Math question: What is the sum of all even numbers from 55 to 200?

To find the sum of even numbers from 55 to 200, we first identify the first and last even numbers in this range. The first even number is 56, and the last is 200. We can now use the formula to find the sum of an arithmetic series: Sn = (n/2)[2a + (n-1)d] Where Sn is the sum, n is the number of terms, a is the first term, and d is the common difference. Here, the first term (a) is 56, the common difference (d) is 2 since we're dealing with even numbers, and the number of terms (n) can be found by (last term - first term)/d + 1, which is (200-56)/2 + 1 = 73. Plugging these values into the formula, we have: Sum = (73/2)[2(56) + (73-1)(2)] = 36.5[112 + 144] = 36.5 * 256 = 9344 Therefore, the sum of all even numbers from 55 to 200 is 9344.

Math Question: What is the sum of the first 10 multiples of 5 greater than 50?

To find the sum of the first 10 multiples of 5 greater than 50, we start by identifying the first multiple. Since 55 is the smallest multiple greater than 50, we add 5 consecutively to obtain the subsequent multiples: 60, 65, 70, 75, 80, 85, 90, 95, 100. Now, by adding these 10 numbers together, we get the sum. Sum = 55 + 60 + 65 + 70 + 75 + 80 + 85 + 90 + 95 + 100 = 755. Thus, the sum of the first 10 multiples of 5 greater than 50 is 755.

Math question: If 5x + 6y = 55 and x + y = 15, solve for x and y. Explanation: Let's solve this system of equations using the method of substitution. We have two equations: 5x + 6y = 55 and x + y = 15. Rearranging the second equation, we get x = 15 - y. Substituting this value of x into the first equation, we get 5(15 - y) + 6y = 55. Expanding the equation, we have 75 - 5y + 6y = 55. Simplifying further, we get y = 20. Now, substituting the value of y back into the second equation, we find x = 15 - 20 = -5. Therefore, the values of x and y that satisfy both equations are x = -5 and y = 20.

The solution to the system of equations 5x + 6y = 55 and x + y = 15 is x = -5 and y = 20.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

55 (number)

55 is an odd 2-digits composite number following 54 and preceding 56. In scientific notation, it is written as 5.5 × 10^1. The sum of its digits is 10. It has a total of 2 prime factors and 4 positive divisors. There are 40 positive integers (up to 55) that are relatively prime to 55.

Interesting facts

55 has 4 divisors, whose sum is 72
The reverse of 55 is 55
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 2
Sum of Digits 10
Digital Root 1

Name

Name	fifty-five

Notation

Scientific notation	5.5 × 10^1
Engineering notation	5.5 × 10^0

Prime Factorization of 55

Prime Factorization 11 × 5

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	55	Product of the distinct prime numbers

The prime factorization of 55 is 11 × 5. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 66, 67, 304, 898, 295, 1578, 3631, 98970, 3098, 784369, 6902749, 8638887, 15203754, 41525136, 238150366, 689611424, 5367701126, 9970878155

Basic calculations (n = 55)

Multiplication

n×y

n×2	110
n×3	165
n×4	220
n×5	275

Division

n÷y

n÷2	27.5
n÷3	18.333333333333
n÷3	13.75
n÷5	11

Exponentiation

n^y

n²	3025
n³	166375
n⁴	9150625
n⁵	503284375

Nth Root

^y√n

²√n	7.4161984870957
³√n	3.8029524607614
⁴√n	2.7232698153315
⁵√n	2.2288073840335

Divisors of 55

1, 5, 11, 55

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-54	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 55 can be divided by 4 positive divisors. The sum of these divisors (counting 55) is 1, the average is 0.25.

Base conversion 55

Base	System	Value
2	Binary	110111
3	Ternary	2001
4	Quaternary	313
5	Quinary	210
6	Senary	131
8	Octal	67
10	Decimal	55
12	Duodecimal	47
16	Hexadecimal	37
20	Vigesimal	2f
36	Base36	1j

Cryptographic Hash Functions

md5	b53b3a3d6ab90ce0268229151c9bde11
sha1	8effee409c625e1a2d8f5033631840e6ce1dcb64
sha256	02d20bbd7e394ad5999a4cebabac9619732c343a4cac99470c03e23ba2bdc2bc
sha512	4774b6224b8e98b96b658092bee32c88c41b1a8c80dcfd7e1fdffc7be59c5f72eae3aecac37b0c7398154489066b0b022240a68daf4432849fabe75768faaf5e
ripemd-160	e1589bc715772bc888f8a4e6feca11d4795333a4

55 as geometric shapes

Circle

Radius = n

Diameter	110
Circumference	345.57519189488
Area	9503.3177771091

Sphere

Radius = n

Volume	696909.97032134
Surface area	38013.271108437
Circumference	345.57519189488

Square

Length = n

Perimeter	220
Area	3025
Diagonal	77.78174593052

Cube

Length = n

Surface area	18150
Volume	166375
Space diagonal	95.262794416288

Equilateral Triangle

Length = n

Perimeter	165
Area	1309.863423224
Altitude	47.631397208144

Triangular Pyramid

Length = n

Surface area	1309.863423224
Volume	19607.481786652
Height	25.927248643507