2x - 3y = -12 ⇒ 2x - 3y = -12⇒ 2x - 3y = -12
x + y = 1 ⇒ 2(x + y) = <u>1⇒ 2x + 2y = 1</u>
y = -11
2x - 3y = -12
2x - 3(-11) = -12
2x + 33 = -12
<u> - 33 - 33</u>
2x = -45
<u> 2x</u> = <u>-45</u>
2 2
x = -22.5
(x, y) = (-22.5 , -11)
The distance traveled by the balloon in every minute makes an arithmetic sequence with a first term equal to 40 ft and common difference equal to 20. The nth term of an arithmetic sequence is calculated by,
an = a1 + (n - 1) x d
Substituting,
an = 40 + (15 - 1) x 20 = 320
Thus, the answer is letter B. 320 feet.
Answer:
ok
Step-by-step explanation:
Answer:
-5/9
Step-by-step explanation:
−4/5 divided by 12
/5
=-20/36
simplify
=-5/9