Answer:

Step-by-step explanation:
we are given
the sum,common difference and nth term of a geometric sequence
we want to figure out the first term
recall geometric sequence

we are given that
thus substitute:

to figure out
we need to figure out the equation
simplify denominator:

simplify square:

simplify substraction:

simplify complex fraction:

calculate reciprocal:

reduce fraction:

multiply both sides by 4/7:

reduce fraction:

simplify multiplication:

hence,

The anser is the second box circle thing
Answer: 25%
Step-by-step explanation:
We know that 20 divided by 5 is 4, so 5 is one-fourth of 20 or 25%.
Answer:
8x+3y=-6
Step-by-step explanation:
Convert to slope-intercept form
8x+3y=-6
3y=-8x-6
y=-8/3x-2, The slope is the same, therefore the lines are parallel.