Answer:
<u>Sum</u><u> </u><u>is</u><u> </u><u>2</u><u>0</u><u>,</u><u>9</u><u>3</u><u>5</u><u>.</u>
Step-by-step explanation:
This is an arithmetic progression.
Sum:
n is the number of terms, n = 79
S is the sum
a is the first term, a = -8
d is common difference, d = -1-(-8) = 7
substitute:
#1 is 25% 15/60= 4=0.25=25%
This is a right triangle, the measure of angle A is 90 degrees.
First thing to do I guess is finding B and C.
tan^-1 (7/12) = 30 degrees
tan^-1 (12/7) = 60 degrees
60 + 30 = 90
180 - 90 = 90. Therefore angle A = 90 degrees
Answer:
X < 12
Step-by-step explanation:
Is it a multiple choice question?