Can someone explain to me how to do these, I dont get it.

A hair stylist worked from 8:45 A. M. until 12:15 P. M. and 12:45 P. M. until 5:15 P. M. Estimate the total number of hours worked.

8 hr

7 hr 15 min

8 hr 15 min

7 hr 30 min

In a right triangle the measure of one acute angle is two times the sum of the measure of the other acute angle and 6. find the measure of each acute angle

Harold invested $30,000 in various stocks and bonds. He earned 6% on his bonds and 12% on his stocks. If Harold's total profit on both types of investments was $2,460, how much of the $30,000 did he invest in bonds?

Out of 260 racers who started the marathon, 231 completed the race, 26 gave up, and 3 were disqualified. What percentage did not complete the marathon?

How many ounces of a silver alloy that cost $4 an ounce must be mixed with 10oz of an alloy that costs $6 an ounce to make a mixture that costs $4.32 an ounce

Jacob wants to buy some apples for a class party. shop a sells apples at $3.99 for 4. shop B sells apples at $4.99 for 5. Jacob does some calculations and decides that the apples at shop a are cheaper. explain if Jacobs reasoning is correct.

Kailey wants to buy 4 pencils and 3 notebooks. witch expression shows how to find the total cost of 4 pencils and 3 notebooks. a. 3 ($0.50) + 4 ($2.25) b. 4 ($0.50) - 3 ($2.25) c. 4 ($0.50) + 3 ($2.25) d. 4 ($0.50) X 3 ($2.25)

If 48 men have ration for 16 days how long will the food last if a reinforcement of 16 men arrived

Explain how you know wether to choose grams or kilograms when measuring mass. Name an object you would measure each unit.

16:07:48 marks: Question: 1/20 The graph of which equation would be a circle with a center at (2.3) and a radius of 7? A. (x + 2y = (y - 3) = 7 B. (x - 2) = (y + 3) = 7 C. (x - 2y + (y + 3) 2 = 49 D.

Samuel wants to estimate what 5843 x. 00243 is. What should his first step be?