Consider the universal set r, r, define the interval a=[−7,1],a=[−7,1], interval b=(−1,5),b=(−1,5), and cc be the negative real numbers. complete the following exercises in interval notation.
1. a∪b=a∪b=
2. a∩b∩c=a∩b∩c=
3. a∩(b∪c)=a∩(b∪c)=
4. a^c ∪ b^c∪ c^c=
5. (c−a)∪(b−c)=(c−a)∪(b−c)=

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a.m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?