Answer:
Picture 1: b
Picture 2: d
Picture 3: c
Step-by-step explanation:
Hi there,
For Picture 1, to solve for an inverse function, just simply solve for x. Since the closest you can get is arccos(πx)=2y+6, you just
solve for cosine as a function: cos(2y+6)=πx and solving for x:
x= (1/π)cos(2y+6) but since variable choice is arbitrary, you can now redefine y and x:
y= (1/π)cos(2x+6)
For Picture 2, tanx is equivalent to sinx/cosx and cscx is just the reciprocal of sinx. So, it becomes:
We have already been giving the cosine value of 2, and its inverse is thus 1/2.
For Picture 3, I would recommend revisiting polar coordinates.
Polar coordinates are in the form (r, θ).
and θ . Recognize there are two possible radii, depending on what side of the circle you start from!
thanks,
Step-by-step answer:
Since the question can be solved easily with a calculator, it is assumed that no calculators are allowed.
13*379 is the same as (10+3)*379
Applying distributive law, we then solve
10*379 = 3790
3*379 = 1137
Adding the two, we get
4927
Alternatively, we can calculate the product by long multiplication to get also 4927.
To check for mistakes, we use casting out nines
13 * 379 (add the digits, 1+3, 3+7+9)
4 * 19 (add the digits)
4*10 (multiply)
40 (add digits)
4
Add digits of 4927
4+9+2+7 = 22
add digits again
2+2 =4
the two match, so the likelihood of make arithmetic error is very low.
Note: using a calculator, the value is indeed 4927.
She will be able to fill 10 cups with kool-aid because 5 ÷ 1/2 = 10
Answer:
It swaps directions and is now negative. It also has a verticle stretch.
Step-by-step explanation:
Answer:
a)
b)
c)
Step-by-step explanation:
For this case we know that the mean for the random variable of interest is and the variance so then the deviation would be
The z score is given by thsi formula:
Part a
We want this probability:
And if we find the z score we got:
And we can find this probability:
Part b
We want this probability:
And if we find the z score we got:
And we can find this probability:
Part c
We want this probability:
And if we find the z score we got:
And we can find this probability: