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3 years ago

Whats the simple interest of $400 after 5 years at a 3% annual rate?

Mathematics

1 answer:

Nady [450]3 years ago

6 0

60 is the interest bro

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A freezer was sold during a clearance sale for $387.50. If the freezer was sold at a discount of 16 and two thirds % , what wa

Oliga [24]

The list price was $465 (465=387.5 / (5/6))according to the information on the question above. This problem can be solved using the percentage and fraction principle of the mathematics. In this problem, 16 and two-thirds % is equal to the one-sixth fraction, therefore, the current price is the 5/6 portion of the list price.

7 0

2 years ago

45 is 60% of what number

kobusy [5.1K]

Its 75% hope dis helps

3 0

2 years ago

Read 2 more answers

*Find the formula of the series 1+2²+3²+4²+....+n²*<br>

Sophie [7]

The formula is $\frac{n(n+1)(2n+1)}{6}$

What are series?

In mathematics, we can describe a series as adding infinitely many numbers or quantities to a given starting number or amount.

We will find the formula as shown as below:

Let $S=1+2^2+3^2+4^2+................+n^2$

We know $(n+1)^3=n^3+3n^2+3n+1$

$(1+1)^3=1^3+3(1)^2+3(1)+1$

$(2+1)^3=2^3+3(2)^2+3(2)+1$

$(3+1)^3=3^3+3(3)^2+3(3)+1$

$(n+1)^3=n^3+3(n)^2+3(n)+1$

On adding

$2^3+3^3+4^3......(n+1)^3=(1^3+2^3+3^3+.....+n^3)+3(1^2+2^2+.....+n^2)+3(1+2+3....n)+(1+1+1+....+1)$

$2^3+3^3+4^3......(n+1)^3-(1^3+2^3+3^3+.....+n^3)=3S+\frac{3n(n+1)}{2}+(1+1+1+....+1)$

$(n+1)^3-1^3=3S+\frac{3n(n+1)}{2} +n$

$n^3+3(n)^2+3(n)+1-1=3S+\frac{3n(n+1)}{2} +n$

$2n^3+6n^2+6n=6S+3n^2+3n+2n$

$6S=2n^3+3n^2+n$

$6S=2n^2(n+1)+n(n+1)$

$6S=(n+1)(2n^2+n)$

$6S=n(n+1)(2n+1)$

$S=\frac{n(n+1)(2n+1)}{6}$

Hence, the formula is $\frac{n(n+1)(2n+1)}{6}$

Learn more about Series here:

brainly.com/question/24643676

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3 0

1 year ago

Pete has 4 packs of gum balls. Each pack has 5 gum balls. If Pete gives the same number of gum balls to 6 friends, how many gum

Bezzdna [24]

Answer:

I would say 3

Step-by-step explanation:

8 0

3 years ago

Can somebody help I will mark brainlist if correct !! :) and show work pls

alekssr [168]

Answer:24

Step-by-step explanation:If you look at the multiples of 8 there are: 8,16,24,32,,40,and so on.If we look at the multiples of 6 there are:6,12,18,24,30 and so on.Now if we look at all the multiples the closest multiple is 24 so 24 would be our answer.

5 0

2 years ago