Using technology, we do
https://www.desmos.com/calculator
graph
y=3^(x-7)
y=2log(2x)
see where they intersect
we get at x=7.79
nearest tenth is 7.8
Help you with what ? i don’t see anything .
Answer:
198 and 612
Step-by-step explanation:
We are given that the scores are normally distributed.
The mean of the data is 405.
The standard deviation of this data is 69.
Empirical rule states that for a normally distributed data that
- about 68% data lies between that is one standard deviation from mean.
- about 95% data lies between that is one standard deviation from mean.
- about 99.7% data lies between that is one standard deviation from mean.
Thus, 99.7% of data will lie between that is it will lie in the range (198,612)
Answer: BC = 5.83
Step-by-step explanation:
Luckily, the triangle is placed on the graph nicely so we can count the legs of the triangle:
AB = 5
AC = 3
BC = ?
To find BC, we can simply use the Pythagorean Theorem:
5^2 + 3^2 = c^2
25 + 9 = c^2
34 = c^2
Now square root to find c, or BC.
c = 5.83 (rounded by nearest hundredth)