What value of x makes the equation true? 15(2x−10)+4x=−3(15x+4)

A
−25
B
−115
C
−2
D
−559

x = 1.74

Step-by-step explanation:

It is required to find the value of x in the following equation :

Firstly, it is required to solve brackets such that,

Collecting variable on one side and constants on another side.

Dividing both sides by 79 such that,

So, the value of x = 1.74.

answer: the answer is 35%

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for