1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fiesta28 [93]
3 years ago
15

Circle A has center of (4,6) and a radius of 5, and circle B has a center of (1,0) and a radius of 15. What steps will help show

that circle A is similar to circle B? Dilate circle Dilate circle A by a scale factor of 3. translate Circle A using the rule (x - 3, y + 6). Rotate circle A 180° about the center. reflect circle A over the y-axis.
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
8 0

Answer: 78

Step-by-step explanation:

You might be interested in
A teacher gives a test to a large group of students. The results are closely approximated by a normal curve. Teh mean is 73, wit
zavuch27 [327]

Answer:

The bottom for an A is 75. Round to the nearest whole number as needed.

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Let X the random variable that represent the scores on this case, and for this case we know the distribution for X is given by:

X \sim N(\mu=73,\sigma=7)  

And let \bar X represent the sample mean, the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

2) The bottom for an A is _____. Round to the nearest whole number as needed.

And we want the top 5.5% of the scores, so we need a value a such that:

P(X>a)=0.055 or P(X

We need on the right tail of the distribution a value a that gives to us 94.5% of the area below and 5.5% of the area above. Both conditions are equivalent.

Let's use the condition P(X, the best way to solve this problem is using the z score with the following formula:

z=\frac{x-\mu}{\sigma}

So we need a value from the normal standard distribution that accumulates 0.945 of the area on the left and 0.055 on the right. This value on this case is 1.598 and we can founded with the following code in excel:

"=NORM.INV(0.945,0,1)"

If we apply the z score formula to our case we have this:

P(X

So then based on the equalities we have this:

\frac{a-73}{7}=1.598

And if we solve for a we got:

a=(7*1.598) +73=84.186

So then we need a score of 84.186 rounded to the nearest whole number 75 or higher in order to get an A

8 0
3 years ago
Help I will give 30 points help me out need ASAP please
Oksana_A [137]

Answer:

21 in.

Step-by-step explanation:

The radius is half of the diameter. The diameter (as shown) is 42 inches. Divide that by two to get 21 in.

6 0
3 years ago
Can someone help me please and thank you :)
Citrus2011 [14]

Answer:

the answer is 4328

Step-by-step explanation:

may God bless you and your family during spring break

8 0
2 years ago
This table shows Jill's math quiz scores. What is the minimum score she needs on her next
Wewaii [24]
I think 90 im not sure tho i searched it up
6 0
3 years ago
Celine is making a special gelatin dessert for the Constellation Club meeting. She plans to fill
Elena L [17]

Answer:

Celine can fill 20 stars i believe

Step-by-step explanation:

(48-8)÷2=20

7 0
3 years ago
Other questions:
  • What is the value of x/4y when x=16 and y=2
    13·1 answer
  • CD is the perpendicular bisector of both XY and ST, and CY=20. Find SX.
    14·2 answers
  • Which equation has no solution
    12·2 answers
  • General admission to the State Fair of Texas is $16.00. For guests to ride the various rides, they must use coupons that cost $0
    7·1 answer
  • What is the surface area of a sphere with a radius of 6 units?
    14·2 answers
  • Subtract:<br> 31' 8" − 6' 11" = <br><br><br><br> Please Help!!!
    10·1 answer
  • Write this sentence as a conditional <br><br> "a regular hexagon has exactly 6 congruent sides."
    14·1 answer
  • A population of 7,890 tulips is being studied. A sample of 500 tulips is used, and 479 of them are a solid color. How many of th
    13·1 answer
  • What is the midline equation of y = 2 sin( pi/2 x+3)?​
    10·1 answer
  • For Halloween, Gwen received 4*10 pounds of candy in the first hour and another 43/5 pounds the second hour. How much
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!