Nada

This page lists questions and answers that were posted by visitors named Nada.

Questions

The following questions were asked by visitors named Nada.

The Pont du Gard near Nimes, France is a roman aqueduct. An observer in a hot air balloon some distance away from the aqueduct determines that the angle of depression to each end is 54 degrees and 71 degrees respectively the horizontal distance between th...

Two fire stations,P and Q,are 20 km apart. A ranger at station Q sees a fire 15.0 km away. If the angle between the line PQ and the line from P to the fire is 25degrees, how far to the nearest tenth of a kilometre, is station P from the fire?

A sail boat on lake Huron leaves Southampton and sails 20degrees west of north of 20km. At the same time, a fishing boat leaves Southampton and sails 30degrees west of south for 15 km. At this point, hot far apart are the boats, to the nearest km? ( the a...

Solve for y to determine the inverse y=2-(1/2x)

What are the steps to graphing this quadratic equation? Y=(-2x)^2

Determine the roots of the function f(x)=-2cos(3x)-1. Can you please show all the work so it is easier to understand, thank you!!

a) Determine the equation of a sine function that would have a range of {y€R|-7<(or equal) Y <(or equal) 1} and a period of 135degrees. b) determine the cosine function that results in the same function an part (a). Any help provided will be greatly appre...

One of the aspects of instructional scaffolding is ownership which values the students own interpretations and requires them to argue for what they are saying. How does this aspect impact the teachers choices and decisions?

A teacher prepares 5 different books for 7 students.If each student can get one or no book from the teacher , find the number of ways of distributing the books among the students. can u explain it to me detailly.i have thought about this question for serv...

Calculate the pH of a buffer formed by mixing 85 mL of 0.16 M nitrous acid (HNO2, Ka = 4.6X10^-4) with 94 mL of 0.15 M sodium nitrate (NaNo2)

If tanx + cotx =5 tgen find tan^2x +cot^2x

A construction company uses a crane to lift a wrecking ball2000kg the crane can cause the wrecking ball to speed up from rest to 0.1m/s in 0.2 second what is the acceleration of the wrecking ball during this time

find the magnitude and dirction of the resultant force of two perpendicular forces F1=3N and F2=4N

One neon sign flashes every 6 seconds . Another neon sign flashes every 8 seconds . If they flash together and you begin counting seconds , how many seconds after they flash together will they next flash together

How many gold atoms are there in a pure gold ring containing 0.099 mol Au?

Calculate the number of moles of sulfur in 57.1 g of sulfur. Note that molar mass of sulfur is 32.06 g/mol

How is the flame test used to identify cations?

A pure gold coin contains 0.147 mol of gold(Au). What is its mass in grams? Note that molar mass of gold is 196.97 g/mol.

Answers

The following answers were posted by visitors named Nada.

I'm not sure if it is parllel, it dosent have a diagram so it got me confused! But I know it is not in 3D, the answer in the txtbook is 299.7m, I just need the method to get it

Um the answer I was given was 5.7km or 30.5km So how wud u get these answers?

Thank you so much:)

Srry but how did u get 145?

Ok so how did you get x to equal 20, 140,100........ And I also don't get where 3x=60 or 100 came from, can you please explain these parts by showing the math? Thank you

Ok I was wondering why the zero with the slash was in the equation, i have never seen that before!

Srry I keep asking questions, but I noticed that you left out the negative sign on the 2 when you set the equation to zero, was that a mistake or were you suppose to do it like that?

What would an example be. Because on my handout it says provide an example of how this aspect impacts the teachers choices and decisions.

in fact , u can substitude -5 into the x variable,and the write it like this: 2(-5)^3+9(-5)^2+k(-5)-15=0 then plz find k

but the correct ans is 2520,why?

ok.assume the water is contain in a tube of u-shaped. When there is a suituation u mentioned above happen in t=0s then,when t>0s the water level will be the same REASON: by conservation of energy (*set the lowest pt of the tube is the reference level) thi...

Whales and seals is the answer

@Reagan no they didn't

2/3 -F The force is represented as a positive quantity and is repulsive Electrostatic force is inversely proportional to the square of the distance The direction of the force changes and the magnitude of the force quadruples

How many gold atoms are there in a pure gold ring containing 0.099 mol Au?