To find the mean, you add up all the numbers and divide by the number of numbers in the sequence
28+42+56+70+84+98+112
=490 divide by 7
=70
This is the solution of the equation, where a=1, b=-5, c=7
So the discriminant is :
b^2-4ac=25-4*7= -3
The square root of -3 is non-real, this both solutions are non-real.
Answer:
y = 1
Step-by-step explanation:
-2y + 4 = 8y - 6
<em>First, add 2y to both sides to cancel out the letter variable.</em>
<em />
4 = 10y - 6
<em>Second, add 6 to both sides to cancel out the number variable.</em>
<em />
10 = 10y
<em>Finally, divide both sides by 10</em>
<em />
y = 1
<em>Tip: Be sure to always keep the letter on the left side of the answer.</em>
Answer:
See the pictures attached
Step-by-step explanation:
