Answer: 15
Step-by-step explanation:
We know that sin 75 degrees = 0.90659...
Now, to find cos: cos-1 (0.90659) = 15
So the answer is 15.
Answer:
y=4x+3 The slope is 4 and the y-intercept is 3
Step-by-step explanation:
Answer:
6.3 days
Step-by-step explanation:
The decay formula is
N(t) = N₀ exp(-kt)
where
N₀ = 45 g, original mass
N(t) = mass after time t, days
k = 0.1109, the decay constant.
At half life, N(t) = (1/2)*N₀. Therefore
1/2 = exp(-0.1109t)
Take natural log of each side.
ln(0.5) = -0.1109t
t = ln(0.5)/(-0.1109) = 6.25 days
Answer: 6.3 days (nearest tenth)
Answer:
2/3 or 0.6666(repeated)
Step-by-step explanation:
Log_6_36= 2 (basically asking what power of 6 will give us 36 and we know 6*6 = 36 so power of 2)
Log_ 6_ 216= 3 (same thing just this time 6*6*6=216 so power of 3)
so answer is 2/3
Answer: I believe his earnings would be 187$ once he teaches 7 classes.
Step-by-step explanation:
$187-$68=$111
17 x ? = 119
(take the 17$ which is the amount of money he'll earn each class and divide by 111. as seen below:
$111/17$=$6.5 (round to $7)
(you then plug in the 17 for 7 x ? = 119)
7x17=119
now you have to add the 68$ that he will get per month.
119+68=187
then you get 187$ which he had spent on the certificate