A rotating wind turbine has a diameter of about 145 feet and its circumference is about 456 feet. A smaller model of the turbine has a circumference of about 16 feet. What will the diameter of the model be? If necessary, round to the nearest whole number.

The diameter of the model will be about ___ feet

Answers

Answer 1

Answer:

ross-multiplication.

circumference divided by the diameter

10/x = 580/185

10x185=1850

1850/580=3.189

Step-by-step explanation:

give me brainliest

Answer 2

Answer:

7 feet.

Step-by-step explanation:

Solve

Set up a proportion using the given information for the turbine and its model.

C /d =  

C /d

Set up a proportion.

660 /210 =  

22/ d

Substitute the given values.

660 ÷ 30

210 ÷ 30  ≈  

22/ d

Since 660 divided by 30 is approximately 22, divide 210 by 30 to find the value of d.

660 /210  ≈  

22/ 7

 d ≈ 7

The diameter of the model is approximately 7 feet.


Related Questions

if you can buy 3 loaves of bread for $5 how many loaves can you buy for $12

Answers

Answer:

You can buy 6 because it cost 2.50 for 1 loaf

Step-by-step explanation:

5.6 x 10 __= 5,600
hurry

Answers

Answer:

its 10^3 power or 1000

Step-by-step explanation:

One serving of yogurt is 95 calories. How many calories are in 2.5 servings of yogurt ?

Answers

Answer:

237.5 calories

Step-by-step explanation:

One serving has 95

so 2.5 serving has

2.5×95= 237.5

Plz mark brainliest

thanks

can someone help me with this

Answers

3 + 6 ( 4 + 3 ) is the answer

Answer:

30

Step-by-step explanation:

3 + (6 * 4) + 3 = 30

hope this helps

Daryl has 7 hats. David has h times more hats than Daryl. How many hats does David
have?
for 10 points!!

Answers

Answer:

David has 7h hats

Step-by-step explanation:

Daryl: 7

David: 7h

1- The Canada Urban Transit Association has reported that the average revenue per passenger trip during a given year was $1.55. If we assume a normal distribution and a standard deviation of 5 $0.20, what proportion of passenger trips produced a revenue of Source: American Public Transit Association, APTA 2009 Transit Fact Book, p. 35.
a. less than $1.55?
b. between $1.15 and $1.95? c. between $1.35 and $1.75? d. between $0.95 and $1.55?

Answers

Answer:

0.5

0.9545

0.68268

0.4986501

Step-by-step explanation:

The Canada Urban Transit Association has reported that the average revenue per passenger trip during a given year was $1.55. If we assume a normal distribution and a standard deviation of 5 $0.20, what proportion of passenger trips produced a revenue of Source: American Public Transit Association, APTA 2009 Transit Fact Book, p. 35.

a. less than $1.55?

b. between $1.15 and $1.95? c. between $1.35 and $1.75? d. between $0.95 and $1.55?

Given that :

Mean (m) = 1.55

Standard deviation (s) = 0.20

a. less than $1.55?

P(x < 1.55)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.55 - 1.55) / 0.20 = 0

p(Z < 0) = 0.5 ( Z probability calculator)

b. between $1.15 and $1.95?

P(x < 1.15)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.15 - 1.55) / 0.20 = - 2

p(Z < - 2) = 0.02275 ( Z probability calculator)

P(x < 1.95)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.95 - 1.55) / 0.20 = 2

p(Z < - 2) = 0.97725 ( Z probability calculator)

0.97725 - 0.02275 = 0.9545

c. between $1.35 and $1.75?

P(x < 1.35)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.35 - 1.55) / 0.20 = - 1

p(Z < - 2) = 0.15866 ( Z probability calculator)

P(x < 1.75)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.75 - 1.55) / 0.20 = 1

p(Z < - 2) = 0.84134 ( Z probability calculator)

0.84134 - 0.15866 = 0.68268

d. between $0.95 and $1.55?

P(x < 0.95)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (0.95 - 1.55) / 0.20 = - 3

p(Z < - 3) = 0.0013499 ( Z probability calculator)

P(x < 1.55)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (1.55 - 1.55) / 0.20 = 0

p(Z < 0) = 0.5 ( Z probability calculator)

0.5 - 0.0013499 = 0.4986501

Order the side lengths HI, IK, HJ, IJ, and K J from least to greatest.

Answers

Answer:

I think it's IH, IJ, JK, HJ, IK.

What type of angle is shown?​

Answers

An obtuse angle because an obtuse is an angle that is greater than 90 degrees but less than 180.

Answer:

B. Obtuse angle

Step-by-step explanation:

Remember that a right angle is 90 degrees and would be like the edge of a square or rectangle going completely vertical. An obtuse angle is larger than 90 degrees so the vertex or point where both lines connect would have both lines farther apart. An acute angle is smaller than a 90-degree angle and is closer to touching the lines (a tip for remembering acute angles could be "a-cute angle" or a smaller cute angle). Hope this helps!

help meeeeeeeeeeeeeeeeeee

Answers

Answer:

18

Step-by-step explanation:

the other right triangle is 3-4-5. so, 3*4/2=6

4*6/2=12

6+12=18

give brainliest pls

The answer should be 18

57.351 rounded to the ones place

Answers

How do you round to the ones place?

Look to the next smallest place value, the digit to the right of the place value you're rounding to. For example, if you want to round to the nearest ten you'd look at the ones place. If the digit in the next smallest place value is less than five (0, 1, 2, 3, or 4), you leave the digit you want to round to as-is.

Answer:

Step-by-step explanation:

do u mean round to the nearest 10th as in one decimal place or to the nearest  one not decimal place?

The graph of y=-3x+4 is:
A. a point that shows one solution to the equation.
B. a line that shows only one solution to the equation.
c. a line that shows the set of all solutions to the equation.
D. a point that shows the y-intercept.

Answers

the answer is C! a line that shows the set of all solutions to the equation :)

Question 3
And question 4 pleaseeee help!!

Answers

Answer:

see pdf

Step-by-step explanation:

Picture attached - Two Column Proof - NEED HELP PLS PLS PLS WILL MARK BRAINLIEST

Answers

Answer:

hmm its would be o

Step-by-step explanation:

its O

Mrs. Jones places 3 orders for school T-shirts. Each order has 16 boxes of shirts and each box holds 17 shirts. How many T-shirt does Mrs.Jones order?

Answers

Answer:

816 T-shirts

Step-by-step explanation:

16 boxes * 17 shirts = 272 shirts total in 16 boxes

272 shirts * 3 orders = 816 shirts

Find the distance represented by x

Answers

180

Explanation:
Set a equation of a ratio 120/90=x/135
And calculate!
90x=(120)(135)
90x=16200
x=180

the distance of X is 180ft

A U.S. government survey in 2007 said that the proportion of young Americans that earn a high school diploma is 0.87. a)Suppose you took a simple random sample of 100 young Americans. We know because of sampling variability that the sample proportion of those who earned a high school diploma would vary each time you took a sample. Assuming the value above can be taken as the population proportion (i.e. as a parameter), what model can be used to describe how these sample proportions would vary

Answers

Answer:

normal distribution can be used to model the sample proportions

Step-by-step explanation:

N ( sample size ) = 100

probability of earning high school diploma (p)  = 0.87

probability of not earning high school diploma ( q ) = 0.13

hence ;

∈( P ) = p = 0.87

Var ( p ) = [tex]\frac{pq}{n}[/tex]  = [tex]\frac{0.86 * 0.13 }{100}[/tex]  = 0.001131

therefore ; p ~ N = ( 0.87 , 0.001131 )

If f(x) = 4x + 5, what is the inverse of F(x)?

Answers

Answer:

f^-1(x) = 1/4 x - 5/4

Step-by-step explanation:

f(x) = 4x + 5

y = 4x + 5

x = 4y + 5

4y = x - 5

y = 1/4 x - 5/4

f^-1(x) = 1/4 x - 5/4

A snail can crawl 2/5 of a meter in a minute.


How many minutes will it take the snail to crawl 6 meters?


Please give me an answer A S A P.

Answers

15 minutes to crawl 6 meters
6/0.4= 15
The snail crawls .4 meters per minute and .4*15=6

Which of the following represents a reflection of (-3, 4) across the y-axis?
(-4, 3)
O (-3,-4)
O (3, 4)
O (4, -3)

Answers

(-4, 3) is the right one






1, 4, 16, 64, ______what follows

Answers

Answer:

[tex]256[/tex]

Step-by-step explanation:

[tex]We\ observe\ that,\\For\ every\ number\ n\ in\ the\ sequence, the\ number\ next\ to\ it\ is\ 4n.\\Hence,\\In\ order\ to\ continue\ the\ sequence:\\1,4,16,64,256[/tex]

Answer:

1, 4, 16, 64, 256

Step-by-step explanation:

The sequence follows the rule: n * 4

1 * 4 = 4

4 * 4 = 16

16 * 4 = 64

Multiply 64 by 4.

64 * 4 = 256

Hope this helps.

Mary is 3 years older than twice her brother's age, a. Which expression
represents Mary's age?
A. 2a + 3

B. 2a - 3
C. 3a + 2

D. 3a - 2

Answers

Answer:

C. 3a + 2

Step-by-step explanation:

brainiest plz

the answer is a


explanation: if she’s 3 years older you will have to add that on to the brothers age (a) and a needs to be multipled by 2 cuz it says twice than

What is the equation relating x and
y together?
y
1
2
3
4
5
25
23
21
19
17
y=-2x + [?]

Answers

Answer:

ommmm I have no idea Butt 1 of my fav numb is 17 so pick that

HELP DUE IN 2 MIN
The ratio of boys to girls in a classroom is 6 to 5. If
there are a total of 18 boys in the classroom, find
the number of girls in the classroom.

Answers

Answer:

15

Step-by-step explanation:

18/3=6

15/3=5

Answer:

15

Step-by-step explanation:

If the ratio is 6:5 and we know the boys are 18, we have 18:?

18/6=3, so we have to do 5*3. 5*3=15.

The ratio is 18:15, the number of girls in the classroom is 15

Verify sin4x-sin²x=cos4x-cos²x is an identity.
the 4 is supposed to be small like the 2

Answers

Answer:

It's an identity

Step-by-step explanation:

[tex]\sin^4x-\sin^2x=\cos^4x-\cos^2x\\\\Ls=\sin^2x(\sin^2x-1)=-\sin^2x(1-\sin^2x)=-\sin^2x\cos^2x\\\\Rs=\cos^2x(\cos^2x-1)=-\cos^2x(1-\cos^2x)=-\cos^2x\sin^2x\\\\Ls=Rs\\\\\text{used}\\\\a^n\cdot a^m=a^{n+m}\\\\\text{distributive property}\ a(b+c)=ab+ac\\\\\sin^2x+\cos^2x=1\to \sin^2x=1-\cos^2x\\\\\sin^2x+\cos^2x=1\to \cos^2x=1-\sin^2x}[/tex]

20 pts and brainlyest to correct-

Answers

Answer: c

Step-by-step explanation:

First find 2 points like say

(0,3) and (1,-2)

now find the slope

3-(-2)/0-1 = -5

the y intercept is already known so the equation is y=-5x+3

Slope for (5,-5) (3,5)

Answers

Answer:

-5

Step-by-step explanation:

5-(-5)/3-5=10/-2=-5

(can I get brainliest please)

5x+-30. I hope it helped

what is the relationship of the angles

Answers

Answer:

Alternate Interior Angles

Answer:

a

Step-by-step explanation:

Which equation should you solve to find x?

Answers

Answer:

B

Step-by-step explanation:

[tex]sin ~26^\circ=\frac{x}{10}[/tex]

Answer:

sin 26 = x/10

Step-by-step explanation:

Solve the equation.
k/-9 =7

Answers

Answer:

k=-63

Step-by-step explanation:

multiply both sides by -9

k=7*-9

k=-63

Answer:

-63

Step-by-step explanation:

by simplifying both sides of the equation, then isolating the variable.  k= -63

-9 x 7 = -63

I NEED HELP ASAP PLZ

Answers

first one

Step-by-step explanation:

Answer:

1/2 is the answer

Step-by-step explanation:

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