# Calculus (Answer Check)

87,577 results, page 46

### Pre-Calculus

The angle θ is in the second quadrant and tan θ = -3/5. Point P is on the terminal arm of angle θ/ Which is a possible coordinate for P? A) (-5,√29) B) (-3,√29) C) (-10,6) D) (-6,10) I drew the triangle, and aren't the coordinates supposed to be (-5...

### math, calculus

1. Consider the region bounded by the curves y=|x^2+x-12|, x=-5, and x=5 and the x-axis. A. Set up a sum of integrals, not containing an absolute value symbol, that can be used to find the area of this region. B. Find the area of the region by using your answer from part A. ...

### calculus

A container of hot liquid is placed in a freezer that is kept at a constant temperature of 10°F. The initial temperature of the liquid is 160°F. After 5 minutes, the liquid's temperature is 60°F. How much longer will it take for its temperature to decrease to 20°F? (Round ...

### Science

The theory of demographic transition is based on the idea that industrial development causes __________ and ___________ progress that affect population growth rates. Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts ...

### calculus

derivatives differentiate y=x^7/3 So far I have Y=7/3X Is this all there is to this problem? Using the power rule, you bring the exponent down, just like you did. Then, you subtract one from the given exponent to get the new exponent. 7/3 - 1 (which is 3/3) gives you a new ...

### Calculus

Evaluate the limit, if it exists. lim (sqrt(x+2) -3)/(x-7) (x -> 7) I tried multiplying the numberator and denominator by the conjugate of the numberator (sqrt(x+2) +3) but, unless I multiplied wrong, I still ended up getting 0/0, when my calculator and the book say that I ...

### calculus

Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too urgent

### Maths (Calculus)

A current i = 50sin 100πt mA flows in an electrical circuit. Determine, using integral calculus, its a) Mean Value b) RMS Value each correct to 2 decimal places over the range t = 0 to t = 10 ms I need to do this two way so I was thinking of using the trapezoidal rule and...

### Integration

Intergrate ¡ì sec^3(x) dx could anybody please check this answer. are the steps correct? thanks. = ¡ì sec x d tan x = sec x tan x - ¡ì tan x d sec x = sec x tan x - ¡ì sec x tan^2(x) dx = sec x tan x + ¡ì sec x dx - ¡ì sec^3(x) dx = sec x tan x + ln |sec x + tan x...

### Calculus

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer. V = πr²h = 16πr² dV/dr = 32πr dV = 16πr dr Let dV and dr...

### maths, algebra

State the degree of each of the following: a)3 b)x^0 My answer for a) was: 1 My answer for b) was: 1 BUT at the back of the book, the answer for a) was 0. The answer for b) was also 0. I just don't understand why I'm wrong.

### math

I checked the answer in my textbook on what the answer is if I factor 2x^2-x-10 The answer is (2x-5)(x+2) That answer makes sense to me if I expand it I'll get 2x^2-x-10. My issue is I don't know how I would get 2x^2-x-10 in factored form

### Mrs.sue help me plz!!

The boys got into bed Byron was up in his top bunk and Kenny was down in the bottom Kenny was so exited that he was talking a mile a minute although he realized that he was probably just talking to himself. Byron was still upset about the trip so he refused to answer. There ...

### Chemistry check and help

so for all the chemical formulas if there is no subscript (for the valency of the element) does it mean it is a one or do i have to find the valency on the periodic table of elements? ex. P02 the P for Phosphorus doesn't have a number does it mean it is a one then ex.SO3 ex....

### Algebra

I have 3 questions with my answers and would like you to check them. If they're wrong, then please provide and explanation to how to do them. Thank you tutors. Write each sentence as an equation. 1. Eight less than 1/3 a number n is -13. My answer: 1/3-8n = -13 2. A number f ...

### Drivers Ed.

What conditions determine an open rear zone? What are the three stopping positions? When turning, where should your last check be? When must you check your mirrors? When turning left, what should your searching procedure look like? When entering a roadway from an alley, ...

### pre-calculus

solve the equation 1. In x + In (x+12) =2 x= ? or either there is no solution 2. solve the exponential equation 9^x=6 What is the exact answer? 3. Use transformations to indentify the graph of the function. Then determine its domain, range, and horizontal asymptote. f(x)=2^-x+...

### Calculus AB

Find the x-coordinates of any relative extrema and inflection point(s) for the function f(x) = 3x(1/3) + 6x(4/3). You must justify your answer using an analysis of f '(x) and f "(x). My start to a solution: x-values: (-1/8) and (-1/4) I got -1/8 from f'(x)- extrema I got -1/4 ...

### exceptional children

a naturalistic language-learning environment a occurs mostly in the home b. is created whenever a child is communicating with others c. occurs mostly in speech therapy d. excludes speech therapy I chose "c" as my answer can someone please check

### chemistry(Please check)

1) In comparing the phase diagram for water with that of a solution of sugar in water, all of the following decrease except a) the vapor pressure b) the boiling point c) the freezing point d) the triple point I chose the boiling point as the answer. Is this correct? Thank you.

### Science 7R - HW Qs. Check (Q2)

why are there fewer organisms as you move toward the top of the energy pyramid? answer - As you move up the pyramid the transfer of energy (10 pct per level is transfered) is less efficient & each level becomes smaller. am i correct???? (please be honest)

### Chem Check Please!!!

Calculate for the electrochemical cell below, Ag(s) | AgCl(s) | Cl–(aq) || Cu2+(aq) | Cu(s) given the following standard reduction potentials. Cu2+(aq) + 2 e– -> Cu(s) E = +0.337 V AgCl(s) + e– -> Ag(s) + Cl–(aq) E = +0.222 V a. –0.115 V b. –0...

### Science -- Check my Answer Plz

How much heat (calories) must be applied to a 100 mL beaker filled with boiling water in order to vaporize the water? ** A) 540 cal ** B) 540 * 10^4 cal C) 800 cal D) 8000 cal Is A correct? or cud it be B.?

### calculus

sorry for the probably simple question, but i haven't done this stuff in a long, long time. thought i had this right, but again not finding the answer which of the following gives the slope of the tangent line to the graph of y=2^(1-x) at x=2? a)-1/2 b)1/2 c)-2 d)2 e)-(ln2)/2 ...

### Math 8R - HW Qs. Check

Fill in the numbers to continued the pattern. 1000, 900, 700, 400, ____, -500, _____ My Answer - 1000, 900, 700, 400, 0 , -500, 1000 1000 - 100 = 900 900 - 200 = 700 700 - 300 - 400 400 - 400 = 0 0 - 500 = -500 -500 - 600 = -1,100 Is my answer is correct???

### French

Hi, I'm doing a french crossword puzzle and I need you to check the words that I filled in the blank. 1. C'est un boutique très élégante. Les -------- sont chers. Answer: Prix 2. A(with an accent) mon ---------, le blouson vert est plus joli que le blouson gris. Answer: ...

### math

Lydia is comparing two checking accounts, one has a monthly fee of $10 and a per-check fee of $0.10, and the other has a monthly fee of $5 and a per-check fee of $0.25. What is the minimum number of checks Lydia needs to write for the first bank to be a better option?

### math

22and9/10's - 18and2/5=? You need to get the same denominator in the fractions. 2/5 = ? / 10 Then subtract the fractions and the whole numbers. If you post your answer, we'll be glad to check it for you. Raven: Please don't post your entire name on any website, or reveal ...

### Alg-Substitution (check plz)

k well i had to use substitution to find the point of intersection for these 2 equations x-y=10 3x+y=11 i chose to substitute y in the first equation my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd i make a mistake? In the first equation, y...

### dog behavior

please check answer thanks Modeling is a training technique that involves A. providing one dog as an example for another dog to follow B. giving positive reinforcement for correct behavior C. using dependent and independent variables in an experiment D. habituating a dog to a ...

### check my science hw please.

18. Which of the following would be a cost of drilling for oil in Antarctica? A. The supply of heating fuel would be increased. B.There would be a greater opportunity to study wildlife there. C. An oil spill could harm food sources for penguins. D. Many new jobs would be ...

### English

Choose the best word to describe labyrinths ...His clothes were in tatters, as if he had sailed through labyrinths of coral. A) Circular tunnels B) Blind alleys*** C) Colorful palaces D) Tide pools A labyrinth is a maze right? So is it B, blind alleys. Can someone please check...

### calculus

Jena. Stop it, or you will be banned. Using the chain rule, how do i solve this problem? g(x)=(sin3x)^3 g'(x)=?? 3sin(3x)^2 • 3 i think *w*w*w*.*a*s*k*.*c*o*m* hey i cant help but heres a hint just go 2 (go on the words w/ the stares around them )and ask the question *w*w*w...

### Calculus

I would like to know if my answers are correct: Disclaimer: We are allowed to keep our answers in formula form 1. Use the washer method to find the volume of the solid that is generated by rotating the plane region bounded by y=x^2 and y = 2-x^2 about the axis y=-1 My Work: [...

### Math Check

Let’s say you have a bedroom drawer that contains about 2 red socks, 4 white socks, and 8 blue socks. Without looking in the drawer, you pick out a sock, take it back, and then pick out a second sock. What could the probability be if the first sock is white and the second ...

### math

My homework tells me to divide the answer ,add the answer, and find the mixed fraction in the answer, but they don't tell me where I get the answer . What do I do? Surely there is more info. If not, you can't do it.

### Calculus 3! ASAP please

1.A given line is described by the system of equations x=2t+7; y=-3t+4; z=5-t; find the equation of a line parallel to the given line and which contains the point (1,1,0). 2.Let a=<0,6,2> and b=<0,2,4>, then the component of a parallel to b is given by? - the ...

### English

Why don't we go to the park together? 1. I don't feel like it. 2. I'm sorry,but I can't. 3. I'm sorry I can't. 4. Sorry I can't. 5. Sorry, but I can't. 6. I'm afraid I can't. 7. I'm afraid, but I can't. 8. Afraid I can't. 9. I'm afraid that I can't. ================== There ...

### Math - Could Someone Check My Work?

Could someone check my work please? Thank you! (14a^2b)(2ab^2c) = 28a^3b^3c (a^25)^7 = a^125 6x^6 ∙ 6x^6 = 36^12 (2x^2)^3 = 8x^6 (-2)0 = 1 30x^20/(6x^9 = 5x^11 4x^5 ∙ 6x^6 = 24x^11 (2x^4)^3 = 8x^12 -4^2 = -16 -(193)^0 = -1 (-193)0 = 1 (-5)2 = 25 ((6x^7)/(2x^2 ))^2...

### someone answer please

Tracy Migre, a certified public accounting, has completed the following transactions. Ms.Migres assests , liabilites, and owner equity account titles and balances are shown in the table below. use the table on the page to show the effect of each transaction. Transactions: 1)...

### calculus

Leave any unneeded answer spaces blank. [Hint: use synthetic division to solve.] f(x) = (1x^3 - 3x^2 - 25x + 75)/(1x^3 - 19x^2 + 118x - 240) the roots of f(x), in increasing order is/are.... ___, ___, ___ f(x) has holes when x is... ___, ___, ___ f(x)has vertical asymptotes ...

### calculus

5). Find the volume of the solid of revolution generated by rotating the graph of y=8 lnx about the y-axis between y=0 and y=16 Answer choices: 238.39pi, 246.39pi, 230.39pi, 214.39pi, 222.39pi 7). Find the area of the region bounded by y=√x-2, y=9, y=0, x=0

### Chemistry

What mass of KIO3 is needed to convert the copper in 0.200g of CuSO4.H2O to Cu(IO3)2? my answer is: 0.828g Cu(IO3)2 x (2*214.003 MolarM KIO3/ 413.36 MolarM Cu(IO3) = 0.857g KIO3 could you please check if i got it right

### Calculus

For which following condition, will the dot product of two vectors be zero? a) If the angle between them is 90°. b) If the angle between them is 0°. c) If the angle between them is 180° d) If the vectors have the same magnitude. Anyone know what the answer is?

### math check my answers please and thank you

select the answer that correctly orders the set of numbers from least to greatest 14% , 1/8 , 0.03 , 0.065 A. 14% 1/8 0.065 0.03 B. 0.065 0.03 1/8 14% C. 0.03 0.065 1/8 14%**** D. 0.03 0.065 14% 1/8 select the answer that correctly orders the set of numbers from greatest to ...

### Calculus c

Let f be a twice-differentiable function defined on the interval -1.2 less than or equal to x less than or equal to 3.2 with f(1)=2. The graph of f', the derivative of f, is shown on the right. The graph of f' crosses the x-axis at x=-1 and x=3 and has a horizontal tangent at ...

### mit

Two circular pucks, each of mass M and radius R, slide toward each other and are about to collide on frictionless ice. The pucks have glue on their edges and when they collide the pucks will stick together. Before the collision, the rightward-travelling puck has speed 2v and ...

### calculus

Water is being filled into a water tank at 22 liters/second. The base of the tank has dimensions w = 1 meter and L = 2 meter . What is the rate of change of the height of water in the tank? (express your answer in cm/sec).

### calculus

Water is being filled into a water tank at 22 liters/second. The base of the tank has dimensions w = 1 meter and L = 2 meter . What is the rate of change of the height of water in the tank? (express your answer in cm/sec).

### calculus

6) The function f(x)=4x3−18x2−480x−2 is decreasing on the interval ? Enter your answer using the interval notation for open intervals. It is increasing on the interval(s) ? The function has a local maximum at ?

### Algebra 1 (Reiny)

1Simplify the quotient (6.4 x 10^9) / (1.6 x 10^-3). Write the answer in scientific notation. My answer: 4 x 10^6? Simplify. 2. a^16/a^4 My answer: a^12? 3. (4y^6/x^3)^2 My answer: b^15/8?

### English

Could you check this? Complete the questions. I wrote my answers with capital 1. Researchers are SUPPOSED TO BE VERY careful when working in the lab. 2. They ARE SUPPOSED TO CHECK and recheck dangerous experiments. 3. They are SUPPOSED TO THINK before acting impulsively. 4. ...

### Math - hw check

The admission fee for student is $8 and the admission fee for Adult is $15. In one hour, 12 adults and students enter the museum and a Total of $131 in admission was paid. Write a linear system to model this problem and solve this problem graphically. Check you answer by ...

### English

2. Choose the term that describes the underlined part of the sentence. Although it was raining fairly hard, the team played its best game ever. (1 point) noun clause adjective clause adverb clause independent clause My Answer: "noun clause" Can someone please check it?

### Edtech

How can netiquette help you communicate when texting or instant messaging? Netiquette will help you type faster. Netiquette is a list of all acceptable acronyms when texting.*** Using netiquette can help you avoid misspellings. Using netiquette can help prevent ...

### Math

There are 20 teachers and 705 students in Corey's school. What is the ratio of teachers to students? Answers: A. 4/141 B. 141/4 C. 5/141 D. 141/5 My Answer: A: 4/141 Please check if I am right. Thanks!

### Pre-Calculus

For a boat to float in a tidal bay, the water must be at least 2.5 meters deep. The depth of the water around the boat, d(t), in meters, where t is measured in hours since midnight, is d(t)=5+4.6sin(0.5t) Use three decimal places in all intermediate calculations. (a) What is ...

### pre-calculus

I'm trying to describe how the graph is related to the parent function. The parent function is x^3 and the problem is: y=-(0.8x)^3 I know its a reflection over the x-axis, but what is the formula for how much it expands or shrinks? Like on another problem it's y=|x| and y= |0....

### Word Problem-Calculus

A spherical balloon is being inflated in such a way that its radius increases at a rate of 3 cm/min. If the volume of the balloon is 0 at time 0, at what rate is the volume increasing after 5 minutes? my answer is 45 cm/min. is this right. thanks

### PLEASE HELP BEEN STUCK ALL DAY CALCULUS

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer.

### social

Which of these were the two great West African trading kingdoms that arose between 1200 and 1400? a- Zimbabwe and Mali b- Mali and Swahili c- Songhai and Zimbabwe d- Mali and Sonhai Please check this site for the answer. http://regentsprep.org/Regents/global/themes/goldenages/...

### Calculus

Find the absolute maximum value and the absolute minimum value, if any, of the function. (If an answer does not exist, enter DNE.) f(x) = −x2 + 2x + 3 on [3, 6] maximum minimum

### physics - please check my answer?

Consider a block of copper that is a rectangular prism (a box) with sides 15 cm by 20 cm by 50 cm. The resistivity of copper is 1.68e-8. If you consider the resistances between the three sets of parallel faces, which has the middle value? A. The resistance between the 15 x 20 ...

### calculus-add

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks 2) (a)find the general solution of the equation (x-2)dy/dx+3y(x-1)/(x+1)=1 b)given the boundary condition y=5 when x=-1,find the particular solution of the condition given in (a) a little help would do thanks i ...

### check my answer plz

Lynn’s teacher likes to give lectures and rarely uses the overhead or chalkboard to illustrate her points. Lynn is struggling in this teacher’s class. What is least likely Lynn’s preferred style of learning? A. visual B. musical C. kinesthetic D. auditory Auditory

### Spanish

Which of the following is NOT a difference between schools in Puerto Rico and schools in Los Estados Unidos? A. Classes are conducted in spanish B. Students wear uniforms*** C. There are homeschooling options D. Students study both Spanish and English Can some one help to ...

### Math , check my answer ?

Lynne invested $35,000 into an account earning 4% annual interest compounded quarterly. She makes no other deposits into the account and does not withdraw any money. What is the balance of Lynne's account in 5 years? $37,153.21 $39,438.88 $42,706.65 <my choice $56,295.30

### English

1. You can check prices for bicycles on the Internet. 2. You can check prices about bicycles on the Internet. -------------- Can we use 'for' and 'about' in the sentence? Which preposition is commonly used? Can we use some other expressions for 'for? Concerning, regarding...

### Grammar (Last one :) )

Except for Ronnie and _____, everyone was on time. him(my answer) he Between you and _____, I know the answer to the mystery. I me(my answer) Leave your message with Ms. Horioka and _____. me(my answer) I It was Geraldine Ferraro _______ ran for vice president in 1984. who(my ...

### dog behavior

please check my answer thanks so much :) Which one of the following commands is most like a safety net for a dog? A. Controlled walking B. Leave it C. Heel D. Emergency down I am not sure At first I think it would be B because it would stop the dog from maybe eating something ...

### U.S History - pls check my answer :)

Document E: HOUSE OF REPRESENTATIVES vote on whether to declare war against Britain STATE YEAS NAYS NORTH N.H. 3 2 MASS. 2 12 R.I. 0 2 VERMONT 3 1 CONN. 0 7 MIDDLE N.Y. 7 8 N.J. 2 4 PA. 9 11 DEL. 0 1 MD. 6 3 SOUTH VA. 14 5 N.C. 6 3 S.C. 8 0 GA 3 0 KY. 5 0 TENN. 3 0 OHIO 1 0 ...

### Algebra

Please confirm if I did the follow problems correctly: A) Find the sum or difference. (5a – 3b) + (2a + 6b)= 7a + 9b Answer: = 7a + 9b B) Let’s work a few of these (FOIL) 1) (x+2) (x+8) = x 10 Answer: x10 2.) (x+5) (x-7) = x + 11 Answer: x + 11 3.) (2x+4) (2x-3) = 4x + 7 ...

### Algrebra

Please confirm if I did the follow problems correctly: A) Find the sum or difference. (5a – 3b) + (2a + 6b)= 7a + 9b Answer: = 7a + 9b B) Let’s work a few of these (FOIL) 1) (x+2) (x+8) = x 10 Answer: x10 2.) (x+5) (x-7) = x + 11 Answer: x + 11 3.) (2x+4) (2x-3) = 4x + 7 ...

### English composition

I bought a pedometer on the Auction site on-line, so I can measure my steps. If I walk for 10,000 steps a day, it will be helpful for my health. This product was made in China, and it is 1,500 won. It is inexpensive. Because I can check how many steps I can walk, it will be ...

### math

Peter received a six month post dated check for Php 100,000.00.(The check can only be cashed after six months.) He offers it to his friend for Php 92,000.00. His friend's money is presently earning 10% compouunded monthly. If there is 20% withholdingtax on interest, which is ...

### math

This is for Ms. Sue ! 0.002,1/4,0.20,1/5 my answer 1/5 and 0.20 7/20,6/20,3.5,0.35 my answer 3.5 0.008,0.08,2/25,1/12 my answer 0.08 14%,1/8 , 0.065, 0.03 0.065, 0.03,1/8 , 14% 0.03, 0.065, 1/8 , 14%, my answer C 0.03, 0.065, 14%, 1/8 7/14,2/5 , 32%, 0.25 7/14, 0.25, 32%, 2/5 ...

### Science 8 - Check Answers

Please Check Answers. 4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion * B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor conductor of electricity. This material would most ...

### English

put an (*) next to the answer I chose. Not asking anyone to do my work for me; just want a double check. I'm a little unsure since I picked the same term for each answer :) Read the following sentence from "In Another Country" and choose the word below that describes the tone ...

### English

"Mental distance" from a rough draft can be achieved by: A. waiting 24 hours before revising B. revising in a different place from where you have finished your revisions C. not sharing your draft until you have finished the revisions D. Using a computer spell-check and grammar...

### calculus

Use a graphing utility to graph the function and find the absolute extrema of the function on the given interval. (Round your answers to three decimal places. If an answer does not exist, enter DNE.) f(x) = x^4 − 2x^3 + x + 1, [−1,3] minima (x, y) = (smaller x-...

### calculus

Chocolate Box Company is going to make open-topped boxes out of 7 × 11-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to one decimal place.)

### math 012 double check me please

9x+3(x-4)=10(x-5)+7 9x+3x-12=10x-50+7 12x-12=10x-43 subtract -12 from both sides and that leaves -12=-2x-43 add 43 to both sides and that leaves 31=2x then the answer is x=31/2 (a fraction) im so confused and its even harder trying to type it out and not confuse anyone reading...

### chemistry

please check my answer(one with star). The solubility of borax is directly proportional to temperature. Therefore, the sign of H is A. negative* B. positive C. unknown with the given information since solubility shifts the reaction to the right, therefore it is exothermic so H...

### Chemistry Check Please!!!

Using a table of standard electrode potentials (as in Appendix M of your text), calculate the standard cell potential, Eo, for: 2 Fe2+(aq) + Cl2(g) 2 Fe3+(aq) + 2 Cl(aq). Answer: Anode: 2 Fe2+ 2 Fe3+ + 2 e Eox = 0.771 V Cathode: Cl2 + 2 e 2 Cl Ered = +1.36 V Enet = +0.59 V

### science (check please (:)

8.Which of the following would help decrease the human ecological footprint? . . . . . . . . . . . . . . . My answer: using public transportation instead of riding in a car? (I have doubts on my choice) but my other choice is using bottled water instead of tap water?

### chemistry (WEBWORK)

Use the labels (CV+, –OH, CVOH, , Ea (activation energy), & G) to complete the reaction potential energy profile below. More than one answer is possible for some spots. a. (Use i, ii, iv, etc. for your answer) b. (Use i, ii, iv, etc. for your answer) c. (Use i, ii, iv, etc. ...

### Ap human geo

Umm this isn't really a question, it's actually a thank you to Ms. Sue for answering my question. Although it was not direct and you made me think, ugh, I figured it out!!!! I did not check until today the 25 of May bcause no other website has given me an answer so fast, not ...

### geography

Will you please check my answers? 1.What states border Lake Michigan? Wisconsin, Illinois, Indiana, and Michigan 2. How many states are on the 60 degrees N line of latitude? Just one state ( Alaska ) 3. What do the following countries have in common: Chad, Paraguay, Hungary, ...

### Science 7R - HW Qs. Check!

16. Coaches advise athletes to warm up or exercise a few minutes before beginning a sports activity. Explain why warming up is important. My Answer - Warming up helps reduce our risk of injury and the aches and pains that come with exercise. It also prepares your muscles for ...

### math

Can someone please check my answers and help me with the last question! 1. Solve sin2xcos2x = 4sin2x on the interval [0, 2pi] 0, pi, 2pi? 2. Exact value of sin(pi/12) - sin(5pi/12) root3/4? 3. Using factorial notation, 0! = 1 False? 4. Find the area of the following triangle. ...

### @Help plzz check asap

I've removed the entire test you posted -- without indicating your answers! Please post only those questions you have serious doubts about along with what YOU THINK the answer is for each. Then when someone comes online who has read that work, he/she may be able to help. Do ...

### Geometry

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...

### chem

a.)How many moles of NaOH are required to prepare 2.00L od 0.380M solution? answer is 0.760 mole of NaOH (mole/l * 2.00L) b.)What will be the molarity of a solution if 3.50 g of KOH are dissolved in water to make 150.0 mL of solution? answer is 0.52 M KOH (gKOH/molar mass KOH=...

### math (check answer)

You want to know the number of students in your school that have a January birthday. You survey the students in your math class. Three students have a January birthday, and 32 do not. So, you conclude that about 8.6% of the students in your school have a January birthday. ...

### science (check answer?)

What does aluminum, germanium, and polonium have in common? A. They are gases. B. They have properties of metals and nonmetals. C. They are all metals. D. They have the same properties as the noble gases in the last column. (I think its B.)

### HS Calculus

1) Limit theta approaching zero sin squared theta/ tan theta 2) Lim x appraoches zero x + sin x/x x + sin x/x = x/x + sinx/x 0 + 1 =1 My answer : 1 Is this correct

### HS Calculus

1) Limit theta approaching zero sin squared theta/ tan theta 2) Lim x appraoches zero x + sin x/x x + sin x/x = x/x + sinx/x 0 + 1 =1 My answer : 1 Is this correct

### Calculus

Estimate the area under the graph f(x)=3x^3 + 5 from x=-1 to x=5 using 12 mid points? I got the right answer for using 6 mid points but what mid points would I use for 12?

### pre calculus

find 2 solutions of tan θ=.6524 in both degrees and radians. I know the answer are 33.12 degrees/.578 radians and 213.12 degrees/3.72 radians, but how do you find this? Thanks!!!!