3 years ago

Thank to whoever answers this

Mathematics

2 answers:

blagie [28]3 years ago

8 0

I’m pretty sure the answer is A, i hope this helps!!

Xelga [282]3 years ago

3 0

Answer:

Hi! Do you need any help with anything?

Step-by-step explanation:

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Elza [17]

Answer:

The sum of the first 35 terms of the arithmetic sequence when a = 5 and d = 4 is 2555.

Step-by-step explanation:

Given:

a = 5

d = 4

To Find :

The sum of first 35 terms of the arithmetic sequence = ?

Solution:

Step 1 : finding the 35th term

$a_n = a_1 +(n-1)d$

$a_35 = 5 +(35-1)4$

$a_35 = 5 +(34)4$

$a_35 = 5 +136$

$a_35 = 141$

Step 2: Finding the sum of first 35 terms

$S_n = \frac{n(a_1 +a_n)}{2}$

Substituting the values

$S_n = \frac{35(5+141)}{2}$

$S_n = \frac{35(146)}{2}$

$S_n = \frac{5110)}{2}$

$S_n = 2555$

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4 years ago

The side lengths of a right triangle are 24 , 45 , and 51 . Determined which is the length of the hypotenuse

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