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2 years ago

2. Faith opens a credit card with an APR of 16.50% compounded monthly. How much is charged in interest this month if her

Mathematics

1 answer:

FromTheMoon [43]2 years ago

8 0

Answer:

14.44 (Letter D)

Step-by-step explanation:

The answer is 14.44

Hopefully its correct!!!

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Another question I need help with!!

Greeley [361]

Answer:

The answer would be the first one

Step-by-step explanation:

tell me if im wrong

7 0

3 years ago

* Some amount of billiard balls were arranged in an equilateral triangle. And 5 balls were extra. When the same set of billiard

Agata [3.3K]

Lets say billiard balls are arranged in rows to form an equilateral triangle, then the first row consists of 1 ball, second row consists of 2 balls, and third row consists of 3 balls, and so on. So there must be $n$ balls in the $n^{th}$ row.

So, the total number of balls that forms the equilateral triangle with $n$ rows is:

$1+2+3+4+5+....+n=\frac{n(n+1)}{2}$

Let $x_1$ and $x_2$ be the total number of balls in the first and second arrangements respectively.

Then,

$x_1=\frac{n(n+1)}{2} +5$

It has been said that there were 11 lesser balls in the second arrangement:

$x_2=\frac{1+(n+1)}{2} \times (n+1)-11=(n+1) \times \frac{(n+2)}{2} -11$

Since, $x_1=x_2$

$\frac{(n+1)}{2} \times n+5=\frac{(n+2)}{2} \times(n+1)-11$

multiplying both the sides by 2

$(n+1)\times n+10=(n+2)(n+1)-22$

$n+n^2=n^2+n+2n+2-22-10$

$2n=22+10-2$

$2n=30$

$n=15$

Therefore,

$x_1=\frac{(n+1)}{2}\times n+5=\frac{15+1}{2} \times 15+5=125$

So, there were 125 balls at the set.

4 0

3 years ago

Read 2 more answers

What is the distance between -11 and 1 on the number line? *

Sloan [31]

Answer:

Step-by-step explanation:

4 0

3 years ago

Starting from the same place, Karina walks due west and Lucas walks due east

Anna35 [415]

Answer:

480 ft

Step-by-step explanation:

First, every | on the line worth 40: the number of | from 0 to 400/-400 is 10 so -400/400÷10=-40/40. Also, if you go right from 0 it's positive (40) and if you go left to 0 it's negative (-40).

Karina is at - 240 because - 40*6=-240 ang Lucas is at 240 because 40*6=240.

Karina is 240 feet apart from 0 and so does Lucas, so they are 480 feet apart because 240+240=480.

4 0

4 years ago

Is 1/2 and 13/20 equivalent ratios??

dolphi86 [110]

No, they are not. !0/20 would be equivalent to 1/2

3 0

4 years ago

Read 2 more answers