HELP WITH TRIG WORD PROBLem!!!!?
I am in 8th grade and we are doing trig. its all pretty easy except im stuck on one problem: Jane needs to know the height of a tree in her yard. From a point on the ground she finds the angle of elevation to the top of the tree is 36.7 degrees. She can move back 50 ft and from this second point the angle of elevation to the top of the tree is 22.2 degrees. Find the height of the tree. (Note: For this problem you do not have to account for Jane's height).
Can anyone solve the word problem?
length=x width=x+2 x*(x+2)=143 x^2+2x-143=0 x^2+13x-11x-143=0 x(x+13)-11(x+13) (x-11)(x+13) x=11 or x=-13 since dimensions cannot be negative x=11 x+2=13
Tricky Word Problem?
The following general equation applies to these "work" problems because (1/time alone) is that person's RATE, i.e. what portion of a room can they paint per hour. Rate times time is the amount of work done. So this equation just adds the amount of work each person does to finish ONE job. Time together / time alone + time together / time alone = 1 If F = time it takes father to do the job alone and B = time it takes boy to do the job alone, we get this equation: 8/F + 8/B = 1 Secondly, we know that if the father works 9 hours and then is joined by the son for 6 hours, they will complete the job. That information yields this equation: 9/F + 6/B = 1 You can solve the system in 2 variables and get F=12, B=24. If you need help solving the non linear system, I would suggest that you use the elmination method and multiply equation #1 by -3 and equation #2 by 4: -24/F - 24/B = -3 36/F + 24/B = 4 ----------------------- 12/F = 1 F = 12 36/12 + 24/B = 4 24/B = 1 B = 24
Help for making this word problem? Pleasee?
Sam wants to build birdhouses to sell, but he only has $60 to spend. After an initial set-up cost of $25 for tools and such, he figures it only costs him $0.50 in materials to build each birdhouse. How many birdhouses will Sam be able to build? 25 + 0.5x <= 60 0.5x <= 35 x <= 70 ---------------------------------------...
How do I solve this mathematical word problem?
If you examine 400 deer and find 30 tags, then if you examine 800 deer you'd expect to find 60 tags. You asked for an 'estimate', which I interpret to be a BOTEC (back of the envelope calculation), an effective strategy by itself for many situations, and a powerful strategy for 'checking your answer' if you do the math explicitly. Without doing any further 'math', a good estimate would be 'somewhat more than 800', or about 1,000. Note: The BOTEC agrees with the other explicit answers provided. Do not expect a BOTEC to be accurate within 5-10%, but it can serve as a reality check very quickly and easily. Try this one: Pencil and paper, no Google, no calculator; you have 60 seconds. The Empire State Building is 102 stories tall. You are given a container of nickels that reach from the ground to the roof in a single stack. You are in a room with 1 sq-ft floor tiles and a 20-ft ceiling. Can you stack all the nickels on a single floor tile? How high will the stack be?
Write a word problem that can be modeled by the equation x/4(fraction) + 8= 10?
We need 10 people to form two basketball squads. So far, we only have 8 people. But if we can convince 1/4 of the people in the gym to join us, we will have enough people. How many people are in the gym?
Students Hate Word Problems?
I teach high school math, and I can think of two reasons most kids hate word problems. 1. It requires reading, and many students aren't comfortable reading math words, terms, etc. 2. Most word problems involve multi-layers of computations which quickly causes stress - which one to do first...where do I put the numbers...... These can be easily worked out using different colored highlighters to mark what the question really is, how the answer should look, etc.
What function would I use to solve this word problem?
In the Baja Desert Dune Buddy Race, participants travel in pairs consisting of a driver and a navigator. The riace lasts several days and covers several hundred miles. There are periodic required check-in spots throughout the route. At one of the check-ins, a navigator is found to be dehydrated and needs to be transported to the nearest hospital. The check-in spot is located 25 miles from a point on th e main road that is 70 miles from the hospital. The navigator will be driven by a medic to the main road to meet an ambulance; the ambulance will be on a road that runs directly to the hospital. The goal is to get th e navigator to the hospital as quickly as possible. Question: If the dune buddy transporting the navigator travels 40 miles per hour and the ambulance travles 60 miles per hour, where along the road should the medic and the ambulance meet in order to minimze the time that the navigator must spend traveling? I don't need the answer, I just need help figuring out what function to use to solve the question. Please provide an explanation.