Answer:
The total sales during the promotion is $69.6
Step-by-step explanation:
we are given
The average daily sales at a bookstore was(7.6k + 2.2) dollars over a 4-day promotion
we have to find total sales during 4 days
so, we can integrate it to find total sales
now, we can solve it
now, we can plug bounds
and we get
So,
the total sales during the promotion is $69.6
Answer:
the answer is b
Step-by-step explanation:
radius is half the number of diameter
From what I understand, we need to find x, y, and z.
We can easily find x by knowing a triangle has 180°.
Add 72+86=158 and then subtract 180-158 which gets you 22.
Now we have x=22°.
To find y, we first must find z. We can find z using the vertical angles theorem. This means x and z and the same, so z=22°.
Now, we can now find y by adding 70 and 22 = 92.
Subtract 180-92=88°.
All values have been found!
x=22°
y=88°
z=22°
Answer:
x=-20
Step-by-step explanation:
3x=-56-4
3x=-60
x=-20
If sinα=cosß it means that ß=90-α. This also means that α+ß=90 so we can say:
4k-22+6k-13=90
10k-35=90
10k=125
k=12.5°
...
The above identity comes up a lot, and is one worth committing to memory for sure.
sinα=cos(90-α) or vice versa cosα=sin(90-α)
