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2 years ago

Find the circumference of a circle whose area is /. A. B. C. D. Please select the best answer from the choices provided A B C D

Mathematics

1 answer:

Furkat [3]2 years ago

7 0

Answer:

Circumference of circle = (15.5)π cm

Step-by-step explanation:

Missing information:

Area of circle = 60π cm²

Find:

Circumference of circle

Computation:

Area of circle = πr²

Area of given circle = π(Radius of circle)²

60π = πr²

60 = r²

Radius of circle = 7.75 cm (Approx)

Circumference of circle = 2πr

Circumference of circle = 2(π)(7.75)

Circumference of circle = (15.5)π cm

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Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 20. Find the prob

Ipatiy [6.2K]

Answer:

Randomly selected adult has an IQ less than 136 is 0.9641

Step-by-step explanation:

It is given that, it is normal distribution with mean 100 and SD as 20.

So, let's use the formula of z-score

z= $\frac{x-mean}{SD}$

For this problem,

x= 136

Plug in this value into the formula

z-score= $\frac{136-100}{20}$

=1.8

Now, use z-score table to find the probability

Find the corresponding value for the row 1.8 and the column 0.00, we do get 0.9641

So, Randomly selected adult has an IQ less than 136 is 0.9641

3 0

3 years ago

Find the distance between the points (-3,-2) and (1,-5)

Vsevolod [243]

The slope or distance is 4/-3

7 0

2 years ago

Can you help me <br> 3(x+2)=2(x+5)

anzhelika [568]

Answer: x = 4

Step-by-step explanation:

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

3x + 6 = 2x + 10

x + 6 = 10

x = 4

7 0

2 years ago

Read 2 more answers

Tickets for an Amtrak train cost $22 for children and $48 for adults. Josie paid $3,278 for a total of 84 tickets. How many chil

timama [110]

Answer:

29 child 55 adult

Step-by-step explanation:

x+y=84

22x+48y=3278

x=29,y=55

hope it will help, if not, sry, u can comment below to ask me!

5 0

2 years ago

Which distributive property gives the same answer as 7(99)?

Makovka662 [10]

Answer:

7(100-1)

Step-by-step explanation:

That's it right there

6 0

2 years ago