Answer:
a) 5/9
b) 7
c) 5
Step-by-step explanation:
For a)
One of the rules for logs is that if there is a logarithm subtracted by a logarithm and they have the same base, it is the same as the log with the same base and the arguments are divided:
=
so for this problem, they have the same base, so you can use this rule:
For b)
This is very similar, except instead of dividing the arguments, you want to multiply them.
So this is kind of saying "8 multiplied by x equals 56"
which is 7
For c)
If the argument has its own exponent, it can be brought to the front of the log like so:
This one is a bit tricky because you have to actually set 32 into an exponent form first.
Then we can bring that 5 in front of the logarithm
So the answer is 5
Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using
Where n=60 is the sample size and is the population standard deviation.
The critical value corresponding to 95% confidence interval is
We substitute the values to obtain;
1.)
2.)
<em>Hope it helps and is useful :)</em>
y = mx + b
slope(m) = -4/5
(10,5)...x = 10 and y = 5
now sub into the formula and find b, the y int
5 = -4/5(10) + b
5 = -40/5 + b
5 = -8 + b
5 + 8 = b
13 = b
so ur perpendicular equation is : y = -4/5x + 13 <===
Hope this helps!