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Don

Questions and answers by Don

Questions (206)

If a tree is 10 feet tall after two years and 25 feet tall after 5 years, find the rate of change of growth of the tree if y is
1. 5 answers
2. 3,085 views
If a sample contains 50g of carbon 14 and 50g of nitrogen 14 , how many lives has it undergone ?
1. 2 answers
2. 716 views
According to the theory of gravitation, the earth must be continually “falling” toward
1. 1 answer
2. 385 views
Give two advantages that a telescope lens or mirror of large diameter has over one of small diameterMore light gathering ability
1. 2 answers
2. 505 views
I need to to round 423,607,492 to the ten thousands. I then need to round it to the million. Can someone help me.I will be happy
1. 3 answers
2. 884 views
I need help withwrite the equation of the line which contains the point (0,negavtive 3), or written ars(0, -3) and whose slope
1. 1 answer
2. 396 views
The length of a rectangular lot is 50 feet more than the width. If the perimeter is 500 feet, then what are the length and
1. 3 answers
2. 424 views
The present value P that will amount to A dollars in n years with interest compounded annually at annual interest rate r, is
1. 3 answers
2. 537 views
If a manufacturer charges p dollars each for rugby shirts, then he expects to sell 2000 – 100p shirts per week, What
1. 1 answer
2. 443 views
A roof truss is in the shape of a triangle with height of x feet and a base of 2x + 1 feet. Write a polynomial A (x) that
1. 2 answers
2. 933 views
How does the supreme court show that the constitution allows congress to exercise the power to regulate commerce within a state?
1. 1 answer
2. 374 views
A spaceship is observed traveling in the positive x direction with a speed of 150m/s when it begins accelerating at a constant
1. 4 answers
2. 5,394 views
What is the answer to 3 times the square root of 2?
1. 3 answers
2. 775 views
What is the rule for adding or subtracting fractions?
1. 4 answers
2. 1,343 views
What is the rule for multiplying or dividing fractions?
1. 3 answers
2. 758 views
I was wondering if someone could show me how to post links on this website. It gives me an error when I try to post a link in my
1. 3 answers
2. 484 views
Could you please help me: Does plasma have a definite shape or volume?
1. 1 answer
2. 425 views
What is the difference between radiant, solar, and thermal energy? Thanks
1. 1 answer
2. 317 views
What is the difference between radiant, solar, and thermal energy? Thanks
1. 1 answer
2. 423 views
Does anyone know of any Scarlet Letter quotes that sum up the theme of isolation? Thanks
1. 1 answer
2. 432 views
Which amendment banned discrimination between genders?
1. 3 answers
2. 343 views
The length of a rectangle is fixed at 29cm. What withs will make the perimeter greater than 70cm? The width must be greater than
1. 1 answer
2. 369 views
Joe's electric made 18 customer calls last week and 25 calls this week. How many calls must be made next week in order to
1. 4 answers
2. 1,063 views
A certain kind of animal weighs about 71 pounds at birth and gains about 2 pounds per day for the first few weeks. Determine
1. 4 answers
2. 1,007 views
Solve using the addition & multiplication principles8x-13<-45 Solution {x]x__ __}
1. 3 answers
2. 483 views
Could someone solve this for me please?(-3).(-7)>(-3)(-4) and also determine whether the inequality is true or false.Thank you
1. 1 answer
2. 347 views
From a base elevation of 8200 ft. a mountain peak in colorado rises to a summit elevation of 14588 ft. over a horizonal distance
1. 7 answers
2. 674 views
what are Visual elements?
1. 2 answers
2. 473 views
Jameal is ar the preoperational level of cognitive development. When he is asked why there is food on his plate, Jameal's most
1. 4 answers
2. 405 views
a net loss of $50,000 in 2009 and net income of $250,000 in 2010. The increase in net income of $300,000can be stated as 200%
1. 1 answer
2. 429 views
Origin of social studies in britian
1. 2 answers
2. 725 views
What is the current practical limit on the number of GEO satellites?
1. 1 answer
2. 421 views
your friend says that the equivalent (combined) resistance of resistors connected in series is always more than the resistance
1. 2 answers
2. 712 views
Give the equation of the circle with the given center and radius.Center at (0, 0); radius = 5
1. 1 answer
2. 417 views
Write an equation of the line satisfying the given conditions.Vertical line through (6, -6)
1. 3 answers
2. 1,569 views
8)Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this
1. 2 answers
2. 518 views
suppose that you know that a given parallelogram has at least one right angle and at least two adjacent sides that sre
1. 1 answer
2. 444 views
Use the discriminant to determine how many real number solutions the equation has.t^2 + 8t + 16 = 0
1. 3 answers
2. 1,136 views
If the surface area of a sphere decreases, will the value of the volume remain the same?
1. 1 answer
2. 325 views
Anyone know about how much a button weighs in mg?
1. 1 answer
2. 310 views
if you buy 10 pizzas and cheese pizzas cost $11, write equation giving the cost "C" in dollars as a function of the number "P"
1. 1 answer
2. 417 views
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron
1. 2 answers
2. 1,667 views
Write balanced equations for the following reactions.Express your answer as a chemical equation. Identify all of the phases in
1. 2 answers
2. 806 views
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron
1. 1 answer
2. 886 views
Write electron configurations for the following ions.Tl^+ [Xe]4f^145d^8 is that correct?
1. 3 answers
2. 574 views
Use Newton's Method with the functionf(x)=x^2-2 and initial value Xo=2 to calculate x1,x2,x3. I have no idea how to do this
1. 1 answer
2. 456 views
I need a article that talks about the competitive nature of international business.also I want to know what it means
1. 4 answers
2. 447 views
a container of 2.00 moles of an ideal gas as 1000 K undergoes a constant pressure and volume process in which the number of
1. 4 answers
2. 623 views
How much vinyl chloride is needed to fill a tank of 250 liter with a 13.5 solution?
1. 1 answer
2. 306 views
Two secant segments are drawn to a circle from a point outside the circle. The external segment of the first secant segment is 8
1. 2 answers
2. 581 views
Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the
1. 3 answers
2. 2,160 views
Consider a glass of 277 mL of water at 25°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C
1. 2 answers
2. 776 views
So I have had several homework problem like this and managed to solve them easily, but these two problems I cannot get the
1. 2 answers
2. 544 views
If one company(A) owns another company(B) and Company B owns a third company (C) is it safe to say that Company A owns part of
1. 3 answers
2. 1,419 views
in a compound of nitrogen and oxygen, 14.0 grams of nitrogen combines with 32.0 grams of oxygen. How much oxygen is required to
1. 2 answers
2. 634 views
I need help scanning "Combing"
1. 1 answer
2. 318 views
2. Then it should prompt the user for the input file name of the file containing the data to sort.3. If the program can't open
1. 5 answers
2. 1,453 views
Locations of hot spots remain fixed for a long time. Asplates move across such hot spots, they form chains of volcanoes. The
1. 2 answers
2. 673 views
A 3.5 kg block is pushed along a horizontal floor by a force of magnitude 15 N at an angle è = 40° with the horizontal. The
1. 6 answers
2. 18,924 views
Two 0.85Mtrs -long pendulums hang side by side. The masses of the pendulum bobs are 50g and 70g . The lighter bob is pulled
1. 1 answer
2. 983 views
Two 0.85Mtrs -long pendulums hang side by side. The masses of the pendulum bobs are 50g and 70g . The lighter bob is pulled
1. 1 answer
2. 675 views
A 130g ball moving at 0.35m/s in the x-direction is subject to a 0.25N force in the - y-direction for 1.0s. Find the magnitude
1. 1 answer
2. 311 views
A roof in the shape of an upside down cosine wave is to be built to cover an arena. The arena is 24 m wide, the height of the
1. 1 answer
2. 473 views
Solve : cosxtanx + root3cosx - root3/2tanx - 3/2 = 0Give exact answers and formula for the general solution as well as the
1. 1 answer
2. 447 views
A roof in the shape of an upside down cosine wave is to be buile to cover an arena. The arena is 24m wide, the height of the
1. 2 answers
2. 529 views
write equations expressing:19cos(theta-50degrees) as a sum of sine and cosine.
1. 1 answer
2. 402 views
In steps how do you go from:y = 25cos pi/200x + 30 to get the answer 44.695
1. 1 answer
2. 424 views
What's next?Solve: cosx(tanx + sqroot3) - sqroot3/2(tanx-sqroot3) Provide exact answers .. help
1. 3 answers
2. 406 views
If a force of 20N stretches a spring 15 cm, by what amount will the spring stretch is if a force of 80 N is applied?
1. 3 answers
2. 681 views
The first step in solving the equation:4 sinx - sinx = 0 is what?
1. 1 answer
2. 315 views
Eight Fundamental IdentitiesSec thada - Cos thada How do I do this?
1. 3 answers
2. 497 views
Please disregard last question .... wrote it down wrong ..Thanks
1. 1 answer
2. 289 views
Eight Fundamental IdentitiesSec thada - Cos thada- on one side tan thada sin thada- on the other side How do you do this ???
1. 1 answer
2. 364 views
Column 1 Column 2sec theta - cos theta tan theta sin theta Question: how do you get column 1 to be the same as column 2 ?? using
1. 1 answer
2. 439 views
Column 1 Column 2(sin theta + cos theta)sq 1 + 2sin theta cos theta Question : how do you get column 1 to be the same as column
1. 1 answer
2. 397 views
Thanks for the help Damon. Much appreciated.Don
1. 1 answer
2. 273 views
Prove that the equation is an identity:cot4theta - csc4theta = -cot sq theta - csc sq theta How ??
1. 2 answers
2. 900 views
Prove the equation is an identity :csc3theta - csctheta + cottheta/csctheta = cotsqtheta + costheta wow ... try that one
1. 1 answer
2. 339 views
The next two steps in solving this trig identity question are ???1/csctheta x costheta x sintheta x sectheta = sinsqtheta arghhh
1. 1 answer
2. 438 views
If sin = 2/3 and is a second quadrant angle, determine the exact value of sec^2could be a. 5/9 b. root5/3 c. 9/4 d. 9/5 Please
1. 3 answers
2. 934 views
Thanks a bunch
1. 1 answer
2. 268 views
sin/tan = ?
1. 2 answers
2. 818 views
( sec -1 )(sec +1 ) = ?
1. 2 answers
2. 772 views
cot (tan + cot) = ?
1. 3 answers
2. 298 views
Rewrite tan 88 deg in terms of its cofunctionHow does that end up????
1. 2 answers
2. 1,213 views
Use reduction identities to determine if the following statement is true or false:tan (A-B) = tan (B-A) Is this starement True
1. 1 answer
2. 464 views
cos45cos25 - sin 45sin25 = ??a. cos70 b. sin70 c. cos 20 d. sin 20 which answer is correct ?
1. 2 answers
2. 550 views
sin45cos25 + cos45sin25 = ??a. cos70 b. sin70 c. cos20 d. sin 20 which answer is correct ??
1. 4 answers
2. 371 views
If tanx = 2/3 tany = 1/2then tan(x-y) = ?? a.7/4 b.7/6 c.1/8 d.8/6 which answer is correct ??
1. 5 answers
2. 332 views
If sinx = 1/4 Find the exact value of cos2xI used the formula for double angle identities : cos2x = 1-2sin^2x and got the answer
1. 3 answers
2. 811 views
Half angle identitiesFind exact values of a) cos 1/2 b) sin 1/2 c) tan 1/2 based on: cos = 1/5 greater than 270 deg less than
1. 3 answers
2. 442 views
Half Angle Identitiescosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I
1. 1 answer
2. 346 views
If the center of a circle is at(2,2) with a radius of 4 the equation of the graph would be : a) (x-2)^2 + (y-2)^2 = 16 b)
1. 2 answers
2. 1,147 views
The radius of:(x+2)^2 + (y-3)^2 =9 is 3 is this correct?
1. 1 answer
2. 278 views
The center of the circle(x+2)^2 + (y-3)^2 =1 is a. (2,3) b. (-2,3) c. (2,-3) d. (-2,-3) I believe b. is the answer, is that
1. 1 answer
2. 266 views
the center of a circlex^2 + y^2 + 8y =1 is a. (0,-2) b. (0,4) c. (0,1) d. (0,-4) I believe the answer is (0,4) Am I correct ?
1. 6 answers
2. 330 views
Proving Identities:2 columns (tan + cot)^2 = sec^2 + csc^2 I'm having trouble breaking down the left side to = the right side..
1. 7 answers
2. 439 views
(sin/cos)/ ( 1/cos - 1) = I'm stumped
1. 5 answers
2. 360 views
The question is:Set up a 2 column proof to show that each of the equations is an identity. Transform the left side to become the
1. 2 answers
2. 538 views
(x+3)^2/4^2 + (y-2)^2/5^2The location of the Foci are at: a.(-3,-1) and (-3,-5) b. (-3,2) and (-3,5) c. (-3,-3) and (-3,7) d.
1. 1 answer
2. 276 views

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