Answer:
All terms separated by 6 so #20 = 4 + 6 * 19 = 118
(if the first term were 6 instead of 4 the 20th would be 120)
Also, #10 = 58 and #11 = 64 (you can use the same reasoning)
The 1st and 20th term add to 4 + 118 = 122
The 2nd and 19th add to 10 + 112 = 122
Likewise 10th and 11th add to 58 + 64 = 122
So 10 * 122 = 1220
Answer:
What you want to do is solve for m in whichever equation it's easier to so in, then substitute that in to the other equation. For instance:
X=3m-4
Y=6-m
Solve the 2nd equation to get m=6-y
Plug that into the first equation to get x=3(6-y)-4
X=18-3y-4
X-14=-3y
14-x=3y
Y=(14-x)/3
<span>2(2x - 4) + x = 7
First of all, apply the distributive property for the parenthesis:
a(b - c) = ab - ac
So, = 4x - 8 + x = 7
Now, bring like terms together:
4x + x = 7 + 8
5x = 15
x = 15/5
x = 3
In short, Your Final Answer would be: 3
Hope this helps!</span>
<span> ϕ = (1+√5)/2 ≈ 1.618
10.4 * ϕ ≈ 16.8
10.4 / ϕ ≈ 6.4
Answer: b </span>
You plug in x + 8 for y in the second equation.
answer: x + x + 8 = 2