Answer:
The measures of the angles are 65° and 80°
Step-by-step explanation:
One of the angles is 35°
We know that the other two angles have a difference of 15°
With this knowledge we can write an equation.
2x symbolizes the two angles
+15 symbolizes the difference between the two angles
145 = 2x + 15
145 - 15 = 130
2x = 130
x = 65
65 is the size of one of the angles.
Next, we add 15 to 65 and we get 80
80 is our second angle
Ts option A
cos C = (b - x) / a
a cos C = b - x
x = b - a cosC
Answer:
It's B.) 1518
using fraction calculator**
As a positive improper fraction (numerator > denominator):
18/15 = 6/5
As a mixed number
(a whole number and a proper fraction, of the same sign):
18/15 = 1 1/5
As a decimal number:
18/15 = 1.2
As a percentage:
18/15 = 120%
Step-by-step explanation:
The room is a square, meaning all four sides are 20ft long.
Because we know all the side lengths, we can find the perimeter of the square by adding the side lengths together.
(20 + 20 + 20 + 20) = 80
Now that we know the perimeter, we have to match this number to the feet of crepe paper.
We can find this by dividing the total length needed by the length a single roll provides.
80 / 8 = 10
Therefore, we know that Katie will have to buy a minimum of 10 rolls if she wants to cover the entire perimeter of the room.
Hope this helps! :)
Answer: x<−28
Step-by-step explanation:
