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2 years ago

HELP ASAP!!! HELP FAST PLEEASE!!!

Mathematics

1 answer:

expeople1 [14]2 years ago

8 0

Answer:

Step-by-step explanation:

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What is the sum of the arithmetic series

docker41 [41]

Answer:

$S_ {12} = 192$

Step-by-step explanation:

The nth term of the given arithmetic sequence is

$U_n = 3 + 2n$

The first term of this series is:

$U_1 = 3 + 2(1) = 5$

The last term of this series is when

$n = 12$

$U_ {12}= 3 + 2(12)$

$U_ {12}= 3 + 24 = 27$

The sum of the first n terms of an arithmetic series when the first an last term is known is given by:

$S_n = \frac{n}{2}(a + l)$

Where a=5 is the first term and l=27 is the last term.

$S_ {12} = \frac{12}{2}(5 + 27)$

$S_ {12} =6(32) =19 2$

6 0

3 years ago

What value could be added to 2/15 to make the sum greater than 1/2

DENIUS [597]

6/15 . as 2/15 plus 6/15 is 8/15, which is greater than 1/2

7 0

3 years ago

Read 2 more answers

I need help to solve this multi step equation please give me the correct answer

kozerog [31]

Answer:

291 - 5y

Step-by-step explanation:

x- a measure of the fourth angle

The equation

$x+60+(2y+8)+(3y+1)=360\qquad|\text{combine like terms}\\\\x+(2y+3y)+(60+8+1)=360\\\\x+5y+69=360\qquad|\text{subtract 5y and 69 from both sides}\\\\x=291-5y$

6 0

3 years ago

Absolute value of 5=|3×-2|

irina [24]

So, x=7/3, -1.
5=3x-2
x=7/3
Here change 5 to -5.
5= 3x-2
x=-1

3 0

3 years ago

Read 2 more answers

Which of the following expressions represents the least common multiple of 15, 18, and 25?

Virty [35]

Answer:

$(2)(3^2)(5^2)$

Step-by-step explanation:

we know that

The <u>Least Common Multiple</u> (LCM) of a group of numbers is the smallest number that is a multiple of all the numbers.

we have

15,18 and 25

Decompose the numbers in prime factors

$15=(3)(5)$

$18=(2)(3^2)$

$25=(5^2)$

Multiply common and uncommon numbers with their greatest exponent

The LCM is equal to

$LCM=(2)(3^2)(5^2)$

$LCM=450$

7 0

3 years ago