Questions and answers by

McKenna Louise

Questions (53)

Prove the following:1/(tanØ - secØ ) + 1/(tanØ + secØ) = -2tanØ (1 - sinØ)/(1 + sinØ) = sec^2Ø - 2secØtanØ + tan^2Ø
1. 3 answers
2. 1,132 views
Verify the given equations:____1______ + ____1_______ = -2 tanθ tanθ – secθ tanθ + secθ 1 – sinθ = sec2θ – 2 secθ
1. 1 answer
2. 1,006 views
find the value of x in x^2-x-12=0
1. 1 answer
2. 358 views
Nick budgets from 300 pesos to 900 pesos for trees and/or bushes to landscape his yard. After shopping around, he finds that
1. 1 answer
2. 674 views
The Toyota Co. has a daily production quota of $100,000 worth of cars. They produce two types of cars. Their compact model (x)
1. 0 answers
2. 487 views
The Toyota Co. has a daily production quota of $100,000 worth of cars. They produce two types of cars. Their compact model (x)
1. 0 answers
2. 460 views
Lighthouse B is 7 miles west sof lighthouse A. A boat leaves A and sails 15 miles. At this time, it is sighted from B. If the
1. 1 answer
2. 2,432 views
Points M and N are separated by an obstacle. In order to find the distance between them, a third point P is slected which is 120
1. 0 answers
2. 634 views
If an observer stands at a certain point in the same horizontal plane as the base of a radio tower. the angle of elevation of
1. 1 answer
2. 675 views
Using the Law of Cosines, how can I show that the measure of each angle of an equilateral triangle is 60 degrees?
1. 1 answer
2. 494 views
Why cant we solve an oblique triangle with the Law of Sines if we are given SAS?
1. 1 answer
2. 1,089 views
What gas law explains why hot water diffused the food coloring faster than the cold water?
1. 0 answers
2. 553 views
Explain why we cannot solve an oblique triangle with the Law of Sines given SAS.
1. 1 answer
2. 623 views
Use the law of cosines to show that the measure of each angle of an equilateral triangle is 60deg. Explain your reasoning.
1. 1 answer
2. 525 views
What familiar formula can you obtain when you use the third form of the Law of Cosines c^2 = a^2 + b^2 - 2ab cos C and you let C
1. 1 answer
2. 596 views
How much pure acid must be added to a 30% acid solution to make a 60L solution which is 50% acid?
1. 1 answer
2. 559 views
How much water must be added to an 80% acid solution to make a mixture of 50mL which is 70% acid?
1. 1 answer
2. 487 views
Martina and Carl are part of a team that is studying weather patterns. The team is about to launch a weather balloon to collect
1. 1 answer
2. 953 views
Meg has a solution that is 40% alcohol and another solution that is 60% alcohol. If Meg wants 12 gal of a solution that is 45%
1. 4 answers
2. 583 views
DMF Feeds has two different types of cattle feed containing crude protein in the amount of 45% and 20% respectively. How many of
1. 1 answer
2. 769 views
1. ABC Feeds has two different types of cattle feed containing crude protein in the amount of 45% and 20% respectively. How many
1. 1 answer
2. 616 views
Ten years ago a man was three times as old as his son. In twelve more years, the son is three-fifths as old as his father. What
1. 1 answer
2. 668 views
Ayie is 7 years older than Luis. Next year, she will be one year more than twice as old as he will be. How old is she now?
1. 1 answer
2. 796 views
True or false.1. The system (2x - y = 3) and (x + 3y = 5) is consistent and independent. 2. There are infinitely many solutions
1. 2 answers
2. 489 views
1. The sum of the ages of James and Remy 5 years ago was 44. Twenty-two years from now, James' age will be 52 less than twice3
1. 2 answers
2. 510 views
(Engineering) The current / varies as the electromotive force E and inversely as the resistance R. If in a system, a current of
1. 4 answers
2. 1,820 views
1. What is the base of a triangle if its area is represented by 3z^2+ √5z mm^2 and its height is z − √3 mm?2. What will
1. 1 answer
2. 506 views
From the foot of a building I have to look upwards at an angle of 22degrees to sight the top of a tree. From the top of a
1. 2 answers
2. 707 views
An observer on the ground at point A watches a rocket ascend. The observer is 120 feet from the launch point B. As the rocket
1. 1 answer
2. 1,799 views
Hi! Can you please re-check my answers. Mt teacher said some of them are not right but when I do it again, I still come up with
1. 2 answers
2. 591 views
1. To avoid a steep descent, an airplane flying at 10 000 m starts its descent 60km away from the airport. For the angle of
1. 2 answers
2. 617 views
1. When you look down from the top of a building at an angle of 63degrees, you will see a man reading a newspaper. If the
1. 2 answers
2. 487 views
A helicopter hovers 105 m above the end of an island. If the angle from the helicopter down to the other end of the esland is
1. 1 answer
2. 448 views
1. From a point 15m from the base of a tree, the angle of elevation of the top of the tree is 46.48degrees. Approximate the
1. 1 answer
2. 635 views
If a varies inversely as b, and b is increased by 50%, what is the percentage of change in a?
1. 1 answer
2. 539 views
1. Given that points S and R on opposite sides of a lake, triangle SRT is formed. To find the distance RS across the lake, a
1. 1 answer
2. 823 views
1. Find the altitude of an isocles triangle having base 184.2 cm if the angle opposite the base is 68deg 44'2. A 13.5m fire
1. 1 answer
2. 1,364 views
1. The force (in Newtons) applied to an object varies jointly as its mass and acceleration. How much force is needed to
1. 1 answer
2. 2,270 views
A car takes 3 hours to travel a distance of 240 km with a speed of 80 km/h while a motorbike can cover the same distance in 4
1. 1 answer
2. 553 views
1. The area of a square varies directly as the square of its side. If the side is halved, what would be the effect on its area?2
1. 1 answer
2. 1,670 views
Use the following verbals according to the functions provided.1. scanning as a predicative nominative 2. polluting as a
1. 1 answer
2. 516 views
The pressure of a gas varies directly as its temperature. IF the pressure of a gas is 200 pounds per square inch (lb/in^2) at a
1. 2 answers
2. 914 views
If a man wewighs 41 newtons (N) on the surface of the earth while he weighs 81.5N on the surface of the moon, approximately how
1. 2 answers
2. 1,113 views
If h^2 = 40000 j^8, then the principal root of h is _____.
1. 1 answer
2. 298 views
Bracy would like to form a right triangle our of her wooden sticks. She cut the first stick of the length 6 inches and the
1. 1 answer
2. 429 views
Mrs. Fine had a car accident. According to the police investigation, her car make skid marks which were 42 ft in length. What
1. 0 answers
2. 582 views
Write an equation for the given:"f varies inversely as m and f is 32 when m is 0.2." Also, find f is m = 4.
1. 1 answer
2. 391 views
What is the period of the pendulum if its length is 2ft?
1. 1 answer
2. 384 views
If Noah made skid marks of 350 ft long after a car accident, was he overspeeding before the event?
1. 1 answer
2. 440 views
What length will Jem swim diagonally if she wish to reach the opposite corner of a15-meter pool which is square in shape?
1. 1 answer
2. 355 views
To save a woman from a building, a fireman placed a 12-meter ladder against the wall. The foot of the ladder was 2 meters from
1. 1 answer
2. 400 views
What is the measure of the side of a cube if the volume is 27000cm^3?
1. 1 answer
2. 474 views
A cylindrical tank could hold 100.48m^3 of water. If the height of the tank is 2m, what is the radius of its base?
1. 1 answer
2. 1,175 views

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