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math
Short projectile motion question A German rocket from the second world war had a range of 3000meters reaching a maximum height of 1000meters. Determine the rockets maximum velocity
math
A balloon in the shape of a sphere is deflating. Given that t represents the time, in minutes, since it began losing air, the radius of the ballon (in cem) is r(t)=16-t. Let the equation V(r)= 4/3 pi r^3 represent the volume of a sphere of radius r. Find (V (open dot) r)(t)
maths
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)²+(y-5)²+(z-2)²=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)²+(y-5)²+(z-2)²=19.53 (b) C(0,...
maths
The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2) Please help!!! Thanks!
Math
How would I find the formual of power function out of these 2 point? (5,75)(10,600)
math
Hey I need some help with this problem. Any ideas on how to solve it? Thanks lots. : A hardware supplier manufactures three kinds of clamps, types A, B and C. Production restrictions require them to make 10 units more type C clamps than the total of the other types and twice a...
math
one side of a right triangle has 2cm less than the hypothuse, and 7cm more than the third side what is the lenghnt of each side
math
A TV reporter said that twice as many woodlands were lost this year to fire than in the preceding year. He claimed this was an increase of 200%. Was he correct?
Math 10th grade
five marbles in a jar are green. the odds against choosing a green marble are "4:1" how many marbles are in the jar
math
How many liters are in 200 milliliters
math
What is the least common denominator of the rational expressions x-1/x^2+8x+7 and -3/x^2+x
Math
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
Math
How do I show 33/100 = 1/3, step by step?
Math
How do you show 33/100 as a reduced fraction? The answer choice is suppose to be approximately.
math
A landscaping company sells 40-pound bags of top soil. The actual weight x of a bag, however, may differ from the advertised weight by as much as 0.75 pound. Write an inequality involving absolute value that expresses the relationship between the actual weight x of a bag and 4...
Math
Greg is opening a car wash. He estimates his cost equation as C= 5000 +0.05x and his revenue equation as where R=1.9x is the number of cars washed in a six-month period. Find the number of cars that must be washed in a six-month period for Greg to make a profit.
math
You roll 2 six-sided dice. Give the probability of rolling the total 2.
College Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
math214
Find 28° 29’ 46” - 16° 48’ 59’’
Math
solve the polynomial equation (x+5)(x+1)=45
math
Write the probability as a decimal,percent and fraction. C) has a "50-50" chance D) will happen about 3 times out of 4 E) has 2 chances in 3 of happening C)0.5,50%,50/N D)0.75,75%,3/4 E)0.66,66%,2/3 Thanks!:) PsyDAG Is my Answer correct?
Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the i...
Math (Analysis)
Suppose that A has exactly three elements and B has exactly two. How many different functions are there from A to B? How many of these are injective? How many are surjective?
math
Geral and michelle went on a 24 bike-ride. By lunch time they had ridden 5 eigth of the total distance. How many miles did they have left to ride after lunch?
Math!
Pls help me on this, i dunno the answer but i got the answer of my own, but its wrong nad this paper is already marked, but i still cant seem to understand how to solve this! A furniture store bought an item for $810 less 15%. The store's expenses are 38% of the cost and t...
Math!
A store receive an invoice for $1773.75 dated January 23 with terms 3/10, 1.5/25, n/45. a) What is the balance after a payment of $1250 on Februray 2? 1250/(1-.03)=1288.66 1288.66-1773.75=485.09 Answer for (a)$485.09 b) What additional payment on February 17 will settle the in...
Math (Geometry)
A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
math_pre-calc
Find the equation of a circle that passes through the points (6,3) ans (-4,-3) and whose center lies on the line y=2x-7
5th grade Math
A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
math (always)
if peter has 60 basball cards in his collection how many baseball football and basketball cards does he have? my answer was-20 baseball cards 10 football cards 10 basketball cards
Math 98 pre algebra
14 and 2/3 times 2 and 2/11 divided by 3 and 3/8. i got =234 and 1/4 am I correct and if not what is the answer?
math
peter bought a bag of candy. He gave away ten percent of the candy too his wife and the gave three pieces to meg. he gave one forth of what he had left to his friend joe and then ate half of the remaining 18 peaces of candy. How many pieces of candy were originally in the bag?
math 12 logarithms
I need to express log base 5 sqrt5 =0.5 in exponential form. Would it be 5^0.5 =sqrt5. I'm not really understanding this unit very well. Any explaination would be greatly appreciated.
math
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)²+(y-5)²+(z-2)²=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)²+(y-5)²+(z-2)²=19.53 (b) C(0,...
math 12 logarithms
How would I go about proving 1/log a +1/log a = 1/log base 100 a. Any help would be greatly appreciate. Thanks
Maths
The line r=(2,3,4)+µ(-1,0,3) and the point (6,0,2) form which plane: (a) r.(-1,0,3)=10 (b) r.(9,10,3)=60 (c) r.(2,3,4)=29 (d) r=(2,3,4)+µ(-1,0,3)+ù(6,0,2) Please help!!! Thanks!
math
Lydia Rise us building a terraium and needs to buy two sizes of gravel and soil to go in the bottom. The terraiun is 24 in longs, 14 in wide, and 15 in tall. A.The bottom layer is pea gravel and needs to be 2 inches deep. How many cubic inches will she need? B. The second laye...
TRIG MATH
If sin theta= -7/8, then the value of 1/cot theta in the interval 3pi/2<theta is? okay I've done this question twice. The 1st time I got -7/sqrt15 and the next time got sqrt15/7. Are either of these right or am I totally messed??? I've got myself confused.
Math
Find the slope, if it exists. 60x-40y+15=0. I'm stumped on this problem Could someone please help.? Thanks.
math
Let {xn} be a sequence converging to á.? Suppose the errors en = |xn – á| satisfy en+1< or = Men^2en -1 for some constant M>0. What can be said about the order of convergence?
Math
Three planes: x+y-2z=1 2x+z=y-4 -3x-y+z=-2 They intersect at: (a) (-2/5,5,9/5) (b) no common intersection (c) r=(5/3,-2/3,0)+&(1,5,3) (d) r=(0,-4,-5)+%(1,5,3) &/%=signs like alpha and beta, used in vector eqns Please help! I just can't get the answer to be/ressemble any of...
Math questions
What are some examples of regular polyhedra? What are some examples of other important polyhedra? What characteristics help you determine whether a polyhedron is regular or irregular? How can you check for symmetry and rotational symmetry of polyhedra?
Math
Hi I need help figuring out these to word problems. Tom has created a scale drawing of his property for use in designing a landscape plan. 1 in on is drawing corresponds to 12 ft. There is a pond that is 112 ft. long on his property. How long will it appear on the drawing? Rou...
Math
Show that Euler’s formula holds for the polyhedra described in A right pentagonal prism
Math
Which uppercase letters of the alphabet have rotational symmetry?
math2
Solve the problem. You traveled 189 miles on 7 gallons of gasoline. At this rate, how many gallons of gasoline would you need to travel 297 miles?
Math
Differentiate in terms of x: 1] y = cos^3 5x 2] y = sec^2 3x
Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area? Please help me find the COMPLETE dimenssion of the box.
math
What is the height of an equilateral triangle that has sides of length 1 cm?
Math
A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?
Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
Math
The function W(d) = 0.112d approximates the amount in centimeters of water that results from d cm of snow melting. find the amount of water that results from snow melting from depts of 15cm, 26 cm, 70 cm
Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
Math
Write an equation of the line containing the given point and parellel to the given line. (2,-6); 9x-5y=4
Math(Please check)
Complete the identity secQ - 1/secQ = secQ Is this correct?
Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
Chem hw!
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
12th grade math
What is the distance between the origin and the point (5, 12)? If necessary, round your answer to two decimal places.
math 156
Describe two different ways that you could represent the number 0.80.
math
The volume of a rectangular prism is 2x^3+5x^2+x-2. The height of the prism is 2x-1, and the length of the prism is x+2. Find the width of the prism.
math
point c (2,1) is the midpoint of line segment ab. Find the coordinates of points a and b if they are both on axes. explain and justify your reasoning
math 116
After solving a system of linear equations, how can you check your answer to determine whether it is correct? Demonstrate the process of checking an answer with an example.
Math
If I have ((square root of 13)+(6))^2 would it be factored as -((square root of 13)+(6))((square root of 13)-(6)) or -((square root of 13)+(6))((square root of 13)+(6)) ?
Math 30
If cos theta = -sin theta,then sin^2 theta is what?
Math
Three questions, what is -7 3/10 - -4 4/5? -1 5/9 x -2 1/7? -12 divided by 1/3? How do you solve them?
math
solve 2/3 + 4/6
math
Give the dimensions of a picture frame that is a golden rectangle.
math
A graphics designer wants to use a star-shaped polygon with 10 points and a point angle of 12 degrees. What should be the dent angle of this polygon?
Math
Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to least. Both times the same n umber was third in order.
Math - Calculus
Show that the equation log y = 1.54 - .008x - .658 log x is equivalent to y = 34.7 (1.0186)^(-x) * x^(-.658)
2nd grade
2nd grade math measurement
Math116
Solve by elimination 5r-3s=13 3r+5s=69
Math 6th
Why do eskimos wash their clothes out tide? (can only be 10 letters)
Math(Please help)
1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = sqrt 3 / 3 Am I correct? 2) Complete the identity tan^2Q - 3sinQtanQsecQ = -2tan^2Q Correct?
Math 30 Trig
For the equation 4 cos theta - sqrt12 =0, where 0< theta < or equal 2pi determine the measure of theta. One answer I got was 2pi/3, 4pi/3 and another time it totally different 5 pi/6, 7pi/6. Are either of these right if not HELP!
Math
Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why or why not?
Math(Please help)
1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = sqrt 3 / 3 Am I correct? 2) Complete the identity tan^2Q - 3sinQtanQsecQ = -2tan^2Q Correct?
Math
Solve the proportion x-4/9=x/18
math
4 times the sum of a and b
Mathtoo
what is the least common denominator of 3/5+1/3
Math
A juice mix requires the addition of 32 oz of water for every 12 oz of juice concentrate. How much juice mix may be made from 15 oz of concentrate?
Math
Consider the equation below. (Give your answers correct to two decimal places.) f(x) = 8sin(x) + 8cos(x) 0 ≤ x ≤ 2 (a) Find the intervals on which f is increasing. (Enter the interval that contains smaller numbers first.) ( , ) union ( , ) Find the interval on whic...
Math
Simplify: 1-m ——— m ————— m-1 — m
math
A $5,000 loan is offered for 18 months at 7.50% compounded quarterly. For full marks your answer(s) should be rounded to the nearest cent.
Math 157
five numbers are to be picked, without repetition from 44 numbers to determine the winner of the fortune five game in the state lottery. If the order of the numbers is insignificant how many different ways can a winning quintuple be seleted? what is the probability of winning?
math
josh buys concert tickets worth $180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of $36, after selling all the tickets. what was the original ticket price? howmuch people bought the ticket?
math
Short math quadractic equation word problem*best answer? josh buys concert tickets worth $180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of $36, after selling all the tickets. what was the original ticket price?
Math
Write 0.36 as a fraction.
Math
Two cards are drawn at random from a standard deck of 52 cards. What is the probability that both cards are queens?
Math
Find the first three iterates of the function f(x)=x^2-2,if the initial value is -2.
math logic
A group of five students needs to break into two smaller groups in order to tackle the two different assignments associated with a larger group project. Naturally, they feel that it would be most fair to break into groups of two and three. How many ways are there to do this? C...
Math
Find the probability of tossing exactly 2 heads on 3 tosses of a fair coin.
Math
How many ways can 9 keys be arranged on a circular key ring?
Math
Find P(5,2).
math
A set of data is normally distributed with a mean of 16 and a standard deviation of 0.03. What percent of the data is between 15.2 and 16?
math
Factor completely, or state that the polynomial is prime. 375x^3 - 192y^3
MATH
tan è = RISE OVER RUN, RISE IS 10 AN D RUN IS 6 tan è = 10/6 SOLVE è
Maths
if q>0, how can u use the graph of y =sin theta to draw the graph of y =sin theta +q?
MATH
CAN SOMEONE HELP ME WITH THIS PROBLEM HAT SIZE HEAD CIRCUM. HEAD CIRCUM- 7 1/2 20 3/5 60 X X 59 FOR THE FIRST X ROUND TO THE NEAREST EIGHT INCH. fOR THE SECOND X ROUND TO THE NEAREST FIFTH INCH AS NEEDED.
math
I have a couple of math questions that i cant seem to get to work out. can someone help me please.? 1.) (x/x+6)-(6/x-6)=(x^2+36)/(x^2-36) 2.) (r-2)-(2-r)=0 3.) add (8/ty^2)+(9/t^2y) 4.)add (7/w)+(8/w^2) 5.)add ((r+10)/r)+(r/(r+10)) 6.) divide ((z^2-1)/16z+16) / ((z-1)/4) 7.) f...
math
Factor using the formula for the sum or difference of two cubes. x^6 - 27y^3
math
Factor completely, or state that the trinomial is prime. 3y^3 + 15y^2 + 18y
math
1.Use factoring to solve the quadratic equation. x2 - 64 = 63x
math
Factor completely, or state that the polynomial is prime. 375x^3 - 192y^3
Math
Use factoring to solve the quadratic equation. 5x2 - 25x + 30 = 0
Maths
Calculate the area of the surface bounded by the curves representing the functions f(x)=x²+6x and g(x)=4/(x-2). Thank you in advance If possible, help with this question aswell: Calculate f'(x)=(e^2x - ln(2)). Between ln(2) and 0. I know you integrate the function and...
maths
Determine the coordinates of the point on the curve representing the function f(x)=ln(2x-1) where the tangent is parallel to the line with equation 2x-5y=0 Thanks for any help!
Math
I need help with this problem. I have to prove that cos^2(2x)-cos^2x = sin^2x-sin^2(2x)
Math
Block A & B slide on lubricated surfaces for which friction is .1. knowing that the system is released from rest, determine the velocity of block B after 5 seconds block A is 10 N block B 20N and block B is on a 30 degree incline connected to a at top of the surface
math
add (7/w)+(8/w^2)
math
The median score on a test is 90. Is it possible to add two more scores to the data and still have a median score of 90?
math
The median score on a test is 90. Is it possible to add two more scores to the data and still have a median score of 90?
math
find all numbers for which the rational expression is undefined (1/w-6)
math
cable tension
sciencee
1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
5th grade math
find the surface area of a rectangular with the measurements of 4 5 and 8
ALGEBRA
Answer the questions below. Use Equation Editor when writing or solving mathematical expressions or equations. First, save this file to your hard drive by selecting SAVE AS from the File menu. Click the white space below each question to maintain proper formatting. Part A. A c...
math
who makes rainwater mix with dirt?
math
Express 3.46 as a percent.
Mathamatics
OIS ANY POINT ON DIAGONAL DB OF PARALLOGRAM ABCD PROVE THAT, AR(TRIANGLE OAB) = AR(TRIANGLE OBC)
math
Do know a word using capital letters.With 5acute angles,2obtuse angles,andnn 5right angles.
math
If you have five brownies and you want to share them equally with four people. What is the fraction each person receive?
math
4 people need to cross a brige but it is dark outside and they only have one flashlight and only 2 people can cross at one time. doris takes 10 minutes bob takes 5 minutes jack takes 2 minutes and annie takes 1 minute. how can thay get across in 17 minutes. someone has to go b...
English
1. What's your favorite class? 2. It's math. 3. It's math class. 4. It's a math class. 5. My favorite class is math. Which are the right answers for the question? 6. What's your favorite subject? 7. It's math. (What about the question, #6? Is the questi...
Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack? Mr. L answered to my question like this: 6/8 + 1/8 + 2/8 + Mom = ?/8 b...
Math
You are playing a card gam e with a full deck of 52 cards. You win if you draw a red card that is a mltiple of 5. What are your chances of winning on your first draw? For me will be 4/52 . It's that correct?
Math Help
7-4w=10w what does w=?
math
Do know a word using capital letters.With 5acute angles,2obtuse angles,and 5right angles.
math
a jar has 11 red, 16 violet, 6 green and 25 gray marbles. find p (green)
6th grade math
ok 4/25 * 75/100 then switch it to divison 4/25 / 75/100 but you need the recipricle so its 4/25 / 100/75 =?
math
A physician prescribed tetracycline suspension for a patient who is to take 2 teaspoonfuls four times a day for 4days, then 1 teaspoonful four times a day for 2 days. How many mls of the suspension should be dispensed?
math
the area of a rectangle is 100 square inches.the perimeter of the rectangle is 40 inches.a second rectangle has the same area but a different perimeter. is the second rectangle a square?
math
Ed, Ethan and Nathan are playing a game. Ed has won11 rounds, Ethan has won 8 rounds, and Nathan has won 1 round. Write the relative frequency of Ed not winning a round as a percent. 45%? Is my Answer correct?
math
Can somebody PLEASE help me understand how to find the domain of a function. I have an F in algebra 3 and just got a 50% on my math quiz. I'm desperate!
math
find the domain and range of the function. f(x)= square root of x+3
math214
Joe’s baseball team sold 200 chances to win a $250 set of golf clubs. What is the expected value of a single chance if only one chance wins?
math214
15) (a) Find 28° 29’ 46” - 16° 48’ 59’’ (b) Express 5.4° in terms of - degrees - minutes - seconds
math214
Complete the following: (a) 1400 ft2 = _________ yd2 (b) 1/9 yd3 = _________ ft3 (c) 4.5 lb = _________ oz (d) 32 °C = _________ °F
Math
how do I solve; two parallelograms have the same base length. The height of the first is half the height of the second. What is the ratio of the area of the smaller parallelogram to the area of the larger one?
math
Eighteen marbles are dropped into a jar. There are 8 black marbles, 7 red ones, and 3 silver ones. Marbles are taken from the jar without looking. Use this information to answer these two questions. 1. If one marble is taken, what is the probability of taking a marble that is ...
Mathematicas
You are playing a card gam e with a full deck of 52 cards. You win if you draw a red card that is a mltiple of 5. What are your chances of winning on your first draw? For me will be 4/52 . It's that correct?
math
Can someone please help. I keep coming up with different answers. 3x - 2 > -2x + 4
Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack?
math
Write the probability as a decimal,percent and fraction. A) cannot happen B) is certain to happen C) has a "50-50" chance D) will happen about 3 times out of 4 E) has 2 chances in 3 of happening
math214
Classify the following as true or false. If false, tell why. _______ (a) A parallelogram has four acute angles. _______ (b) A line segment contains an infinite number of points. _______ (c) The union of two rays is always a line. _______ (d) Every equilateral triangle is a sca...
math214
Joe’s baseball team sold 200 chances to win a $250 set of golf clubs. What is the expected value of a single chance if only one chance wins?
MATH
Find the surface area of the 4 x 4 x 4 cm Prism shown. You may want to draw a net to help you. Remember to answer in the correct units of measure for area. (10 points) (Points :10) 96cm 48cm2 96cm2 3 2. [8.08] Find the surface area of the cylinder with radius, r = 3 m and heig...
MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. x- 2y=3 4y- 2x=0
math
an observer is standing 200 meters from a hot air ballon, when is rising vertically at constant rate of 4m/sec. how fast is the angle of elevation changing 30 seconds after launch?
Math
how do I solve; two parallelograms have the same base length. The height of the first is half the height of the second. What is the ratio of the area of the smaller parallelogram to the area of the larger one?
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