A biologist observes that a certain bacterial colony triples every 4 hours and after 12 hours occupies 1 square centimeter. a. How much area did the colony occupy when first observed? b. What is the doubling time for the colony?

Q: How many cubic inched of fiberglass composite are needed to create each sleeve, to the nearest tenth…

A: volume of cylinder=π r^2h

Q: Use the Egyptian's formula to calculate the area of a circle with diameter of 8 units. (roundoff…

A:

Q: Solve for the volume of the composite figures. Round to the nearest hundredth. 3 in. 8 in. 11 in.

A: Volume of a hollow cylinder = External cylinder volume - Internal cylinder volume = π R2 h - π r2 h…

Q: A trench is 180 ft long and 12 ft deep, 7 ft wide at the top and 4 ft at the bottom. How many cubic…

A:

Q: Use the Babylonian's formula to calculate the area of a circle with diameter of 13 units. (roundoff…

A: To find The area of a circle by using Babylonians formula.

Q: C. After heating, a metal rod has expanded 4% to 16 cm. What was the original length?

A: Given: After heating, a metal rod has expanded 4% to 16 cm   To determine: The original length of a…

Q: Suppose that you must order concrete for a sidewalk 46 ft by 6 ft to a depth of 4 in. How much…

A: ft can be change to yard by Dividing feet by 3 feet per yard inch can be change to yd by Dividing…

Q: How many revolutions will a circular disk with a diameter of 4 feet have completed after it has…

A: Given: Diameter of Disk,D=4 feet

Q: A square is enlarged by increasing the length of its sides by 14%. If the length of its sides was…

A:

Q: Approximately how many square inches of space are blank?

A:

Q: A bicycle wheel travels 116.24 inched in one revolution. What is the approximate diameter of the…

A: Given: A bicycle  wheel travels 116.24 inches in one revolution. To find the diameter of the tire

Q: How much dirt is there in a hole 13 meters long, 7 meters wide and smeters deep? There are o cubic…

A:

Q: A house is on a 60,000- squarefoot lot. Rounded to thr nearest tenth, approximately how many acres…

A: Use square foot to acres conversion formula

Q: A cube could be made using the net below. What would be the total surface area of the cube created…

A: We can find out the area of the cube in the following step

Q: What is the pison displacement of a piston that is 5 in. in diameter and has a 5.5 in. stroke?

A: Given data:L = 5.5 in.D = 5 in.The piston displacement is equal to the volume of the strokeAnd the…

Q: Give that the glass can hold a maximum volume of 60 cm3,what is the height of the glass? Round to…

A:

Q: It has been determined that a 768 sq ft house would require a 5-ton airconditioner. For this same…

A:

Q: How long is the side length of a cube that displaces 2 gallons of water in cm. (Round to 2 decimal…

A:

Q: 15 in.

A:

Q: a groove 7/8 inch deep is to be milled in a steel plate. how many cuts are required if each cut is…

A: ANSWER:

Q: The hour hand of a grandfather clock is 8 inches long. How many square inches of the face of the…

A:

Q: A biologist observes that a certain bacterial colony triples every 4 hours and after 12 hours…

A: Let Pt be the population at time t. Then, Pt=P0ekt. In our case, at t = 4 hours, P4=3·P0. That…

Q: A construction worker, 36 feet up on a scaffold, lifts a 4-Ib rope hand over hand up to the scaffold…

A:

Q: Gold lining paper is used to cover the inside of the shoe box, as shown below. How many square…

A:

Q: A hemisphere igloo has a volume of about 9,202.8 m3. What is the area of the floor of the igloo?…

A: Given: A hemisphere igloo has a volume = 9,202.8 m3To find:The area of the floor

Q: Find the volume of a water bottle that has a diameter of 6 cm and a height of 12 cm. Volume = (Round…

A:

Q: Two square base pyramids measures 6 cm whereas the of the second pyramid mea Calculate the total…

A: Given data is ,      Side of first pyramid base x=6cm Side of second pyramid base y=4cm Let the…

Q: If a basketball is inflated to be eight times its original volume, how many times bigger is the…

A:

Q: A cyclist rides at a rate of 20 mph for 45 min. How far does the cyclist travel in that time?____mi

A: Given: Speed of the cyclist, v = 20 mphtime taken, t = 45 minConverting time into hours, t = 45/60…

Q: 8. 8 yd

A: Solution of the problem as follows

Q: A reservoir is shaped like a square prism. If the area of the base is 225 sq. em., how many liters…

A: Given: Area of the base = 225 cm2

Q: 26. A boy walks 10 m north then 3 m west. What is his total displacement?

A: Using pythogereon theorem to find total displacement     As per our guidelines we are supposed to…

Q: is the volume of the cube sh

A: In geometry, a cube is a three-dimensional solid object bounded by six square faces,  or sides, with…

Q: What is the area of a regular pentagon (in square meters) with side 5 m? ROUND OFF ANSWER TO TWO…

A: In this question, concept of area of a regular pentagon is applied. Regular Pentagon The region…

Q: A 24 in diameter wheel travels 300 inches. How many turns does it make?

A: The diameter of the wheel is given as 24 inches. Thus, the radius (r) of the wheel will be 12…

Q: A meteorologist measured the eyes of hurricanes to be 13 to 18 miles in diameter during one season.…

A:

Q: A biologist observes that a certain bacterial colony is multiplied by 4 every 7 hours and after 28…

A: a) Area occupied by the colony when first observed:  Area occupied by the colony when first observed…

Q: A company offers free shipping on orders that weigh less than 5000 grams. Use the facts to find how…

A: Given,            A company offers free shipping on orders that weigh less than 5000 grams.To find :…

Q: A worker on a scaffolding 75 ft above the ground needs to lift a 550 lb bucket of cement from the…

A: Use work is equal to force into displacement

Q: A hole is to be drilled in a metal plate 4 in. in diameter. What is the diameter in cm and in mm?

A:

Q: A house is only 60000 squarefoot lot.  rounded to the nearest tenth. approximately how many acres…

A:

Q: 21. Find the weight of the heaviest circular cylinder can be cut from a 16-lb shot.

A: Find the Weight of the heavies circular cylinder that can be cut from a 16-lb shot.

Q: 16 yd

A:

Q: Each side of a square is increased 8 inches. When this happens, the area is multiplied by 25. How…

A: assume that the length of the original square is "x" inches.

Q: a guy wire is stretched from a communications tower in a nature preserve at a point 200 feet above…

A: It is given that the length of the tower is 200 feet and the anchor is 125 feet from the base. so,…

Q: Use the Egyptian's formula to calculate the area of a circle with diameter of 4 units. (roundoff…

A:

Q: How many microliters are contained in one millimeter?

A: To find:- How many microliters are contained in one millimeter?

Q: Use the Babylonian's formula to calculate the area of a circle with diameter of 12 units. (roundoff…

A: In  Babylonian's table π = 3.125