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September 30, 2014

Homework Help: Math

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Recent Math Questions

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Math
If I want to reflect f(x) = -3x + 5 over the x-axis, would the new equation be f(x) = 3x - 5? Or is it -f(-x) = 3x - 5?
Monday, September 15, 2014 at 12:55pm

Math 221 Week3
A probability experiment consists of rolling a 6 sided die. Find the probability of the event below: rolling a number less than 3? The probability is
Monday, September 15, 2014 at 12:49pm

Math 221 Week3
A distribution center receives shipment of a product from three different factories in the quantities of 60, 35 and 25. Three times a product is selected at random, each time without replacement. Find the probability that (a) all three products came from the second factory and...
Monday, September 15, 2014 at 12:36pm

8th grade math
what is 5² / 5⁵ = ? other options are: a) 5¹ b) 5³ c) 5⁴ d) 5² **** Is 5² right?
Monday, September 15, 2014 at 12:15pm

Math
The observation for three materials shows: Material A absorbs all the visible light (opaque) Material B is transparent to all the visible light (transparent) Material C absorbs blue light but is transparent to red light. (Blue light has wavelength 0.4 m, red light has ...
Monday, September 15, 2014 at 10:48am

Math using quadratic equation
The freight train runs 12miles per hour than a passenger train. It runs 65miles in the same time that the passenger train runs 165miles find the rate of each train. I dont really know the formula using quadratic im sorry
Monday, September 15, 2014 at 7:36am

Math using Quadratic equation
The area of a square is 196cm2(squared), find the measure of one side. Thank you,, this is my assign. In math1, im using the formula A=s*s but i need to solve this using quadratic equation.
Monday, September 15, 2014 at 7:27am

math
Suppose someone gives you 8 to 2 odds that you can not roll two even numbers with the roll of two fair dice. This means you win $8 if you succeed and you lose $2 if you fail. What is the expected value of this game to you? Should you expect to win or lose the expected value in...
Monday, September 15, 2014 at 3:20am

math
A point,X ,is 25 feet from the center of a circle.If the diameter of the circle is 14 feet,what is the length (in feet)of a tangent from point X to the circle? a. square root 29 b. 18 c. 15 square root 2 d. 24 e. square root 673 please answer and explain
Sunday, September 14, 2014 at 10:47pm

physics, math
Part A & B are 0.10m apart. A point charge of +3.0*10^-9C is placed at A and a point charge of +1.0*10^-9C is placed at B. X is a point on the straight line through A and B. If a third charge C or charge 1.5*10^-9 is placed at X, where must X be for the resultant force to be ...
Sunday, September 14, 2014 at 9:43pm

Math
How do you write the transformation of a quadratic function two units right from its parent function? Is it y = (x + 2)^2?
Sunday, September 14, 2014 at 9:14pm

Math
A Social Security number has seven digits. How many Social Security numbers are possible?
Sunday, September 14, 2014 at 9:14pm

Math
An exam consists of six true-or-false questions. Assuming that every question is answered, in how many different ways can a student complete the exam? In how many ways may the exam be completed if a penalty is imposed for each incorrect answer, so that a student may leave some...
Sunday, September 14, 2014 at 9:11pm

Math
What is the definition of a multiple
Sunday, September 14, 2014 at 9:07pm

math
given the domain of g(x) is (-3,5) and the range of g(x) (-10, 10) find the domain and range of the transformed function 4g(x-7)+12
Sunday, September 14, 2014 at 8:46pm

Math
Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 (a) x in terms of y x = (b) y in terms of x y =
Sunday, September 14, 2014 at 8:31pm

Math
A box with an open top is to be constructed by cutting a-inch squares from the corners of a rectangular sheet of tin whose length is twice its width. What size sheet will produce a box having a volume of 32 in^3, when a = 2? width in length in
Sunday, September 14, 2014 at 8:30pm

Math
A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides (see the figure). If the area of the base is to be 144 in^2, what size piece of cardboard should ...
Sunday, September 14, 2014 at 8:28pm

Quick math help
An angle with a measure of 89.9 degrees... Would it be a right or an acute angle?
Sunday, September 14, 2014 at 7:51pm

PLEASE HELP! Math
I really need help with this one question on my math pretests and I have no idea what to do! The question is: Mandy begins bicycling west at 30 miles per hour at 11:00 am. If Liz leaves from the same point 20 minutes later bicycling west at 36 miles per hour, when will she ...
Sunday, September 14, 2014 at 7:40pm

Math
12 cards are drawn with replacement from an ordinary deck of 52 cards. What is the probability that 4 queens of hearts, 4 aces of spades, and 4 kings of clubs are drawn?
Sunday, September 14, 2014 at 7:34pm

Math evaluating expressions with rational numbers
Liquid nitrogen freezes at -346 degrees F and boils -321 F. Janice gradually heats frozen nitrogen 1 1/2 degrees several times over an hour. 1)Define variables for the number of times Janice increases the temperature and the temperature of the liquid nitrogen after the ...
Sunday, September 14, 2014 at 7:17pm

math
How many gallons of water are needed to raise the level of a swimming pool 75' x 42' four inches above its present level? ( 1 cubic foot= 7 1/2 gallons )
Sunday, September 14, 2014 at 7:11pm

math
If 4% of motorists on the Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging,out of every 10,000 motorists how many motorists may be expected to go to this motel?
Sunday, September 14, 2014 at 7:08pm

math
Evaluate x5-13 if x =-2
Sunday, September 14, 2014 at 6:27pm

math
A company has determined that the profit, in dollars, it can expect from the manufacture and sale of tennis racquets is given by P = −0.01x2 + 130x − 180,000. How many racquets should the company manufacture and sell to earn a profit of $174,900
Sunday, September 14, 2014 at 5:50pm

math
In order to pass a physical education class at a university, a student must run 1.0 mi in 12.5 min. After running for 10.0 min (assume constant speed), she still has 510 yd to go. What constant acceleration does she need over the final 510 yd in order to make it?
Sunday, September 14, 2014 at 5:45pm

math
Clark is cooking a 12 pound ham. The ham needs to be cook 20 minutes for each pound. Clark wants to serve the ham at 5 p.m. What is the latest time he should place the ham in the oven.
Sunday, September 14, 2014 at 5:29pm

math
Riley wants to raise $2550 for a fundraiser walk. He needs to ask people to pledge money for each mile that he walks. How many people will he need to get pledges from in order to reach his goal.
Sunday, September 14, 2014 at 5:20pm

math
Complete the pattern 82,71,60,?,?
Sunday, September 14, 2014 at 5:15pm

Math
Ok so I need to write a equation for this jasmine paid $25 for 2 binders and 1 pack of pens. The pens cost $5. What equation could I write to find out the price per binder? Could it be 25-5=x
Sunday, September 14, 2014 at 5:14pm

math
Complete the pattern 4,13,22,?, ?
Sunday, September 14, 2014 at 5:03pm

MATH
Brenda donates part of her salary to the local childrens hospital each month by having $15 taken out of her monthly paycheck. Write an integer to represent the amount taken out of each paycheck. Find an integer to represent the change in the amount of money in Brenda's ...
Sunday, September 14, 2014 at 4:56pm

math
after how many complete rotations will a bicycle wheel with a diameter of 65cm cover a distance of 2km
Sunday, September 14, 2014 at 4:53pm

math
you are ordering pizza for a party. One pizza serves 8 people. You are expect that there be 35 people. How many pizzas should you order.
Sunday, September 14, 2014 at 4:48pm

math
The length of a rectangle is five less than three times its width. Find the dimensions of the rectangle if its area is 782. I get 18.84 x(3x-5)=782. The book says 17 m by 46 m
Sunday, September 14, 2014 at 4:18pm

math
The length of the shadow of a pole on the level ground increases by 60 meter when one angle of elevation of the sun changes 54° to 32°.calaulate the height of the pole,correct to three significants figures.
Sunday, September 14, 2014 at 4:07pm

Math
A box manufacturer wants to produce an open box for which the volume is 2 cubic meters and the length is twice the width. What actual dimensions of he box will require the least amount of material? Work: V = 2m^3 2m^3 = (w)*(2w)*(h) Possible dimensions: length width height ...
Sunday, September 14, 2014 at 3:57pm

math
how could you rewrite the expression (3+5)+8 using the Associative property of addition
Sunday, September 14, 2014 at 3:51pm

math
Amy is building a house. The basement floor is at -15 feet . The roof of the house is above the ground 25 feet . Express the comparison of heights as an inequality . Explain the meaning of the inequality
Sunday, September 14, 2014 at 3:41pm

math
(12^5)^3 = 12 ( I have to find the exponent) my answer is 15 for the exponent
Sunday, September 14, 2014 at 2:05pm

Math
Use distributive property and simplify the expression. 4 + 2(3x - 1) + 9 - 6x + 15 - 5x + 14 - 3x + 14 - 6x + 11 *my answer* I wanna make sure my answer is right. 3.82e+7 (there is no multiple choice) my answer is 38200000
Sunday, September 14, 2014 at 2:01pm

Math!
1) What is the value of 19 + 5a^4 + 3b^2 when a = 2 and b = -4? (this is not a multiple choice question) but my answer is 147. 2)Combine the like terms to simplify the expression: 4 + 7xy^2 + 5y^3 + 10x -4xy^2 - 8x - 4y^3 + 9 - y^6 + 3x^2y^2 + 10x + 13 - y^3 + 3xy^2 + 2x + 13...
Sunday, September 14, 2014 at 1:05pm

Math 221
find the probability of the event rolling a number less than 6
Sunday, September 14, 2014 at 12:56pm

Math
In how many arrangements of the letters BERKELEY are all three E's adjacent? I think its (5!)*(6) i'm looking for some clarification.
Sunday, September 14, 2014 at 12:29pm

Math
If a plane has intercepts at 2a, 3a, and 4a along the three Cartesian coordinates where a is the lattice constant of the cubic cell, (i) find the Miller indices of the plane and (ii) find the distance between the neighboring planes parallel to this plane
Sunday, September 14, 2014 at 12:27pm

8th grade homework
Please help me I beg of you! My math teacher is awful and I have no idea how to do my pretest and she's picky about showing my work so it would be helpful if you could explain :) 1.six is subtracted from a number. The result is devided by four. This result is added to 10 ...
Sunday, September 14, 2014 at 12:20pm

Math
What is the answer to page 31 of pre-algebra with pizzazz (what do hair dressers do?) ?
Sunday, September 14, 2014 at 11:27am

math
The farmer wants to use the 500 m to an enclosure divided into two equal areas, What is the total maximum area that can is achieved with the 500 m fence. using differential calculus to the solution.
Sunday, September 14, 2014 at 10:03am

Math
6m by 5m by 4m , rectangular tank How do you know which one is the height?
Sunday, September 14, 2014 at 9:37am

Math
Mrs lim bought apples at a cost of $150 from the wholesaler. If she sells 1 pace of 5 apples at $2.40, what is the least number of apples she must sell in order to make a profit? I am kind of sure I need to use HCF(highest common factor) in this question.. I might be wrong ...
Sunday, September 14, 2014 at 7:10am

math
Determine the rule when gradient =2,x intercept =3 .can. anyone please explain,cause I know y intercept =c,but I don't know x intercept,thanks
Sunday, September 14, 2014 at 6:13am

math
A rocket ascends at an angle of 60.0˚ with the horizontal. After 1.00 min it is directly over a point that is a horizontal distance of 12.0 km from the launch point. Find the speed of the rocket.
Sunday, September 14, 2014 at 5:49am

Math
7^x-9=4^2x
Sunday, September 14, 2014 at 5:38am

Math
Find the equation of the graph of all points such that the difference of their distances from (10,0) and (2,0) is always 1.
Sunday, September 14, 2014 at 4:55am

Math
3^2x-3^x-24=0 Could you also teach me the process in answering it?
Sunday, September 14, 2014 at 3:47am

Math
Find how much interest $25,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.
Saturday, September 13, 2014 at 11:35pm

math
Question 1.1. For each of the following questions, choose the correct answer. What is another word for rotation? (Points : 1) flip turn slide fall Question 2.2. What's another word for a translation? (Points : 1) flip turn slide fall Question 3.3. Maria slides a triangle ...
Saturday, September 13, 2014 at 11:05pm

Math
I wrote question you have not dissolved
Saturday, September 13, 2014 at 10:56pm

Math
Please solve the Q look ( nina, math)
Saturday, September 13, 2014 at 10:41pm

Math
What is the parent function of h(x) = -x^2? Is it h(x) = x^2 or h(x) = -x^2? How can I describe h(x) = -x^3 as a transformation of the parent function of a cubic function? Do I just say that it is a reflection, or is there a way of saying it with numbers, as in h(x) = x^3 - 4?
Saturday, September 13, 2014 at 10:13pm

math
find two numbers whose difference is 153
Saturday, September 13, 2014 at 10:06pm

Math Proof
Find a rational number and an irrational number between x=8.9949926 and y=8.995
Saturday, September 13, 2014 at 9:57pm

Math
Analyze Greg saw these numbers on a license plate while driving: 2,4,5,3 and 9 . Write one possible number that could be on the license plate. Help me,,
Saturday, September 13, 2014 at 8:17pm

Math
Challenge Write a 6 - digit number that has a 5 in the ten thousand place , a 3 in the thousands place ,a 4 in the tens place , and one digit that is 0.underline the 5,3,4,and the 0 in your number .is this the only number you could have written ? Expllain your answer and ...
Saturday, September 13, 2014 at 8:02pm

math
Angles B and F are corrsponding angles formed by a treversal intersecting two parallel lines. Angle B has a measure of 44. what is the measure of Angle F?
Saturday, September 13, 2014 at 7:47pm

math
find the distance, to the nearest tenth, from T(4,-2) to U(-2,3).
Saturday, September 13, 2014 at 7:10pm

math
2.Calculate the growth rate of Asset J dividends, we have to assume that future dividend payments will grow at a constant rate into the future forever. This constant rate can be estimated by calculating the average growth rate from the past dividends. Calculate Asset J’s ...
Saturday, September 13, 2014 at 7:10pm

math
simplify and state any restrictions: 1. x+3/x^2+11x+24 - 2x+10/x^2+11x+30 answer: -x-10/(x+8)(x+6) 2. x-4/x^2-8x+16 + 3x+21/x^2+12x+35 answer: 4x-7/(x-4)(x+5) i dont uderstand how to do it. can you please show me the steps. thanks
Saturday, September 13, 2014 at 6:56pm

math
write the fraction in words 4/7 3/4
Saturday, September 13, 2014 at 5:30pm

math (create equation)
A homeowner wishes to fence in three adjoining garden plots, as shown in the figure. If each plot is to be 80 ft^2 in area, and she has 88 feet of fencing material at hand, what dimension should each plot have? ---------- I I I I I I I I I I I I ----------
Saturday, September 13, 2014 at 4:51pm

math (create equation)
Abbie paints twice as fast as Beth and three times as fast as Cathie. If it takes 60 min to paint a living room with all three working togather, how long does it take for Abbie if she works alone?
Saturday, September 13, 2014 at 4:46pm

math
A student claims that to divide a number with the units digit 0 by 10, she just crosses out the 0 to get the answer. She wants to know if this is always true and why and if the 0 has to be the units digit. How do you respond?
Saturday, September 13, 2014 at 2:41pm

math
convert the following to representative fractions. 0 90 |__| , 1 cm = 0.9 km and 1 cm= 2000 km. please help, thanks
Saturday, September 13, 2014 at 2:22pm

math
when you throw up a cricket ball foot ball tennis ball and a basket ball which will go to a maximum height
Saturday, September 13, 2014 at 12:19pm

math
(please help me to solve this question) solving equation (1+x)^2/3 + (1-x)^2/3 = 4(1-x²)^1/3 are, value of x is
Saturday, September 13, 2014 at 11:31am

math
(please help me to solve this question) solving equation x+√(12p-x)/x-√(12p-x)= √(p)+1/√(p)-1 following roots are obtained
Saturday, September 13, 2014 at 11:08am

math
solving equation z²-6z+9=4√(z²-6z-6) following roots are obtained
Saturday, September 13, 2014 at 11:00am

Math
The maximum number of arbitrary constants is equal to a. Number of derivatives in the differential equation b. Degree of differential equation c. Order of differential equation e. None of the above I don't understand this, but my guess it's letter A. Please help.
Saturday, September 13, 2014 at 9:56am

-Math-Desperate
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account? looking for the ...
Friday, September 12, 2014 at 11:11pm

MATH
The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, what is the length?
Friday, September 12, 2014 at 10:52pm

In Response to Previous Math Question
What parent function describes the set (-1, -1), (0, 0), (1, -1) (-2, -8), (2, -8)? So should I write f(x) = x^2 or f(x) = -x^2 for the parent function?
Friday, September 12, 2014 at 9:51pm

Math(Geometry) beware its hard for sixth graders!
In order to rescue Sela's cat, her mother propped a 19 foot long ladder against a tree at a 42° angle with the ground. How many feet above the ground was their cat? Round your answer to the nearest tenth of a foot? 1. 21.2 ft 2. 14.4 3. 12.7 4. 28.4 I NEED THE ANSWER ...
Friday, September 12, 2014 at 9:44pm

Math
A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
Friday, September 12, 2014 at 9:39pm

Math
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account? Need the amount at 4...
Friday, September 12, 2014 at 9:37pm

math
Every marble in a jar has either a dot, a stripe or both. The ratio of striped marbles to non-striped marbles is 3:1, and the ratio of dotted marbles to non-dotted marbles is 2:3. If six marbles have both a dot and a stripe, how many marbles are there all together?
Friday, September 12, 2014 at 8:59pm

math
v = 1/3 pie^2 h; solve for h
Friday, September 12, 2014 at 7:14pm

math
A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off) for the first plane to...
Friday, September 12, 2014 at 7:12pm

math
Running at an average rate of 4 meters per second, a sprinter ran to the end of a track. The sprinter then jogged back to the starting point at an average rate of 2 meters per second. The total time for the sprint and the jog back was 2 minutes 6 seconds. Find the length of ...
Friday, September 12, 2014 at 7:12pm

math
An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account
Friday, September 12, 2014 at 7:11pm

math
an object weighing 40 tons hits an object at 40 MPH what is the force of the impact?
Friday, September 12, 2014 at 6:50pm

math
Write .4(5) as a fraction. The parenthesis represent it as a repeating decimal: .455555555555555555555 But what is it in a fraction?
Friday, September 12, 2014 at 6:47pm

math
-10+8=8+(-10) name the property illustrated
Friday, September 12, 2014 at 6:41pm

Math
Wile E. Coyote catapults himself off of a 500 ft. cliff with an initial velocity of 20 ft/sec. His height t seconds after catapulting is given by the function h(t) = −16t2 + 20t + 500 . (Note the y-intercept of (0, 500). a. Find his maximum height (Hint: he reaches ...
Friday, September 12, 2014 at 6:09pm

math
What is a proper factor?
Friday, September 12, 2014 at 5:55pm

Math
What parent function describes the set (-1, -1), (0, 0), (1, -1) (-2, -8), (2, -8)?
Friday, September 12, 2014 at 5:17pm

Math
A waiter made $120 in tips after waiting on 6 tables. What was the waiter's average tip per table?
Friday, September 12, 2014 at 4:56pm

Math
Matt made two types of pie: strawberry and blueberry. He cut all of the strawberry pies into 20 slices each and all of the blueberry pies into 15 slices each. If Matt cut the same total number of slices of each type of pie, what is the minimum number of slices of each type he ...
Friday, September 12, 2014 at 3:22pm

Math
If I am traveling at a speed of 65 mi/h and graph the distance I travel over five hours, would the graph be linear?
Friday, September 12, 2014 at 3:00pm

Language Arts - Please Check My Answer For This
Please help me with the following: Read the sentence. Juanita used her affinity for numbers to help her design a computer program that relied on college-level math formulas, even though she was only in middle school. Based on the context clues in the sentence, what is the best...
Friday, September 12, 2014 at 2:29pm

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