINLEST IF RIGHT.

Answers

Answer: 49.39

Step-by-step explanation:

Answer:

49.32

Step-by-step explanation:

Mr. Wilson bought a bag of bird seed and put half of it in the bird feeder.He split the other half equally among his 4 parrot birds how much of the bag did each pet bird eat

Answers

Answer:

Each parrot Bird ate 1/8 of a bag

Step-by-step explanation:

Here, we are interested in calculating the portion of the bag eaten by each of the pet birds

Firstly, we know he put 1/2 in the feeder, the amount not put in the feeder = 1-1/2 = 1/2 bag

Now this 1/2 bag was shared amongst 4 parrot birds, amount eaten by each of the parrot birds = 1/2 divided by 4 = 1/8 of the bag

what is the factor of -12n - 20 ( 50pts!!!!!)

Answers

Answer:

-4(3n + 5)

Step-by-step explanation:

We want to factor the expression:

-12n - 20

Look at the two terms, which are -12n and -20. Obviously, they don't share an "n", but they do share another number.

Notice that -12 can be written as the product of -4 and 3: -12 = -4 * 3. Similarly, -20 can be written as the product of -4 and 5: -20 = -4 * 5. Since 3 and 5 are prime numbers, we know that -4 is the biggest factor that -12 and -20 share. So, let's factor that out of the expression:

-12n - 20 = -4 * [(-12n/-4) + (-20/-4)] = -4 * (3n + 5)

So, the factored form of this expression is -4(3n + 5).

Steps to factor:

-12n - 20

~Rewrite -12n

-4 * 3n

~Rewrite -20

-4 * 5

~Put together

-4 * 3n + -4 * 5

~Factor out -4

-4(3n + 5)

Best of Luck!

If £2000 is placed info a bank account that pays 3% compound interest per year, How much will be in the account after 2 years?
(Giving brainliest)

Answers

Answer:

1880

Step-by-step explanation:

someone please answer this for me! it’s timed

Answers

Answer:

151 degrees

Step-by-step explanation:180 - 29=151

Do 1,2 for 5-8 points.

Answers

Answer:

15 +16 +17

21+23+25

Step-by-step explanation:

The state fair is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 1 van and 10 buses with 258 students. High School B rented and filled 8 vans and 5 buses with 264 students. Each van and each bus carried the same number of students.How many students can a van carry? How many students can a bus carry?

Answers

Answer:

The van holds 18 students

The bus holds 24 students

Step-by-step explanation:

v = van  b = bus

High School A

1v+10b = 258

High School B

8v+5b = 264

Multiply the second equation by -2

-16v - 10b = -528

Add  this to the first equation

-16v - 10b = -528

1v+10b = 258

---------------------------

-15v      = -270

Divide each side by -15

-15v/-15 = -270/-15

v =18

The van holds 18 students

Now we need to find the number the bus holds

1v+10b = 258

18 + 10b = 258

Subtract 18 from each side

18-18+10b = 258-18

10b=240

Divide each side by 10

10b/10 =240/10

b = 24

The bus holds 24

Answer:

Van: 18

Bus: 24

Step-by-step explanation:

V + 10B = 258

V = 258 - 10B

8V + 5B = 264

8(258 - 10B) + 5B = 264

2064 - 80B + 5B = 264

75B = 1800

B = 24

V = 258 - 10(24) = 18

solve 2x + 26=2 [5-3x]

Answers

Step-by-step explanation:

2x+26=2(5-3x)

2x+26=10-6x

combination of like terms

2x+6x=10-26

8x= -16

x= -16/8

x= -2

Find the area? Please help

Answers

Answer:

6.285

Step-by-step explanation:

π·22≈12.56637 divided by 2 (half) is 6.285

Answer:

12.56 units squared

Step-by-step explanation:

find the area of the whole circle:

formula for this is: pi multiplied by the radius which is squared.

The math for this is Below

3.14 x 2 squared

2 squared is 4

so 4 times 3.14 which is 12.56

please help will mark brainly

Answers

Answer:

1 hour and 5 minutes

Step-by-step explanation:

Because Sam started cycling at 2:40 and he stopped cycling at 3:45 so cycled for 1 hour and 5 minutes its asking for total time cycling so its 1 hour and 5 minutes

Solve the equation 3(x + 4.5) = 36. If you get stuck, use the diagram.

What is the solution x =

Answers

Answer:

x = 7.5

Step-by-step explanation:

Answer:

X is 7.5

Step-by-step explanation:

36 ÷ by 3 = 12

12 - 4.5 =7.5

Therefore X is 7.5.

Hope this Helps!

I NEED HELP FAST, 20 POINTS
Which of the following fractions is not equivalent to 2?

1 4/4
10/5
3/6
2/1


Answers

Answer:

The 1st one  1 4/4 and the 3rd one 3/6

Step-by-step explanation:

10/5=2

2/1=2

Find the area of the shape shown below.
3.5,2,2,2,2,5

Answers

Answer:

26.75

Step-by-step explanation:

It is 26.75 because if you split the traingle in half from the bottom to the top you look to find the area of each shape, so the sqaure has a measure of 2 by 2 so that is four then the smaller triangle has a measure of 2 by 2 but the formula for triangles are length times height divided by 2 and the area for that is 2. Then the other smaller triangle is 5 * 2 which is 10 then divide it by 2 so it is 5 so all together it is 9. then the area of the biggest triangle is 15.75

Answer:

26.75

Step-by-step explanation:

got it off khan

6
The sun is at an angle of
elevation of 58º. A tree casts a
shadow 20 meters long on the
ground. How tall is the tree?
a) 71 m
b) 11 m
c) 17 m
d) 80 m
e) 32 m

Answers

Im not super sure but I'm pretty sure it's A. I'm sorry if I'm wrong but this was also a question I need the explanation for.

Mariska was comparing her options for investment. One choice she was looking at showed that her principal of $1,875 over 10 years would earn $1,125 in interest giving her a total of $3,000 at the end of the investment period. What interest rate is being used to calculate this investment?

Answers

Answer: 6%

Step-by-step explanation:

Principal= $1875

Time= 10 years

Interest= $1125

Rate = Unknown

Recall that,

Interest= (Principal×Rate×Time)/100

I = PRT/100

100I = PRT

R= (100×I)/PT

Rate = (100 × 1125)/(1875 × 10)

Rate = 112500/18750

Rate= 6%

The rate is 6%

Raheem found a worm that was 9 centimeters long what is the length of the worm in in millimeters? Just answer the question in number form do not add millimeters when adding your answer

Answers

Answer:

90

Step-by-step explanation:

When converting from centimetres to millimetres you must multiply by ten. 9cm x 10 = 90mm

HELP ASAP PLS HELP PLSSSS

Answers

Answer 12.69

Step-by-step explanation:

Answer:

12.65 units

Step-by-step explanation:

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