1.The sum of two rational numbers is –814. If one of the numbers is -523, find the other number. 2.Parcel P weighs 412. pounds, parcel Q weighs 325 pounds and parcel R weighs 645 pounds. Find the average weight of the three parcels.

3.The highest temperature ever recorded in Europe was 118.4°F in Athens, Greece in 1977. The lowest temperature in Europe was recorded in Ust Shchugor, Russia in 1978. This temperature was 191°F lower than that of the highest temperature recorded in Athens. Find the lowest temperature ever recorded in Europe.

4.In 2010, a company reported a net income loss of $23.8 million. In 2011, the company reported a net income gain of $10.4 million. How much more income did the company earn in 2011 than in 2010?

5.Fiona has $10 to pay to pay school fees for three art projects. The fees for each project are $2.50, $6.75, and $2.80 respectively. How much more money does Fiona need?

6.In Fairbanks, Alaska, the average temperature in January is -9.7°F. The average temperature in July is 62.4°F. On average, how many degrees colder is Fairbanks in January than in July?

they are all different questions

Item 1 solve for s. s+24=90 −114 −66 66 114

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?