(PLEASE HELP) What is the area of a circle with a radius of 8 units

Mathematics

2 answers:

ladessa [460]4 years ago

8 0

Answer:

A = 64π units = about 201.06 units

Step-by-step explanation:

The formula for area is

A = πr^2, where r=radius.

Plug in our radius to get the area!

A = π8^2

<u>A = 64π = about 201.06 units</u>

drek231 [11]4 years ago

5 0

Area = 201.06 if radius = 8

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Two families went to a baseball game. The first family bought 5 pretzels and 4 sodas, which totaled $30. The second family bough

Alinara [238K]

The cost of one soda bought by both families is $5.

<h3>What is the total cost of shopping for each family?</h3>

The cost of purchase is the sum of number of items bought and their prices for each family.

Let us assume that x is for number of pretzels bought and y is for number of sodas bought, as a result, the total amount spent by each family and number of items bought are expressed thus:

5x+4y=30.....................(equation 1)

4x+5x=33 .....................(equation 2)

let us multiply equation 1 by 5

let us multiply equation 2 by 4

5*(5x+4y=30)25x+20x=150........(equation 3)

4*(4x+5x=33)16x+20x=132..........(equation 4)

equation 3 minus equation 4 is:

9x=18

x=18/9

x=2

price of pretzels is $2.00

Substitute for x in equation:

24x+5y=33(4*2)+5y=33

8+5y=33

5y=33-8

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y=25/5

y=5

price of one soda=$5

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2 years ago

Explain why the function is discontinuous at the given number a (select all that apply)

N76 [4]

Answer:

b) f(3) is defined, but is not equal to the limit

Step-by-step explanation:

The portion of the function defined by the rational expression is equivalent to x/(x+3), which has a value of 1/2 at x=3. This is the limit of f(x) from the left or right as x approaches 3. However, the function is not defined at that point as 1/2. Rather, it is defined to be f(3)=1.

So, the limits at f(3) exist and are 1/2, but the function is defined as a different value there.

The only applicable statement is the second one.