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Question 378919: An electric radiator which is an ordinary constant resistor emits a heating power of 1.2 KW at a mains supply voltage of 230 V.
what is the total heating power in each respective instance when two such radiators are connected
a) in parallel, and
b) in series to the 230 V supply voltage ?
Click here to see answer by Alan3354(69443)

Question 379505: if i multiply two negatives can my answer be negative
Click here to see answer by Fombitz(32388)

Question 379631: square root of (1/36)
Click here to see answer by Fombitz(32388)

Question 379742: the sum of 2 consecutive odd numbers is 44. what is the smaller number?
Click here to see answer by ewatrrr(24785)

Question 379747: Y^2-5y-14 / y^2-4y-21
Click here to see answer by ewatrrr(24785)

Question 379747: Y^2-5y-14 / y^2-4y-21
Click here to see answer by Fombitz(32388)

Question 378424: Suppose the population of a city 50,000 and is growing 3 % each year.
A. The initial amount is ?
B. The growth factor b is 100% + 3% which is 1 + ? = ?
C. To find the population after one year, you multiply 50,000 � ?
d. Complete the equation y = ? � ? To find the population after x years.
E. Use your equation to predict the population after 25 years
Click here to see answer by dpurcell58(1)

Question 380062: What is y=4x+2 in standard form?
Click here to see answer by rfer(16322)

Question 380030: Write the equation in standard form with integer coefficients.
y=-.4x+1.2
Click here to see answer by Fombitz(32388)

Question 380117: If i have a 66.5 grade in my pre calculus class that only counts for 75% of the material covered, what grade do i need to get in my final exam that is worth 25% of my overall grade to pass the class with at least a B? i just dont know how to calculate the percentage of the final(25%).
Click here to see answer by kingme18(98)

Question 380383: How do you write this sentence as an inequality? The maximum safe exposure limit of formaldehyde is 2 parts per million.
Click here to see answer by rfer(16322)

Question 380404: 2 pipes are connected to a tank. On pipe fills the tank in 7 hours. The second pipe empties the tank in 9 hours. If both pipes are open, how long will it take to fill the tank?
Click here to see answer by Earlsdon(6294)

Question 380401: 2 pipes are connected to a tank. One pipe fills the tank in 7 hours. The second pipe empties the tank in 9 hours. If both pipes are open, how long will it take to fill the tank?
Click here to see answer by Alan3354(69443)

Question 378471: Find the quadratic equation with a maximum value of 10 and x-intercepts of 1 and 3
Click here to see answer by robertb(5830)

Question 380303: http://img541.imageshack.us/img541/3037/wth012.jpg
Click here to see answer by Fombitz(32388)

Question 380473: http://i53.tinypic.com/oupkqx.png
Click here to see answer by Fombitz(32388)

Question 380394: The Rainbow Bridge is Utah, is a natural arch that is approximately parabolic in shape. The arch is about 88 m high. It is 84 m across at its base. Determine a quadratic relation, in factored form, that models the shape of the arch.
Click here to see answer by Fombitz(32388)

Question 380402: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.
Click here to see answer by Fombitz(32388)

Question 380562: 2k -3 divided by -5 is greater than 7
Click here to see answer by ewatrrr(24785)

Question 380377: I need to brush up on my algebra
and geometry for a teaching assistant job. How do I get the app for BlackBerry Storm2?
Click here to see answer by rfer(16322)

Question 380738: What formula to be used when P(x) is of degree four?
Click here to see answer by richard1234(7193)

Question 380974: I need help to simplify
-3[81-(68-98]=
Click here to see answer by Theo(13342)

Question 381319: 6x-2=x+3
Click here to see answer by rfer(16322)

Question 381346: The weight of a bucket of golf balls is the function of the number of balls each of which weighs 1.6 oz. Model each situation with the linear functions and graphs Is reasonable to include negative numbers in the range ?
Click here to see answer by richard1234(7193)

Question 381386: Natalie spend 90 minutes doing her math and english homework. The time he spends on her math homework is a function of the time she stands on her english homework
Click here to see answer by robertb(5830)

Question 381455: Find the simplest form of 8x/3square:what is the answer
Click here to see answer by Dae-Ho(3)

Question 381514: Your question goes here. Write clearly! We are not mind readers, so be sure to ask a question that we can understand.
Click here to see answer by richard1234(7193)

Question 381558: Jack works part time in order to earn money and purchase baseball cards. He gets paid for $8 per hour on the job and he uses all and the only the earning for buying baseball cards. Suppose that the baseball cards he purchases are priced at $5 each. Let y be the number of cards he gets and let t be the number of Jack's worked hours. Write y as a function of t in function notation.
Click here to see answer by stanbon(75887)

Question 381761: Solve 40 + 16 sin x − 56 = 0 in the interval 0 x 2
Click here to see answer by stanbon(75887)

Question 381827: Solve by factoring 3x+13x-10
Click here to see answer by Alan3354(69443)

Question 381869: Complete each multiplication sentence.
3\4 x _____ = 24
Click here to see answer by ccrox(11)

Question 381952: The problem is an Integer problem and the problem is 2 + -6= do I convert the second number to it's opposite
Click here to see answer by mananth(16946)

Question 382138: Hi.I need help on solving equations by adding or subtracting.for ex. :n+1/3=11/12 thanks.(:
Click here to see answer by mananth(16946)

Question 382272: In the standard (x,y)-coordinate plane, what is the distance between the points (1,2) and (6,4) ?
Click here to see answer by solver91311(24713)

Question 382472: Eddies age is 4 times macros. in 10 years eddie will be twice as old as marco will be. how old is each now
Click here to see answer by stanbon(75887)

Question 382645: I need help on my algebra I have to find the roots of an equation and this problem has me stumped 3x^2=48
Click here to see answer by rfer(16322)

Question 382645: I need help on my algebra I have to find the roots of an equation and this problem has me stumped 3x^2=48
Click here to see answer by solver91311(24713)

Question 382645: I need help on my algebra I have to find the roots of an equation and this problem has me stumped 3x^2=48
Click here to see answer by kingme18(98)

Question 382645: I need help on my algebra I have to find the roots of an equation and this problem has me stumped 3x^2=48
Click here to see answer by mananth(16946)

Question 382629: How far will a rubber ball fall in 10 seconds?
Click here to see answer by richard1234(7193)

Question 382817: If I earned 1600 and I spend 224 and I invest 1000 I put the remaining in a savings what percent of my earnings did I put in a savings?
Click here to see answer by rfer(16322)

Question 382781: 1/3x-2/5=1/4(x+3) solve for x
Click here to see answer by rfer(16322)

Question 382796: How to solve system of equations by graphing.
Click here to see answer by Fombitz(32388)

Question 382885: Solve for w
P=2L+2w
Click here to see answer by Fombitz(32388)

Question 382977: Suppose that A is the set of sophomores at your school and B is the set of students in discrete mathematics at your school. Express each of these sets in terms of A and B.
a) the set of sophomores taking discrete mathematics in your school
b) the set of sophomores at your school who are not taking discrete mathematics
c) the set of students at your school who either are sophomores or are taking discrete mathematics
d) the set of students at your school who either are not sophomores or are not taking discrete mathematics
Click here to see answer by edjones(8007)

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