Asmaa
This page lists questions and answers that were posted by visitors named Asmaa.
Questions
The following questions were asked by visitors named Asmaa.
When red blood cells are counted using a certain electronic counter, the standard deviation (SD) of repeated counts of the same blood specimen is about .8% of the true value, and the distribution of repeated counts is approximately normal. For example, th...
15 years ago
What makes the mafic rocks dark in colour? Calcium or iron? I know that mafic rocks contain high amounts of both calcium and iron, but I don't know which one results in the dark colur.
8 years ago
Show that the volume of the largest right circular cylinder that can be inscribed in a given right circular cone is 4/9 the volume of the cone
4 years ago
An open storage bin with a square base and vertical sides is to be constructed from a given amount of metal, Detremine the dimensions if the volume is a maximum . Neglect the thickness of the metal.
4 years ago
A football player is attempting a field goal. His position on the field is such that the ball is 7.3 m from the left upright of the goal post and 10.2 m from the right upright of the goal post. The goal posts are 4.2 m apart. a. Find the angle marked θ. b...
2 years ago
This diagram shows a few roads in the town where Shannon lives. Shannon needs to know how much longer the road from P to T is than the road from R to T. What is the difference in the measurement of each road?
2 years ago
A man is flying in a hot-air balloon in a straight line at a constant rate of 5 feet per second, while keeping it at a constant altitude. As he approaches the parking lot of a market, he notices that the angle of depression from his balloon to a friend's...
2 years ago
Three circular gears with radius A = 5 cm, B = 2 cm and C = 6 cm are shown. If <CAB = 37o, how long would the arm need to be that connects the centre of gear A to the centre of gear C
2 years ago
Solve the following triangle completely (find all sides and angles). If more than one possible triangle exists, solve for all possibilities.
2 years ago
A farmer owns a triangular piece of land. He wants to find the length of the back of his property, which is mostly bog land. He knows that his left and right boundary lines connect near his house at an angle of 143°. The left boundary length is 95 m and t...
2 years ago
He knows that his left and right boundary lines connect near his house at an angle of 143°. The left boundary length is 95 m and the right is 110 m. Help the farmer determine the length of his rear property line.
2 years ago
Lara flies a helicopter over the well and drops a rope to measure her height above it. Exactly 125 m of rope is all she needs to touch the well; however, a steady wind is blowing the rope so it makes a straight line at an angle to the ground. Meanwhile, b...
2 years ago
Harrison and Lara—two tireless adventurers who face mathematical roadblocks and puzzles wherever they go—have to use a catapult to fire a large rock over a hill and into a well that they can't see from the catapult's location. They are not permitted to wa...
2 years ago
Harrison has one critical piece of information that you do not. Without it, you cannot determine the distance to the well with certainty. The information is not a measurement—Harrison will have no trouble determining it.
2 years ago
Bill determines that the angle of elevation to the top of a building measures 40°. If he walks 100 m closer to the building, the measure of the new angle of elevation will be 50°. Find the height of the building. Include a diagram and show your work.
2 years ago
An airplane is flying directly toward two forest fires. From the airplane, the angle of depression to one fire is 43° and 20° to the other fire. The airplane is flying at an altitude of 2500 ft. What is the distance between the two fires to the nearest fo...
2 years ago
A hockey player takes aim at the goalie net, whose posts are 2.0 m apart. The player is 7.0 m from one post and 8.2 m from the other post. Within what angle does the player have to shoot the puck in order to get it in the net?
2 years ago
Solve the following triangle for all missing information. Given for Δ MVH: m = 15.7 cm, angle M = 43° and v = 18.5 cm. Show your work and include a sketch. If more than one answer exists, sketch both triangles with all measurements included.
2 years ago
How many distinct triangles can be drawn given ΔABC where a = 10, c = 16, and ∠A = 30°?
2 years ago
Bill determines that the angle of elevation to the top of a building measures 40°. If he walks 100 m closer to the building, the measure of the new angle of elevation will be 50°. Find the height of the building
2 years ago
A contractor examines the city plans for a light rail transit system. The plans include a tunnel to be constructed between University Station and Mall Station. From point A to University Station is 975 m, and from point A to Mall Station is 2310 m. The an...
2 years ago
Bill determines that the angle of elevation to the top of a building measures 40°. If he walks 100 m closer to the building, the measure of the new angle of elevation will be 50°.
2 years ago
Owen would like to make a small income as an artist. Owen asked his friend Emily for advice about what combination of pictures to make. She suggested that he determine a reasonable profit for that month’s work and then paint what he needs in order to earn...
2 years ago
Zoe is creating “travel totes” and “bling baskets” as party favours for her sister Janine’s wedding. Janine has asked Zoe to make sure that there are at most 48 favours altogether and that there are at least 24 travel totes for her guests. If it costs $25...
2 years ago
e. To find three different combinations of watercolors and pastels that will earn Owen a profit of exactly $500, we need to solve the same system of inequalities and optimization equation, but change the profit value to 500: Profit = 40x + 100y = 500
2 years ago
Harrison and Lara have discovered a counterfeit jewelry operation. Two workers, Choot and Wanlah, sell fake "gold" watches and "diamond" rings for a notoriously frugal mob boss. They need to gather intel and file a report on their discovery. The adventure...
2 years ago
The adventurers learn that the mob boss demands a minimum of 12 watches and 30 rings to be sold every day, and has figured out how to get what he wants while paying his two workers the least possible amount (while still honouring their agreed-upon hourly...
2 years ago
Mr. Dupont makes chocolate chip muffins and very-berry muffins to sell in his bakery. He is limited by the following constraints: • Each chocolate chip muffin requires 4 minutes mix time and the very-berry muffins require 3 minutes mix time. The mixer is...
2 years ago
Let 3x + y = 60 and solve the system of equations with 4x + 3y = 120
2 years ago
Answers
The following answers were posted by visitors named Asmaa.