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Posts by Tony

Total # Posts: 960

Math
2/5 of 5 is 2, so 5-2=3 left

Calculus II
1.125

math
235/99

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

heeeeeeeeeeeeeelp Physics
Finally 0.572 is correct

MATHS
Already answered. 21^2=441

geometry
81

Geometry
39

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) ?

Algebra
468

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

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) ?

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 ?

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 ?

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

Math (Algebra)
31

chemistry
which melts at a low temp in a solid nonelectrolyte what type of solid is it

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

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

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 ?

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

maths
53

Logarithms
if loga(b)=1/48 what is the value of logb(a^2) ?

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 ?

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 ?

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

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...

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

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 ...

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

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

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?

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

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

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

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

Please help science
Most organisms reproduce: Sexually Asexually By meiosis Is it asexually or sexually not sure I think it is asexually though

Science
Most organisms reproduce: A. Sexual B. asexual C. By meiosis Is it b not sure between b and a

Science
Most microrganisms reproduce: A. Sexually B. asexually C. By meiosis A or B not sure

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...

7th Grade Social Studies
thks Angel i got a 100%

maths
perpendicular avenue is perpendicular to tangent street and passes through D(17,8).find its equation

English
The a in the word saving sounds like A. Ape B. pat C. Heated D. Naughty Is it a

statistics
I did not change names I have two children in college and they had different questions ask before you blame

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.

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?

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 ...

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&...

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

Integrals
Evaluate è R xy dA , where R is the region bounded by x^2 +y^2 <=16 , x>=0 and y>=0

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 ?

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

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 ...

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?

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...

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?

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

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

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?

algebra 1A
correction the pair are (-2,-11) and (-20,-15).

algebra 1A
find the slope, if it exists,of the line containing the pair of the points. (-2,-1) and (-20,-15).

fractions
stupid and thanks you a******

Math
a+p =5 p 11/4 >a

Math
2k+7=5k-k

Math
2k+7=5k-k

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 ...

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

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.

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?

Algebra 1- Math
how do u solve 3x=y-5

Algebra 1- Math
what has the same slope but different y-intercept?

Math
Now-Next minus a negative 2

Algebra 1- Math
Can anyone please show me and explain how to solve 9x+2=3y? Thanks,Bye.

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°

science
The Sun.

physics
acceleration = force / mass A = 500/ 2000 a = 0.25 m/s/s

physics
calculate the acceleration of a 2000-kg single air plane just before takeoff when the thrust of its engine is 500 N

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 ...

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

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????

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 ...

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

Probability PLEASE CHECK
What is the probability of a game being sold if 18,980,000 of that title was sold out of a total 68320,000 different video games Is it 19,989,000/68320,000 1890/6832 = 27.77% rounded to nearest tenth

Math-truth table, please check my work!
p -> ~q , p -> q Are these Equivalent statements? This is my try. Please let me know if these truth tables are correct. p -> ~q p q p -> ~q p q p -> q T T T T T T T F T T F F F T F F T F F F T F F T The statements are not equivalent.

Cosmology
Mass-energy curves space-time

Cosmology
Using large spectroscopic redshift surveys

Math-Syllogism valid?
Some snakes are poisonous. A rattlesnake is a snake. Therefore: a rattlesnake is poisonous. Is syllogism valid or invalid?

math-Tiling a room
How much does it cost to tile a room that is 420 sqft if the tiles used are 1 foot on a side and cost $0.95?

statistics-expected value
100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is the expected value of her ticket? What is the fair value of a ticket?

math
100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is her expectation? What is the fair value of a ticket?

math
4y X 4y = 16y squared

math - expected value and fair price
one hundred raffle tickets are sold for $3 each. one prize of $200 is to be rewarded.Lisa purchases one ticket. a- what is her expected value b- what is the fair price for a ticket?

Statistic- Average
A mean average of 60 on 6 exams is needed to pass a course. on his first 5 exams, Adam received grades of 46,73,73,63 and 70. If the lowest grade of the exams already taken is to be dropped, what grade must he receive on his last exam to get a C in the Course?

solve for x with inequality
(387-46)+x/6=> or = to 70 (341)+x = or > than 70

algebra
(387-46)+x/6=> or = to 70

statistics
A license plate is to have 3 digits followed by 2 uppercase letters. What is the number of different license plates possible if repetition of numbers and letters is not permitted?

statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

statistics-?mean average with lowest number out?
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

math
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?

math
how many different committees can be formed from 6 teachers and 31 students if the committee consists of 4 teachers and 4 students?

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