Answer:
x = 8
Step-by-step explanation:
Given
7 + (- 5x) = - 33
Note that + (- ) = -
7 - 5x = - 33 ( subtract 7 from both sides )
- 5x = - 40 ( divide both sides by - 5 )
x = 8
Translation of 2 units left, and a reflection across the x axis :)
A / b = -2
Take note:
to have a quotient with at negative sign, both a & b must have opposites signs. a can be a positive number while b is a negative number or vice versa. If both a and b have the same sign, its quotient will be a positive number.
Let us disregard the sign.
To arrive at the answer of 2, a must be twice the amount of b. meaning a = 2b.
For example: look for a if b is equal to 2. a = 2(2) ; a = 4.
a / b = 2
4 / 2 = 2
2 = 2
Now, we consider the sign of both numbers. a can be 4 while b can be -2 OR vice versa.
a / b = -2
4 / -2 = -2 or -4 / 2 = -2
Answer:
r = c / 2π
Step-by-step explanation:
c = 2πr is the formula for the circumference of a circle of radius r.
We can solve this for r:
r = c / (2pi)
or
r = c / 2π
To solve this problem you must apply the proccedure shown below:
1. You must apply the formula for calculate the surface area of a cone, which is:
Where is the radius () and is the slant height () and
2. You need to substitute these values into the formula:
Therefore, the answer is the last option: