Roseanna did not pay last month's credit card bill in full. Her daily balances for her last billing cycle are listed. What was Roseanna's average daily balance to the nearest cent? (Hint: Find the average or mean of these numbers.)For seven days she owed $456.11

For three days, she owed $1,077.00

For six days, she owed $900.08

For nine days, she owed $2,113.15

For five days, she owed $2,310.15

Answers

Answer 1
Answer: Average daily balance = (456.11 + 1,077.00 + 900.08 + 2,113.15 + 2,310.15)/(7 + 3 + 6 + 9 + 5) = 6,856.49/30 = 228.55

Therefore, Roseanna's average daily balance = $228.55
Answer 2
Answer:

Answer:

$228.54

Step-by-step explanation:

Given : Roseanna did not pay last month's credit card bill in full. Her daily balances for her last billing cycle are listed.

To Find: What was Roseanna's average daily balance to the nearest cent?

Solution:

For seven days she owed $456.11

For three days, she owed $1,077.00

For six days, she owed $900.08

For nine days, she owed $2,113.15

For five days, she owed $2,310.15

Mean = \frac{\text{Sum of amount owned}}{\text{Total no. of days}}

Mean = (456.11+1077+900.08+2113.15+2310.15)/(7+3+6+9+5)

Mean = (6856.49)/(30)

Mean = 228.5496

Hence Roseanna's average daily balance to the nearest cent is $228.54


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Find the area of a rectangle measuring 25 feet long by 8 feet wide.

Answers

A rectangle is a two-dimensional shape where the length and width are different.

The area of a rectangle is given as:

Area = Length x width

The area of the rectangle is 200 square feet.

What is a rectangle?

A rectangle is a two-dimensional shape where the length and width are different.

The area of a rectangle is given as:

Area = Length x width

We have,

Length of the rectangle = 25 feet

Width = 8 feet

The area of the rectangle.

= length x width

= 25 x 8

= 200 square feet

Thus,

The area of the rectangle is 200 square feet.

Learn more about rectangles here:

brainly.com/question/15019502

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Hi there! Area=L*W. Where 25 feet is the length and 8 feet is the width. 25 feet*8 feet=200 feet. Therefore, your answer is 200 feet.

Solve the system of linear equations below.6x + 3y = 33
4x + y = 15

x = 2, y = 7

x = -13, y = 7

x = - 2

3 , y = 12 2

3

x = 5, y = 1

Answers

Asking the Math Gods...

y=7 
x=2


Prove the identity
cos(A+B+C)=cosAcosBcosC-cosAsinBsinC-sinAcosBcosC-sinAsinBcosC

Answers

Hello !

cos (a+b) = cos a cos b - sin a sin b
sin (a+b) = sin a cos b + sin b cos a

cos (a+b+c) = cos (a+(b+c))
cos (a+b+c) = cos a cos (b+c) - sin a sin (b+c)
cos (a+b+c) = cos a (cos b cos c - sin b sin c) - sin a (sin b cos c + sin c cos b)
cos (a+b+c)=cos a cos b cos c - cos a sin b sin c - sin a sin b cos c - sin a cos b sin c

Olympus Mons's peak rises 25 km above the surface of the planet Mars. The diameter of Mars is approximately 6794 km. What is the distance from the peak of Olympus Mons to the horizon to the nearest kilometer?

Answers

Answer:

1.17*10^14 km

Step-by-step explanation:

kindly find attached the image for your reference

Step one:

The diameter of Mars is approximately 6794 km

hence the radius is = 6794/2= 3397km

Step two:

Use the Pythagorean Theorem

x^2 + 3397^2 = (3397 + 25)^2\n\n

x^2 + 11539609 = (11710084)^2\n\nx^2 + 11539609 = (11710084)^2\n\nx^2=  (11710084)^2-11539609 \n\nx^2= 1.37*10^14-11539609 \n\nx^2=1.37*10^14\n\nx= √1.37*10^14\n\nx=1.17*10^14 km

A rectangle has length (x-3) cm and width 4 cm. The perimeter of the rectangle is 40 cm. Find the length.

Answers

we actually don't need to solve for x, just legnth

P=2(L+W)
40=P
L=x-3=L (since we are solving for Legnth not specifically x)
W=4

40=2(L+4)
divide both sides by 2
20=L+4
minus 4 both sides
16=L

legnth=16 cm (x=19 just fyi)
2(x-3)+2(4)=40
2x-6+8=40
2x+2=40
2x=38
x=19
Length=(x-3)=(19-3)=16 cm


Which expression is equivalent to 36 + 81?9(27 + 72)
9(27 + 81)
9(4 + 81)
9(4 + 9)

Answers

The equivalent expression to 36 + 81 is 9(4 + 9).

Answer:

The answer is 9(4+9)

Step-by-step explanation: