Tuesday

September 1, 2015
Total # Posts: 872

**trig**

Find cos(A+B). cos A=1/3 and sin B=-1/2, with A in quadrant I and B in quadrant IV.
*June 16, 2013*

**Trigonometry**

In a triangle ABC, if 2sinB=sinA+sinC and sides a+c=70, what is side b?
*June 16, 2013*

**trig**

for the given angle, name the quadrant in whihc the terminal side lies. -350deg
*June 12, 2013*

**trig**

identify the quadrant in which 0 lies. sin < 0 and sec > 0
*June 12, 2013*

**trig**

determine the period of the function. y = cot 4t
*June 12, 2013*

**trig**

Identify the quadrant in which θ lies. sin > 0 and tan < 0
*June 11, 2013*

**trig**

Find the trigonometric function value of angle θ. Cos θ = 2/7 and θ is in quadrant IV. Find sin θ.
*June 11, 2013*

**trig**

The point (-3, 4) is on the terminal side of angle θ in standard position. Find cot θ.
*June 11, 2013*

**trig**

Given that θ is an angle in standard position whose terminal side contains the given point, provide the exact value of the indicated function. (-2, -3) Find sec θ.
*June 11, 2013*

**Polynomials**

The polynomial P(x)=ax^3+bx^2+cx+d leaves a remainder of 10x+11 when it is divided by x^2−1. It leaves a remainder of −6 when it is divided by x^2+x+1. What is the value of bc−ad
*May 24, 2013*

**Complex numbers**

If f(x) is a polynomial with real coefficients such that f(4+3i)=31+16i, then f(4−3i)=a+bi. What is the value of a+b
*May 24, 2013*

**Maths**

thank you very much
*May 23, 2013*

**Maths**

A and B are real numbers such that the two quadratic equations 19x^2+3x+2=0 and Ax^2+Bx+7=0 have a common root. What is the value of A+B
*May 23, 2013*

**Trigonometry**

What is the maximum integer value of x, where x<200, that satisfies the following inequalities: sin(90+180x/100)<0 and tan(180−180x/100)<0 ?
*May 23, 2013*

**Algebra**

you mean 527. Thanks a lot
*May 23, 2013*

**Algebra**

f(x)is a monic cubic polynomial with real coefficients. f(x) has 7+4i as a root and f(0)=−2145 . What is the coefficient of x in f(x) ?
*May 23, 2013*

**Maths**

The roots of the polynomial f(x)=7x^2 +38x+c=0 are reciprocals of each other. What is the value of c ?
*May 22, 2013*

**MATHS**

558
*May 21, 2013*

**Math- 5th grade**

1/60
*May 21, 2013*

**Math**

2/5 of 5 is 2, so 5-2=3 left
*May 21, 2013*

**Calculus II**

1.125
*May 20, 2013*

**math**

235/99
*May 20, 2013*

**Maths**

How many rational numbers in the interval (0,1) , when expressed in lowest terms, have denominators less than or equal to 10
*May 20, 2013*

**heeeeeeeeeeeeeelp Physics**

Finally 0.572 is correct
*May 20, 2013*

**MATHS**

Already answered. 21^2=441
*May 17, 2013*

**Calculus**

If polynomial functions f(x) and g(x) satisfy d/dx {f(x)g(x)}=2x , f(0)=−3 , and g(0)=3,what is f(10)g(10) ?
*May 13, 2013*

**Algebra**

468
*May 6, 2013*

**Algebra**

What is the sum of all possible integer values of x such that (x^2−35x+305)^(x^2−42x+416)=1?
*May 4, 2013*

**Trigonometry**

f(x)=105sin(kx+m) , for some real numbers k and m , and g(x)=f(x)/5. What is the maximum value of g(x) ?
*May 4, 2013*

**Algebra**

If a is a real number and a cubic equation f(x)=x^3−12x^2+(a+20)x−2a has a repeated root, what is the sum of all the possible values of a ?
*May 4, 2013*

**Algebra**

What is the smallest possible positive integer x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77 ?
*May 4, 2013*

**Algebra**

How many distinct rational numbers can be expressed in the form a/b, where a and b are integers such that 1<=a<b<=10
*May 4, 2013*

**chemistry**

which melts at a low temp in a solid nonelectrolyte what type of solid is it
*April 23, 2013*

**Trigonometry**

Given that cos(3x)=acos^3(x)−bcos(x) is a trigonometric identity, what is the value of a+b
*April 23, 2013*

**Trigonometry**

Given that cos(3x)=acos^x−bcosx is a trigonometric identity, what is the value of a+b ?
*April 23, 2013*

**Trigonometry**

If sinx−cosx=1/2 then cot^2 (2x)=a/ b, where a and b are coprime positive integers. What is the value of a+b ?
*April 23, 2013*

**Numbers**

How many positive integers less than or equal to 1000 are common multiples of the three numbers 8,100, and 40
*April 23, 2013*

**Logarithms**

if loga(b)=1/48 what is the value of logb(a^2) ?
*April 22, 2013*

**calculus**

If x=t^3 and y=3t^5, where t is any real number, what is the derivative of y with respect to x at x=125 ?
*April 20, 2013*

**Algebra**

If the sum of 3 non-zero distinct real numbers a, b and c is 2 , and the two sets {a,b,c} and {1/a ,1/b ,1/c} are the same, what is the value of a^2 +b^2 +c^2 ?
*April 20, 2013*

**Trigonometry**

Given that tan84=T , how many solutions are there to tanx=T in the domain [0,1000] ?
*April 19, 2013*

**Trigonometry**

Let O be the origin and P be a point in the fourth quadrant on the x-y plane. Let 270<z<360 be the angle formed by OP with the positive x-axis. Similarly Q is a point in the fourth quadrant on the x-y plane where |OQ|=|OP| and the angle formed by OQ and the x-axis is 7z...
*April 19, 2013*

**Algebra**

Let S be the sum of all values of r such that the coefficient of the x^2 term in the expansion of (x−3)(rx+2)^3 is −6 . If S=a/b, where a and b are coprime positive integers, what is the value of a+b
*April 19, 2013*

**P&P**

Peter is walking from the library to school at a rate of 40 meters per minute. At the same time, Paul is walking from school to the library. After they meet each other, Peter still needs 6 minutes to get to school, while Paul is 200 meters away from the library. What is the ...
*April 19, 2013*

**Ratios**

If the ratio of x+y to x−y is 279/262 , then the ratio of y to x can be written as a/b where a and b are coprime positive integers. Find a+b
*April 19, 2013*

**Numbers**

What is the smallest possible natural number x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77
*April 19, 2013*

**Maths**

There are two complex roots to the quadratic equation z^2 +(1−16i)z+(−80+10i)=0 . What is the value of the larger of the two norms of the two roots?
*April 19, 2013*

**Math**

Find the sum of all primes q<1000 such that for some prime p<q , both q divides p^3 -1 and p divides q^3 -1
*April 19, 2013*

**Calculus**

p'(53) = (-.009)(20.6)e^(-.009(53)) = -.1854e^((-.477) = -.1854 * .62064 = -.115067 = -.115067 * 100 = -11.5067 % change in relocation rate
*April 9, 2013*

**physics**

A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
*April 8, 2013*

**physics**

A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
*April 8, 2013*

**Please help science **

Most organisms reproduce: Sexually Asexually By meiosis Is it asexually or sexually not sure I think it is asexually though
*April 8, 2013*

**Science **

Most organisms reproduce: A. Sexual B. asexual C. By meiosis Is it b not sure between b and a
*April 8, 2013*

**Science**

Most microrganisms reproduce: A. Sexually B. asexually C. By meiosis A or B not sure
*April 8, 2013*

**Math**

A study determines that 60% of the voters in a town intend to vote for the incumbent mayor. If a sample of 8 people is selected, using the binomial formula, what is the approximate probability that 6 of the 8 people surveyed intend to vote for the incumbent? A. 0.47 B. 1.28 C...
*April 6, 2013*

**maths**

perpendicular avenue is perpendicular to tangent street and passes through D(17,8).find its equation
*March 29, 2013*

**English**

The a in the word saving sounds like A. Ape B. pat C. Heated D. Naughty Is it a
*March 26, 2013*

**statistics**

I did not change names I have two children in college and they had different questions ask before you blame
*March 17, 2013*

**statistics**

The average age of a vehicle registered in the United States is 8 years, or 96 months. Assume the standard deviation is 16 months. If a random sample of a group of 48 vehicles is selected find the probability that the mean of the group’s age is between 90 and 100 months.
*March 17, 2013*

**statistics**

The amount that airlines speed on food per passenger is normally distributed with means $8.00 and standard deviation $2.00. What is the probability that a randomly selected airline spends more than $12.50?
*March 17, 2013*

**Program Logic Design**

The Chocolate Delights Candy Company needs to add the following functionality to its cash register: When a customer is checking out, the cash register needs to store the required data pertaining to each item the customer is buying. This data includes the item name, the price ...
*March 13, 2013*

**Quantum Physics**

Alice and Bob share a state a| + +> + b |- -> , where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants his qubit to end up in the state a |0> + b |1&...
*March 12, 2013*

**Calculus**

Evaluate [double intergal (R xy dA)] , where R is the region bounded by x^2 +y^2 <=16 , x>=0 and y>=0
*March 12, 2013*

**Integrals**

Evaluate è R xy dA , where R is the region bounded by x^2 +y^2 <=16 , x>=0 and y>=0
*March 12, 2013*

**Geometry**

ABC is a triangle with area equal to 20 . The incircle of triangle ABC has radius equal to 2 and the circumcircle of triangle ABC has radius equal to 6 . If sinA+sinB+sinC=a/b , where a and b are coprime positive integers, what is the value of a+b ?
*March 11, 2013*

**Geometry**

ƒ¡ is a circle with center O . A and B are points on ƒ¡ such that the sector AOB has perimeter 40 . What is the measure of ÚAOB (in radians) when the area of the sector AOB is maximized
*March 11, 2013*

**Trigonometry**

Let è be the angle between the x-axis and the line connecting the origin O(0,0) and the point P(−3,−4) , where 180<è<270. Given that sinè+cosè+tanè=−a/b, where a and b are coprime positive integers. What is the value ...
*March 11, 2013*

**MEchanics M-1 (Velovity time graphs)**

A dragonfly, at rest on a bullrush, decides to fly to a second bullrush 18 m away. It accelerates uniformly to a speed of. 5 m s-1, then immediately decelerates uniformly to rest on the second bulrish. Howlong the journey took?
*March 9, 2013*

**Physics**

We use a wrench to turn nuts on bolts because they require less force. Consider a hexagonal nut 1 cm in diameter. We can tighten this nut with one of two wrenches, wrench A with lever arm 10 cm and wrench B with lever arm 20 cm. Both wrenches have a very small mass, so you may...
*March 6, 2013*

**Trigonometry**

Let S be the sum of all the possible values of sin x that satisfy the following equation: 5-2cos^2(x)-7sin(x) = 0 S can be written as a/b, where a and b are coprime positive integers. What is the value of a + b?
*March 6, 2013*

**Calculus**

The location of a dot P at a given time t in the x-y plane is given by (x,y) = (t - sin t, 1 - cos t). What is the distance traveled by P in the interval 0 <= t <= 2pi
*March 6, 2013*

**algera 1A**

I thought the formula i was suppose to use is y2-y1 x2-x1 which equals to (-15,- -11)and(-20,- -2) Then I got -4/-18 which equals to -2/-9
*March 5, 2013*

**algera 1A**

find the slope, if it exists,of the line containing the pair of the points. (-2,-11) and (-20,-15). I came up with (-2,-9)is this correct?
*March 5, 2013*

**algebra 1A**

correction the pair are (-2,-11) and (-20,-15).
*March 5, 2013*

**algebra 1A**

find the slope, if it exists,of the line containing the pair of the points. (-2,-1) and (-20,-15).
*March 5, 2013*

**fractions**

stupid and thanks you a******
*February 26, 2013*

**Math**

a+p =5 p 11/4 >a
*February 24, 2013*

**Math**

2k+7=5k-k
*February 19, 2013*

**Math**

2k+7=5k-k
*February 19, 2013*

**Physics**

In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's image on the ...
*February 16, 2013*

**Help please edu.**

Young children with autism: A. Will never talk B. relate to people differently than typical children do C. get along better with older children D. like changes in their routine I think B am I correct
*February 14, 2013*

**Phsics**

What is the terminal speed for an 77.0kg skier going down a 44.0 degrees snow-covered slope on wooden skis uk= 0.060? Assume that the skier is 1.70m tall and 0.300m wide.
*February 14, 2013*

**Algebra 1- Math**

The sum of a smaller number and twice a larger number is 67. If the smaller number is increased by 5, the sum will equal the larger number. Find the numbers. A rectangles width is four more than twice its length. Its perimeter is 62. Find the dimension of the rectangle?
*February 6, 2013*

**Algebra 1- Math**

how do u solve 3x=y-5
*February 6, 2013*

**Algebra 1- Math**

what has the same slope but different y-intercept?
*February 6, 2013*

**Math**

Now-Next minus a negative 2
*February 5, 2013*

**Algebra 1- Math**

Can anyone please show me and explain how to solve 9x+2=3y? Thanks,Bye.
*February 5, 2013*

**Physics**

6.7²/(2g) + 9.1 = 11.39 m b) t = 2√[2H/g] = 3.05 sec; X = 6.6*t = 20.125 m c) Vf = (6.6i - 6.7j) m/s d) Θ = arctan[j/i] = arctan[-6.7/6.6] = -45.43°
*February 5, 2013*

**science**

The Sun.
*February 5, 2013*

**physics**

acceleration = force / mass A = 500/ 2000 a = 0.25 m/s/s
*February 5, 2013*

**physics**

calculate the acceleration of a 2000-kg single air plane just before takeoff when the thrust of its engine is 500 N
*February 5, 2013*

**physics**

A compact car, mass 875 kg, moving south at 16 m/s, is struck by a full-sized car, mass 1660 kg, moving east at 12 m/s. The two cars stick together, and momentum is conserved in the collision. The wreck skids along the ground and comes to a stop. The coefficient of kinetic ...
*February 4, 2013*

**chemistry**

1.00 g zinc and 0.80 g sulfur are allowed to react all the zinc is used up 1.50 g of zinc sulfide is formed and some unreacted sulfur remains what is the mass of unreacted sulfur
*February 3, 2013*

**Help please**

Number the items to show the most effective and the least effective to use to scratch the mineral to test its hardness. Use number 1 for the most effective and the 4 for the least efective. Chalk(1) Fingernail(2) Steel screw(4) Paper clip(3) Am I correct????
*January 28, 2013*

**Help please**

According to the textbook,an individual's most. Important decision that will effect the climate is: a. The choice to unplug an extra freezer that is rarely used b. looking for the energy star on new appliances c. Selecting a fuel efficient automobile d. Planting a tree I ...
*January 18, 2013*

**math**

if jay eats 1/3 of jelly beans and jack 1/4 of the jelly bean leveing bill with 10 jelly bean how many were there to start with
*January 18, 2013*