3x - 4y = 12 ----- (1)
x + 4y = 20 ------ (2)
equation (2) x 3:
3x + 12y = 60 ---(2a)
(2a) - (1):
12y - (-4y) = 60 - 12
12y + 4y = 48
16y = 48
y = 3 ---- sub into equation (2)
x + 4(3) = 20
x + 12 = 20
x = 8
Ans: x = 8 and y = 3 (True)
Answer:
1,207.6 m
Step-by-step explanation:
Combine the two semicircles on both sides.
Circumference is pi times diameter.
Circumference is 3.14 times 35 which is 109.9
Add 96 two times to that to get 301.9, one lap around the track.
Multiply by 4, 4 laps, to get 1207.6
You're welcome
Step-by-step explanation:
The root is
-sqr root of 5.
First, we put these roots in the forn of
where a is the root
So we have
To get rid of that square root, let have another root that js the conjugate posive root of 5.
Which will gives us a rational coeffeicent of degree 4.
Why we didn't do
?
Because
If we foiled out we will still have a irrational coeffceint.
Answer: The prime factorization of 1001 is 7*11*13, so with the constraint that the tables seat between 2 and 19 guests, we can use tables that seat either 7, 11, or 13 guests.
For tables that seat 7, the caterer would need 11*13 = 143 tables.
For tables that seat 11, the caterer would need 7*13 = 91 tables.
For tables that seat 13, the caterer would need 7*11 = 77 tables
Step-by-step explanation:
hopefully this is right
6(y+x)=6y+6x
Hope this help! :)