Answer:
Step-by-step explanation:
Sn = a1 * (r^n - 1) / (r-1)
a3 = a1r^2 = 4, and
a1 = 16 , so:
r^2 = 4/16 = 0.25
r = 0.5
S6 = 16 * (0.5^6 - 1) / (-0.5)
= 16 * 1.96875
= 31.5.
Answer:
i dont know what this means
Step-by-step explanation:
please explain in a further and better format to underline the question son.
Solve the first equation for y
Substitute the given value of y into the equation -5x-y=21
When there is a - in front of an expression in parentheses, change the sign of each term in the expression
Collect like terms
Move the constant to the right-hand side and change its sign
Add the numbers
Divide both sides of equation by -3
Substitute the given value of x into the equation y=4x+6
Multiply the numbers
Calculate the difference
The possible solution of the system is the ordered pair (x,y)
Answer:
Y-intercept is -8 and slope is positive 6. The line is a solid and is shaded down.
Step-by-step explanation:
Hope this helps. Pls give brainliest.