A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third through seventh numbers are the sum of the previous two numbers in the sequence, and the seventh number is 0. What is the sum of the 7 numbers?

A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third through seventh numbers are the sum of the previous two numbers in the sequence, and the seventh number is 0. What is the sum of the 7 numbers?

number 1 of 7: 8

number 2 of 7: ? can be positive (+) or negative (-)

i think the second number is -3

number 3 of 7: the sum of the first two numbers (8+?)

if the second number is -3 then the 3rd number in the sequence is 5

number 4 of 7: 3

number 5 of 7: 2

number 6 of 7: 1

number 7 of 7: 0

sum of all 7 numbers: 8

btw please dont take my word for it this is probably wrong i think my thinking was right but i made a mistake somewhere. there wasnt enough data for me to wrap my mind around. i hope you find the answer soon.

x-3y=4

step-by-step e

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.