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Aleksandr [31]
3 years ago
8

What are the first five terms of n squared minus 1?

Mathematics
1 answer:
Bezzdna [24]3 years ago
4 0

a_n=n^2-1\\\\\text{substitute 1, 2, 3, 4, 5}\\\\a_1=1^2-1=1-1=0\\\\a_2=2^2-1=4-1=3\\\\a_3=3^2-1=9-1=8\\\\a_4=4^2-1=16-1=15\\\\a_5=5^2-1=25-1=24\\\\Answer:\ 0,\ 3,\ 8,\ 15,\ 24

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How much simple interest does $4,678.00 earn in 529 days at a rate of 7.3%? Round to the nearest cent.
statuscvo [17]

Answer:

$5,172.93

Step-by-step explanation:

We're gonna use the simple interest formula: P = A(1 + r(t))

P = final amount

A = starting amount (4,678)

r = rate (0.073)

t = years (529/365)

P = 4,678(1 + 0.073(529/365))

P = 5,172.9324

7 0
2 years ago
The base and height of a parallelogram are in the ratio of 6:5. It's area is 480 inches squared. Find the height of the parallel
lara [203]

Answer:

The height of the parallelogram is 20m

Step-by-step explanation:

Given the area of a parallelogram

A = bh where;

b is the base and h is the height

If the base and height of a parallelogram are in the ratio of 6:5. It's area is 480 inches, this means that b/h = 6/5

5b = 6h

b = 6h/5

Substituting equation 1 into the volume if the parallelogram we have;

A = 6h/5×h

480 = 6h²/5

6h² = 480×5

6h² = 2400

h² = 2400/6

h² = 400

h = √400

h = 20m

3 0
3 years ago
State true or false. (i) Cube of any odd number is even. F (ii) A perfect cube does not end with two zeros.T (iii) If square of
lilavasa [31]

i. Cube of any odd number is even. False

ii.  A perfect cube does not end with two zeros. True

iii.  If square of a number ends with 5, then its cube ends with 25. False

iv. There is no perfect cube which ends with 8. False

v. The cube of a two digit number may be a three digit number. False

vi.  The cube of a two digit number may have seven or more digits. False

vii. The cube of a single digit number may be a single digit number. True

<h3>Reasons </h3>

i.  Cube of any odd number is even. This statement is false because the cube of odd numbers are also odd

ii.  A perfect cube does not end with two zeros. This statement is True because the cube of a two digit number cannot be a 3 digit number and therefore cannot end with two zeros.

iii.  If square of a number ends with 5, then its cube ends with 25. This statement is False

Using the illustration

35^2 = 35 x 35= 1225 , its square ends with 5

35^3= 35 x 35 x 35= 42875 which ends with 75

iv.  There is no perfect cube which ends with 8. This statement is False.

Using the illustration, the cube of 2 is given thus

2 * 2 * 2 = 8

The cube of 2 ends with 8

v. The cube of a two digit number may be a three digit number. This statement is False.

Using the illustration, 10 is a two digit number

10 * 10 * 10 = 1000

The cube of 10 which is a two digit number is not a three digit number and same applies to all two digit numbers

vi  The cube of a two digit number may have seven or more digits. This statement is False because the cube of a two digit number can only be a four digit number.

vii. The cube of a single digit number may be a single digit number. This statement is True because the cube of a single digit number can be a single, two or three digit number.

Learn more about cube numbers here:

https://brainly.in/question/6133463

#SPJ1

6 0
2 years ago
Pls answerI need help
VikaD [51]
The difference in individual rate: $11.95
The difference in unit rate is: $0.50 per a truck.

Any questions?

8 0
3 years ago
Let “a” represent Andrew’s age TODAY. Write an expression to represent the situation. Five years less than four times Andrew’s a
EleoNora [17]

Answer:

y = 4a - 5

Step-by-step explanation:

Let y represent the given situation.

Given:

Andrew's age = a

We need to find the expression for given abatement.

Solution:

The given statement: Five years less than four times Andrew’s age

Five years less than four times Andrew’s age = 4\times (Andrew's\ age) - 5

Andrew's age is known, so we substitute Andrew's age = a

y = 4\times (a) - 5

y = 4a - 5

Therefore, the expression for the given situation y = 4a - 5

6 0
3 years ago
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