You could use 4(division) sign 25 + 3 (division sign) 15 * 10, ok?
Answer:
7
Step-by-step explanation:
6.7 rounds up to 7
First. we use the Pythagorean theorem:
Add the numbers in
start simplifying
So, the leg has a length of 40 mm.
The hot tub takes in 1,520 watts everyday to keep its water warm. A kilowatt has 1,000 watts (hence kilo means 1,000). 1,520 divided by 1,000 equals 1.520. However, this isn't free electricity - Each kilowatt costs 8 cents or 0.08 of a dollar. 1.520 x 0.08 = 12.160 or $12.16. We aren't done yet! This hot tub runs for 4 months (and we are assuming these months exactly have 30 days each). 4 x 30 = 120. $12.16 x 120 = $1,459.20. In order to keep the hot tub running, you need to pay 1,459.20 for all the kilowatts of electricity it takes.
