Hey there!!
Closely observe the triangle, the triangle given is a isosceles triangle , hence, the angles on the base would be equal and hence, angle R = 3x + 30
The sum of all angles in a triangle = 180
Hence , angle R + angle S + angle T = 180
... 3x + 30 + 12x - 15 + 3x + 30 = 180
... 18x + 45 = 180
... 18x = 180 - 45
... 18x = 135
... x = 135 / 18
... x = 7.5
Now substitute the value of x in the angle formula of R and we get the angle R.
... 3x + 30
... 3 ( 7.5 ) + 30
... 22.5 + 30
... 52.5° is the answer
Hope my answer helps!
Answer:
The mapping is very disorganized and jumbled.
Answer
A.
Step-by-step explanation:
Rita's ratio of peaches to pears = 60/93 = 0.6451
(divide the numerator by the denominator)
Philip's ratio of peaches to pears = 62/95 = 0.6526
Rita sold a lower ratio of peaches to pears.
The amount of balls in a given layer can be found by squaring the layer it is in
4 layers
top layer (1st) is 1
2nd is 4
3rd layer is 9
4th is 16
add them up
1+4+9+16=30
30 in that pyramid