All categories

3 years ago

Which equation is the equation of a circle with a diameter of 20 cm and center at (-3, 6)?

1 answer:

5 0

The equation of a circle with centre (a,b) and radius r is:
(x - a)^2 + (y - b)^2 = r^2
thus,
here centre (a,b) = (-3,6), a = -3, b = 6
and radius = diameter/2 = 20/2 =10 units
therefore, the equation is
(x + 3)^2 + (y - 6)^2 = 100
which is c.

You might be interested in

Which function is a horizontal compression of its parent function f(x)= x^2 by a factor of 4

miskamm [114]

Answer:

3rd Option I think-

Step-by-step explanation:

5 0

3 years ago

Karana's mom bought her two items using a credit card. The first item cost $258, and the second item cost $372. Later, she retur

Lelu [443]

Answer:

View explanation.

Step-by-step explanation:

The question isn't clear on whether or not you are asking if the mom or if the store is owing money to the credit card company. The store owes the full amount paid. The mom owes nothing. You can look at the images for a more detailed explanation, but it is not really needed.

Images from https://www.creditcardinsider.com/blog/happens-credit-card-bill-make-return/

7 0

3 years ago

you answer 95% of the quedtions coretly on a 40-question test.How many questios do you answer incorrectly?

bogdanovich [222]

38.

38/40=.95 so 2answers incorrect is the answer

4 0

3 years ago

Read 2 more answers

There are two approaches to solving the equation -3x + 10 = 4x - 20

pashok25 [27]

Answer:

X =30/7

Step-by-step explanation:

The first way would be something like:

-7x + 10 = -20. The first thing we would do is to subtract 10 from both sides.

Therefore,

-7x+10-10=-20-10

Simplified, we get

-7x=-30

Remove the negative symbols

7x =30

x=30/7

Second example:

10=7x - 20

Add 20 to both sides.

10+20=7x-20+20

Simplified,

30=7x

x = 30/7

4 0

3 years ago

Read 2 more answers

Is 19.1 the same as 191

laiz [17]

Answer:

Step-by-step explanation:

6 0

3 years ago