Rachal

The ratio of horseshoes to shamrocks was 11 to 5, and two times the number of shamrocks was 12 less than the number of horseshoes. How many were shamrocks? thank you :)

16 years ago

Multiply. x-(6+2i)][x-(6-2i)] Note that these expressions contain complex numbers. Simplify your answer as much as possible.

14 years ago

The function h is defined by h(x) . 6+x/4+2x Find h(2x)

14 years ago

The function h is defined by h(x) . 6+x/4+2x Find h(2x)

14 years ago

To rent a certain banquet hall, there is a reservation fee of $4200.00 and an additional fee of $180.00 per hour. The Russell family wants to spend at most $5100.00 on renting the hall. What are the possible amounts of time for which they could rent the h...

14 years ago

Solve for v. v+6/5=3/5v-7/3 Simplify your answer as much as possible. This answer cannot be a radical. Thanks

14 years ago

The polynomial function f is defined by f(x)x^4-3x^3-2x^2+4x+5. Use a graphing calculator to find all the points (x,f(x)) where there is a local maximum. Round to the nearest hundredth.

14 years ago

Find the equation of the quadratic function f whose graph is shown below. Ponts on the graph are (-3,-1)(-2,-4) f(x)=

14 years ago

Graph the equations y=2|x-5|+2

14 years ago

Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation. x<2 or x>4 Thanks

14 years ago

Ok I got another one I can figure out The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly apprec...

14 years ago

The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly appreciated. Algebra - helper, Wednesday, Fe...

14 years ago

The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly appreciated. Algebra - helper, Wednesday, Fe...

14 years ago

Find all complex solutions of 4x^2+5x+2=0.

14 years ago

Choose the end behavior of the graph of each polynomial function. A f(x)= -5x^3-4x^2+8x+5 B f(x)= -4x^6+6x^4-6x^3-2x^2 C f(x)= 2x(x-1)^2(x+3) A= falls to the left and rises to the right B= Falls to the left and right C=Rises to the right and left.

14 years ago

The number of bacteria in a certain population increases according to an exponential growth model, with a growth rate of 11% per hour. An initial sample is obtained from this population, and after four hours, the sample has grown to 4130 bacteria. Find th...

14 years ago

I don't even know where to start, teacher gave us this with no direction. Suppose the polynomial R(x)=a9x^9+a8x^8+...+a,x+a0 has real coefficients with a9 cannot equal 0. Suppose also that R(x)has the following zeros: 5, 6, 5+5i. Using this information, a...

14 years ago

Below is the graph of a polynomial function f with real coefficients. Use the graph to answer the following questions about f. All local extrema of f are shown in the graph. I really need help with this one but I can't post the graph.

14 years ago

A 3 inch thick slice is cut off the top of a cube, resulting in a rectangular box that has volume 128in^3 .Round your answer to two decimal places

14 years ago

Charlie is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $127 and allows unlimited mileage. Company B has an initial fee of $55.00 and charges an additional $0.90 for e...

14 years ago

[(x^2-1)/(x-3)] / [(x^2-x-2)/(3x-9)] I get (3x-3/x-2)

14 years ago

Factor: -8w+uw+vu-8v

14 years ago

In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?

14 years ago

The following is a list of 11 measurements: -2,82,87,-1,-51,-2,53,87,-20,32,35 Suppose that these 11 measurements are respectively labeled. x1,x2¡¦¡¦¡¦¡¦¡¦x11.(Thus,-2 is labeled x1,82 is labeled x2 and so on.) find ¢²_(i=1)^11¢Æx1/49 Round your answer to...

14 years ago

Rewrite the expression without using a negative exponent. 4z^-4 Simplify your answer as much as possible. is this right? (1/4z^4)

14 years ago

The length of a rectangle is 1ft more than twice its width, and the area of the rectangle is 28ft^2 . Find the dimensions of the rectangle. l= w=

14 years ago

I don't know how to post some of the question is there a way I can upload it?

14 years ago

Suppose that 34% of the people who inquire about investments at a certain brokerage firm end up investing in stocks, 30% end up investing in bonds, and 35% end up investing in stocks or bonds (or both). What is the probability that a person who inquires a...

14 years ago

You can answer any 8 questions from the 12 questions on an exam. In how many different ways can you choose the 8 questions, assuming that the order in which you choose the questions is irrelevant?

14 years ago

Frank has a 65% chance of receiving an A grade in geology, a 60% chance of receiving an A grade in mathematics, and a 77% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology an...

14 years ago

Write the equation of the graph. Points are (-8,-6) and (0,0). I think you start at rise over run. But I'm confused thanks

14 years ago

Evaluate the expression m^2+93+7 when m=-4 -4^2+9*(-4)+7 does it = -13

14 years ago

Write the equation of the line: The points are at (-8,-6) and (0,0). The line passing through these two points has a y-intercept of 0 since it passes through the origin. The slope is -6-0/-8-0=3/4 How would I finish this? Thanks

14 years ago

Evaluate the following: |6-10|-|5| I get: |-4|-|5| 4-5 Is the answer -1

14 years ago

Solve the inequality for x. 16 <= 4x+4 I get x>=3 Is that right?

14 years ago

f(x)=3 -4|-11+x| -4|-11+3| -4|8| Do I divide or multiply?

14 years ago

Can anybody help me start this? Thanks

14 years ago

Solve for x. log3(x+7)=2-log3(x-1) Write the exact answer using base-10 logarithms.

14 years ago

Solve for x. 14^(-3x)=11^(-x-3) Write the exact answer using base-10 logarithms How do I start this problem? Thank You

14 years ago

A department store is holding a drawing to give free shopping sprees to two lucky customers. There are 15 customers who have entered the drawing: 4 live in the town of Gaston, 6 live in Pike, and 5 live in Wells. In the drawing, the first customer will be...

14 years ago

Suppose that the number of bacteria in a certain population increases according to an exponential growth model. A sample of 2600 bacteria selected from this population reached the size of 2873 bacteria in two and a half hours. Find the continuous growth r...

14 years ago

Use a cofunction to write an expression equal to csc(4ð/11). I need help solving this problem. Thank You

14 years ago

Use a cofunction to write an expression equal to csc(4ð/11). Is the answer csc(4ð/11)= 1/sin(4ð/11)

14 years ago

Owners of a recreation area are filling a small pond with water. They are adding water at a rate of 25 liters per minute. There are 700 liters in the pond to start. Let W represent the amount of water in the pond (in liters), and let T represent the numbe...

14 years ago

How can I find the exact value of Sin 480 degrees? Thanks

14 years ago

I need help solving the two problems below. Thanks For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. Check all symmetries that apply. 1. y=-ã(4-x^(2)) 2. 34x^(2)+12y^(2)=18

14 years ago

Find the reference angle for -144 degrees. I'm coming up with 504 degrees, but I think I'm missing a step.

14 years ago

Find the unit vector in the direction of <-1,-2>. Do not approximate any numbers in your answer. I get (-1/sqrt10) and (-3/sqrt10)

14 years ago

I need help, I don't remember what to do. Find all solutions of the equation in the interval [0,2pi]. (2cosè+sqrt3)(cscè+1)=0 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas.

14 years ago

Find all solutions of the equation in the interval [0,2pi) . cos(theta)=0.7125 If there is more than one solution, separate them with commas. Do not round any intermediate computations, and round your answer(s) to the nearest hundredth. Can someone help m...

14 years ago

Find all solutions of the equation in the interval [0,2pi). sqrt(3)cottheta-1= 0 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas.

14 years ago

A ramp 38' long rises to a platform. The bottom of the platform is 20' from the foot of the ramp. Find x , the angle of elevation of the ramp. Round your answer to the nearest hundredth of a degree. After this question I'm done with TRIG!!! Thanks

14 years ago

Find a polynomial f(x) of degree 3 with real coefficients and the following zeros. -1,3+i f(x)=

14 years ago

The polynomial function is defined by f(x)=4x^4+2x^3-8x^-5x+2. Use a calculator to find all the points (x,f(x)) where there is a local maximum. Round to the nearest hundredth.

14 years ago

The function h is is defined below. h(x)=48x^2+ 12x - 16 Find all values of x that are NOT in the domain of h. If there is more than one value, separate them with commas. I'm lost.

14 years ago

Austin is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $104.00 and allows unlimited mileage. Company B has an initial fee of $65.00 and charges an additional $.60 for...

14 years ago

Miguel is choosing between two exercise routines. In Routine #1, he does only running, burning 15 calories per minute. In Routine #2, he burns 12 calories walking. He then runs at a rate that burns 12 calories per minute. For what amounts of time spent ru...

14 years ago

Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4L , the pressure is 165kPa (kilopascals). What is the volume when the pressure is 60kPa?

14 years ago

The function g is defined below. g(x)=((x)^(2)-9x+14)/((x)^2-11x+24) Find all values of x that are NOT in the domain of g. If there is more than one value, separate them with commas.

14 years ago

Cashew nuts are sold at 15 per kg. Walnuts are sold at 12 per kg. What quantities of each nut would a store owner put into a 100-kg barrel so that it could be sold for 13.20 per kg?

9 years ago

thanks

14 years ago

I got Let t = number of hours hall is rented then 180t + 4200 <= 5100 . Solving for t: 180t <= 900 t <= 5 hours

14 years ago

I don't understand what else do I need to do?

14 years ago

I don't know if this is right but this is what I came up with. f^-1=(-7x+1)/(x-4) domain f(^-1)=(-inf,-7)U(-7,inf) range f(^-1)=(-inf,4)U(4,inf) Let me know if it looks right. Thanks

14 years ago

I want to thank all of you for taking the time to help me understand the problem

14 years ago

Got it thanks

14 years ago

Thanks

14 years ago

a=127 b=55+.9m 127=55+.9m 72=.9m m=80

14 years ago

if the answer should be m<=80 I don't have an equal answer option. Thanks

14 years ago

Well this is a question within the subject I posted. Sorry for not labeling it right

14 years ago

I get add -2,82,87,-1,-51,-2,53,87,-20,32,35=300 300/49=6.12244 Round two decimals = .061244 or 61.22? I don't know which way I should go.

14 years ago

E=IR E=15*8 E=120V -------------- I=E/R I=120/4 I=30 amperes

14 years ago

thank you

14 years ago

Its impossible I have alrady tried and it inserts funky symbols

14 years ago

I get this but i can't remember what else I do The "AND" are is shared. This is the key. Abandoning the lengthy names: A + S = 0.34 ==> S = 0.34 - A A + B = 0.30 ==> B = 0.30 - A S + B - A = 0.35

14 years ago

Thank You

14 years ago

I figured it out. Equation: time + time = 60 hrs. --- x/30 + (1425-x)/15 = 60 --- x + 2*1425- 2x = 30*60 --- -x = -1050 x = 1050mL --- x/30 = 35 hrs (time of 1st storm) ----- (1425-x)/15 = 375/15 = 25 hr (time of 2nd storm)

14 years ago

I got 2/21 thanks for the input

14 years ago

I got: 2873 = 2600 e^(2.5r) ln(2873 / 2600) = 2.5r [ln(2873 / 2600)] / 2.5 = r r=0.0399381 it says to round the percentage to the nearest hundreth. any help

14 years ago

Thank you I see where I got stuck

14 years ago

thats supposed to be a neg in front of the 4 in problem 1.

14 years ago

Thanks!!!!

14 years ago

I now think its 36 degrees

14 years ago

thanks!

14 years ago

The function h is is defined below h(x)=(x+6)/(x^2+9x+8) Find all values of x that are NOT in the domain of h. If there is more than one value, separate them with commas.

14 years ago

Thanks!

14 years ago