Answer:
(a, b, c) = (30°, 60°, 105°)
Step-by-step explanation:
Angle "a" and 30° are vertical angles, hence equal.
Angle "b" and angle "a" are complementary angles, so b = 90° -30° = 60°.
Angle "c" is supplementary to the one marked 75°, so is 180° -75° = 105°.
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Angles "a" and "b" are complementary because the sum of angles in a triangle is 180° and the third angle in that triangle is 90°. Then ...
a+b = 180°-90° = 90°
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75° and "c" are supplementary, because they are linear angles. The angle measure of a line is 180°, so that is their total measure.
Let the set of all Odd multiples of 9 between 2 and 82 be denoted by D, then, using set-builder notation,
The odd multiples of 9, 
, in the range 
form the set
Each member of the set is a term of the arithmetic progression
where the values of 
range from 0 to 4, or 
Putting these facts together, we get the result
Learn more about set-builder notation here: brainly.com/question/17238769
Answer:
it's D
Step-by-step explanation:
step 1 : add all the numbers
80 +100+20 +40
=240
step 2: divide the total by how many numbers there are
240÷4
=60
The order will weigh 2,435 pounds.
Can i see the picture of the locker room to answer?
