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Question 288821: On a stormy february day 28% of the students enrolled at southside high school were absent . How many students are enrolled at southside high school if 476 students were absent
Click here to see answer by stanbon(75887)

Question 288838: I am needing help writing this out, I am stumped:
Write each statement using mathematical symbols:
ten less than the quotient of n and the difference between n and six
Thanks,
Jen
Click here to see answer by richwmiller(17219)

Question 288869: can someone please help me out on this.
One number is five more than another number. Their sum is 285. What are they?
Thanks,
Jen
Click here to see answer by dabanfield(803)

Question 288983: The area of a rectangle is 180 square inches. The perimeter is 58 inches. What are the dimensions of the rectangle.
sixth grade student - doesn't know how to solve the problem
Click here to see answer by mananth(16946)

Question 289172: 3 times the first of three consecutive numbers is 4 more than 2 times the second
Click here to see answer by checkley77(12844)

Question 289228: at 7:00 a.m joe starts jogging at 6 mi/h. at 7:30 ken starts off after him. how fast must ken run in order to overtake him at 7:30 a.m.?

Click here to see answer by richwmiller(17219)

Question 289364: I am needing help solving this word problem- these are too confusing to me
The total profit (in dollars) for sales of x rowing machines is given by P(x)= -0.2^2 + 300x -200. What is the profit if 500 are sold? For what value of x will the profit be a at maximum?
Thanks,
Jen
Click here to see answer by richwmiller(17219)

Question 284801: i am an odd number between 20 and 100 the sum of my digits is 11 what numbers could i be
Click here to see answer by Deina(147)

Question 289503: four more than twice a number is less than neagative eighteen. find all numbers that make this statement true

Click here to see answer by Earlsdon(6294)

Question 289579: if rice costs r cents per kilograms, how many kilograms of rice, in term of r, may be bought for $5.00?
Click here to see answer by richwmiller(17219)

Question 289744: How Do you find the Hypotenuse of a right angle that equals c^2= 51^2+140^2
Click here to see answer by solver91311(24713)

Question 290334: What are the x- and y-intercepts of the line with equation 4x + 5y = 40?
Click here to see answer by Fombitz(32388)

Question 285457: Scenario: Pedro Lopez, the owner of Pedro's is considering a new oven in which to bake the firm's signature dish, vegetarian pizza. Oven A can handle 20 pizzas an hour. The annual fixed costs associated with oven A are $20,000 and the variable costs are $2.00/pizza. Oven B is larger and can handle 40 pizzas/hr. The fixed costs associated with oven B are $30,000/yr and the variable costs are $1.25/pizza. The pizzas sell for $14 each.
a. What is the break-even point in the number of pizzas for each type of oven.
b. If Pedro expects to sell 9,000 pizzas/yr, which oven should he purchase.
c. If Pedro expects to sell 9,000 pizzas/yr, which oven should he purchase.
d. At what volume should Pedro swicth ovens?
Click here to see answer by zouz123(1)

Question 290368: A girl has 4/9 nickles and 1/3 dimes. How many more nickles than dimes does she have in fraction form?
Click here to see answer by checkley77(12844)

Question 290525: a $120 COAT GOES ON SALE FOR $96. BY WHAT PERCENT WAS THE COAT DISCOUNTED?
Click here to see answer by richwmiller(17219)

Question 290662: I need help with a number riddle. Twice a number is 150 less than 5 times the number. What is the number?
Click here to see answer by richwmiller(17219)

Question 290662: I need help with a number riddle. Twice a number is 150 less than 5 times the number. What is the number?
Click here to see answer by College Student(505)

Question 290694: how much water needs to be added to 3 quarts of 96% alcohol to produce a mixture that is 75% alcohol? (concentration of alcohol in water is 0%)
Click here to see answer by richwmiller(17219)

Question 290889: 6+6
Click here to see answer by missy12(3)

Question 290884: If a concentration of a solution was 0.15 moles/liter 7 minutes after an experiment began, and 0.06 moles/liter 25 minutes after the experiment began, what would a linear model look like for a concentration (y) vs. time (x) when predicting the concentration 28 minutes in and when the concentration will go to zero?
Click here to see answer by stanbon(75887)

Question 290895: 5 integers whose product is less than zero and whose sum is 17
Click here to see answer by Edwin McCravy(20055)

Question 291026: what is the perimeter of a parallelogram with two adjoining sides measuring 3ft and 4ft.

Click here to see answer by richwmiller(17219)

Question 291122: I am attempting to solve a finance annuity equation. n=10 i =.03
in the formula= 1-(1.03)^-10 /.03 the answer is 8.53020 I am doing something wrong in the order of operations and cannot figure it out. I appreciate seeing the problem solutiion stepped. Thank you. the formula is 1-(1+i)^-n/i
Click here to see answer by jim_thompson5910(35256)

Question 291366: slove by elimination method
7a+7b=21
-7a+b=43
Click here to see answer by richwmiller(17219)

Question 291364: The sum of three numbers is 138.The second number is twice the first, and the third is 7 less than the second
Click here to see answer by richwmiller(17219)

Question 291371: slove using elimination method
7a+7b=21
7a+b=43
Click here to see answer by richwmiller(17219)

Question 291389: mary has $3.75 in nickels,dimes,quarters. she has three more quarters than dimes. she has twice as many nickels as quarters. how many of each coin does she have?
Click here to see answer by stanbon(75887)

Question 291394: can one angle of a right triangle measure 100 degrees? explain answer.
Click here to see answer by Alan3354(69443)

Question 291442: the moon is 240,000 miles from earth how many days would it take a spacecraft to reach the moon is it travels at an average speed of 100 miles per minute?
Click here to see answer by Alan3354(69443)

Question 291612: Find three consecutive odd integers such that three times the third is 7 more than the sum of the other two.
Click here to see answer by stanbon(75887)

Question 291554: I need help solving this problem.
A man invests $7000 in an account that pays 7% interest per year, compounded continuously. How long will it take for the amount to be $8500?
Click here to see answer by Theo(13342)

Question 291695: x+4-4=7 how do i do this?
Click here to see answer by College Student(505)

Question 291772: find the length and width of a rectangle if the perimeter is 1280 inches and the length is 90 inches more than the width

Click here to see answer by richwmiller(17219)

Question 291778: Please answer this question! Jackie is k years old. Her brother Joe is k^2 years old. In 7 years, Joe will be one year older than twice Jackie's age at time. How old is each now?
Click here to see answer by richwmiller(17219)

Question 291851: Exactly 18 coins make up 85 cents
Click here to see answer by checkley77(12844)

Question 291873: I am needing help with the second part of this problem. I solved the first part(I think I solved it correctly), but am unsure on how to solve the 2nd part. Can someone please assist me.
The CDC records predict the number of people infected with the HIV virus in Africa will increase from 2.5 million in 1980 to 7.1 million in 2020.
a)Using the form f(t)=y0b^t to model the data, where t=0 corresponds to 1980
b) What is the projected infected in 2010? 2015?
Here is what I have for part A:
Rate = 2.5 when t = 0 f(t) = 2.5b^t
F(40) = 7.1
2.5b^40 = 40 (divide each side by 2.5)
B^40 = 40 ^1/40
2.5
B = 40 ^1/40 ~ .93303
2.5
Function = f(t) = 2.5(.93303^t)

I am struggling with part b.
Thanks,
Holly
Click here to see answer by richwmiller(17219)

Question 291897: are these systems inconsistent, consistent dependent, or consistent independent
y=-x
y=-2x+2
shrrlwsn@yahoo.com
Click here to see answer by user_dude2008(1862)

Question 292027: could you pls help me to solve this question: A bus leaves a station at 8:00 a.m. and averages 30 mi/h. Another bus leaves the same station following the same route two hours after the first and averages 50 mi/h. When will the second bus catch up to the first?
Click here to see answer by richwmiller(17219)

Question 292237: I have tried contacting the teacher and am not getting the response I need. Will be taking a test on Friday morning and can't seem to get the exact answer to my problem or how to enter the information correctly on the calculator. Please advise:
2. The maturity value of a 8-month simple interest note is $6000. If the annual interest rate is 8%, what was the face value?
answer is suppose to be ... $5696.38
I keep getting $5680.00 instead (when using a financial calculator) or
if I try to mutiply 6000x .08x 8/12 or .08x8/12= .053333333=divided 6000 = 1125.00-6000= $4875.00
what am I doing wrong?
Thank you for any assistance you can give me

Click here to see answer by richwmiller(17219)

Question 292321: What is the average speed of a car travelling 330 miles in 6 hours

Click here to see answer by helpnalgebra(91)

Question 292376: How would I solve this problem. (Pythagorean Theorem)
One side of a rectangular stage is
2 meters longer than the other. If the diagonal is 10 meters,
then what are the lengths of the sides?
Click here to see answer by oberobic(2304)

Question 292646: how many quarts of 30% soap solution and 60% soap solution should be mixed to obtain 60 quarts of 50 % soap solution?
Click here to see answer by josmiceli(19441)

Question 292733: a train ride is 8 hours long a cuductor comes in every 2/3 of an hour how many times does he come in
Click here to see answer by richwmiller(17219)

Question 292733: a train ride is 8 hours long a cuductor comes in every 2/3 of an hour how many times does he come in
Click here to see answer by Edwin McCravy(20055)

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