06/17/14

quadratic equations
X2+2x-8=0
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06/15/14

write and equation in standard form for (8,9), perpendicular to 3x+y=2
write and equation in standard form for (8,9), perpendicular to 3x+y=2
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06/14/14

solve the formula for the indicated variable
P = w - s         x  solve for w,   please if you can provide the step by step explanation to this equation, I will really appreciate  
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06/14/14

coffee mixtue amount
A store mixes Kenyan coffee worth $12 per kg and Turkish coffee worth $16 per kg. the mixture is to sell for $13 per kg. Find how much of each should be used to make a 180kg mixture
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06/12/14

One number is 200% greater than the other and their difference is 20. What is the smallest number?
it is about math and algebra please solve 
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06/11/14

Word Problem Help
Alpine's street sweeper cleans downtown in 60 hrs. A newer model cleans in 20 hrs. Together, how long to sweep the streets?
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06/11/14

I'm stuck on coverting slope form to Ax+By=C format.
I have y =2x-13 and the question reads: Write the equation of a line that passes through the given point and is perpendicular to the given line. Write the equation in the form Ax + By = C where ,... more
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06/11/14

22 sandwiches and 2 sizes of baskets. One type holds 7 sandwiches and the other holds 4 sandwiches. If a=7 and b=4, which shows the way to carry the sandwiches?
5b2a + 2b3a1a + 3b
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06/09/14

values of x
select the approximate values of x that are solutions to f(x)=0, where f(x)= -5x^2+5x+9   A). {1.93, -0.93}   B) {-5, 5}   C) {-1.00, -1.80}   D) {-0.56, 0.56}
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06/09/14

approximate values of x
Select the approximate values of x that are solution to f(x)=0, where f(x) p= -4x^2+6x+5   A) {-0.80, 1.20}   B) {-4, 6}   C) {-1.50,-1.25}   D) {-0.60, 2.10}
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06/07/14

Story Problem
Jane cane paint a room in a new house in 10 hours.  Together with her trainee, they can paint the room 7 hours.  How many hours would it take the trainee working by herself to do the job?
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06/07/14

How many children tickets were purchased?
At a State Fair, tickets for children cost $3.75 and tickets for adults cost $6.75.  How many tickets for children were purchased if 20 tickets were bought for $90.00.
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06/05/14

please math help thanks
you are paid 10.65/hr. your deductions are FICA (7.65%) federal tax withholding (9.9%) and state tax withholding are 493.68/month. how many hours per month must you work to be sure those expenses... more
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06/05/14

What is the approximate solution of 7^x=3^x+1?
I've tried to use log(10) to bring the exponents to the front but I keep ending up canceling out my variables. 
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06/05/14

how do you graph and solve logarithmic and exponential equations
Solving   3e^(-2x)=12   2^(x+1)+3=9   2+ln(x+3)=13   Graphing   2+log2(x+1)   -log1/2x   -2+ln (x-3)   2^(x+1)-3   log2(x+2)+4  
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06/02/14

Find the slant height of the cone shown
Find the slant height of a cone(to the nearest whole meter) having a radius of 6 m and height of 8 m.   Find the volume and the surface area of the above cone rounded to the nearest tenths.
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06/02/14

a dress is priced at $21.42. THe store is having a 30%-off sale. What was the original price of the dress?
A dress is priced at $21.42. The store is having a 30%-off sale. What was the original price of the dress?
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06/02/14

Help on homework!
A bakery sells single layer mini-cakes that are 3 inches in diameter for $4 each. They also have a 9-inch cake for $15. If both cakes are the same thickness, which option gives you more cake for... more
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06/01/14

Find the Expression
You need to find a formula for the number of cars produced by a new plant that was opened 25 days ago. You are told that three days ago the plant had 450 cars on hand, and that yesterday it had 480... more
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06/01/14

airplane rate of change problem
Flying against the wind, an airplane travels 4200 km in 7 hours. Flying with the wind, the same plane travels 4000 km in 4 hours. What is the rate of the plane in still air and what is the rate of... more
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05/30/14

Find y if x^2-6x+4=(x-3)^2+y
A 9 B -5 C 3 D 5
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05/29/14

results of equation have changed
Since  40+40x0+1= 41 using pemdas you have changed the equation to the wrong answer. example: If person A gives you 40 apples and person B adds 40 to it but person C takes 80 away but person D... more
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05/27/14

Math word problem involving miles, speed, and time.
The subway train offers access to all 12 intersections downtown. If every intersection is .75 miles apart and the train travels at 20 mph and spends 45 seconds at every stop to unload and onboard... more
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05/26/14

width of a rectangle
the sum of a rectangle is 7 feet less than its length If the area of the rectangle is 170 square feet then find the width
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05/26/14

Four ppl spent was $90 and that each of them had spent exactly 1/3 of the total. How can this be?
Two mothers and two daughters went shopping yesterday. As they went home they added things up and discovered that the total amount spent was $90 and that each of them had spent exactly 1/3 of the... more
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