Monday

September 26, 2016
**Math**

The sound intensity of a soft whisper is about 1/200000 of the sound intensity of a shout. What is the decibel level of a whisper if a shout has a loudness level of about 85 dB? L = 10log(i1/10^-12)

*Thursday, July 14, 2016 by Bob*

**Math **

Write an equation for a log functions base 2 whose graph has the following properties: vertical asymptote of x=-6 Domain of x<-6 Passing through (-8,3)

*Thursday, July 14, 2016 by Stacy*

**Strayer Math**

Latoya ran for president of the chess club, and she received 18 votes. There were 40 members in the club. What percentage of the club members voted for Latoya?

*Thursday, July 14, 2016 by Pearl*

**Math**

A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C. 345 D. 452 E. 610

*Thursday, July 14, 2016 by Anonymous*

**Math**

A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C. 345 D. 452 E. 610

*Thursday, July 14, 2016 by Anonymous*

**MATH**

true or false: log (x-y) = log (x) - log(y) I don't know the the first part, but looking at the second part, wouldn't log (x) - log (y) = log x/y so based on that the first part is false?

*Thursday, July 14, 2016 by Redgy*

**Math**

A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many centimeters does the needle ...

*Thursday, July 14, 2016 by Anonymous*

**MATH**

if log_a 3 = log_b 27 then show that b=a^3 log_a mean log base a.

*Thursday, July 14, 2016 by Anonymous*

**math**

A isosceles right triangle has leg of 15. What is its area

*Thursday, July 14, 2016 by jason*

**Math**

Write an equation for a log functions base 2 whose graph has the following properties: vertical asymptote of x=-6 Domain of x<-6 Passing through (-8,3)

*Thursday, July 14, 2016 by Stacy*

**Math**

A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many centimeters does the needle ...

*Thursday, July 14, 2016 by Anonymous*

**MATH**

Suppose the annual expected mortality rate from coronary disease is 500 per 100,000 individuals. In a specific community of 600,000 individuals, how many deaths are expected to be attributed to coronary heart disease over a one year period? my work: 600,000/100,000=6 6x500= ...

*Thursday, July 14, 2016 by Redgy*

**Math(help please)**

Alexis has a pencil bag containing one of more of each of the following: red pens, blue pens, mechanical pencils, and black markers. He knows that there is a 4% chance he will pull a red pen out of the bag if he chooses randomly. What is the number of total pens, pencils, and ...

*Thursday, July 14, 2016 by Anonymous*

**Math**

Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and forms triangle ABC. What is the measure of the angle between lines b and c? a. 35 degrees b. 45 degrees c. 90 degrees d. 135 degrees e. Can't be ...

*Thursday, July 14, 2016 by Gina*

**Math**

equation log_b a = c. a) If 0 < a < 1 < b, what can you conclude about c? b) If a < 0 < 1 < b, what can you conclude about c? Please help !

*Thursday, July 14, 2016 by Stacy*

**Math **

Mr.Adams had a coin collection including only nickels, dimes, and quarters He had twice as many dimes as nickels and half as many quarters as he had nickels. If the total face value of his collection was $300.00, how many quarters did the collection contain? A) 75 B) 100 C) ...

*Thursday, July 14, 2016 by Emily*

**MATH**

What f-1(x) of f(x)=(1/3)^x

*Thursday, July 14, 2016 by Anonymous*

**Math**

Determine u⋅v if u =5, v =3,and θ =π/3 ,where θ is the angle between u and v. A) 7.50 B) 12.99 C) 10.61 D) 10.25 E) 9.05

*Thursday, July 14, 2016 by Max*

**Math**

On Feb. 27th, 2010, an earthquake of magnitude 8.8 occurred off the coast of Chile lasting up to 3 minutes. Five months later, a 2nd earthquake occurred with magnitude of 5.3. How much more intense was the first earthquake compared to the 2nd earthquake?

*Thursday, July 14, 2016 by Chris*

**math**

Given that Force 1 = 70 pounds and Force 2 = 120 pounds , find the angle between the forces if the magnitude of the resultant force is 90 pounds . Round answer to the nearest degree.

*Thursday, July 14, 2016 by oleg*

**Math**

If I travel 200 feet in 2.92 seconds what is speed I'm traveling at

*Thursday, July 14, 2016 by Anonymous*

**Math**

Mapping Notation for y=2log _3(-3x +9)-2 log_3 mean log base 3

*Thursday, July 14, 2016 by Matt*

**Math**

For what value of k will the following function have y-intercept of 5. log{base 3} (-5x +k^2)-1

*Thursday, July 14, 2016 by Stacy*

**Math **

After solve a function I get these X>_-1(greater than equal to) X>_3 & X>_2?what will be it's domain?

*Thursday, July 14, 2016 by X*

**Math**

In phythagorean triplet how to find numer 7

*Thursday, July 14, 2016 by Monesh*

**Math**

If a family plans to have four kids what is the probability that they will have at least one girl

*Thursday, July 14, 2016 by Cathy*

**Math**

Three dozen eggs, 25% broken. How many left? ( Answer with working outs) please.

*Thursday, July 14, 2016 by Luciana Brix*

**math**

a number rounds off to 4000.The digit in the hundreds place is twice the digit in the tens place.The sum of the digits is 12.The number uses only two different digits.Find the number.

*Thursday, July 14, 2016 by rosemarie*

**math**

What is the volume of a balikbayan box with a length of 21√5 inches, width of 12√3 inches and a height of a 25√3 inches? Thank youu!!

*Thursday, July 14, 2016 by Ari*

**Math**

When an object is droped from a certain height , it's distance from the starting point varies as the square of the time it has been falling . If a body falls through 288m in 6 seconds then what is the distance covered by the object in the tenth second?

*Thursday, July 14, 2016 by Sarvesh*

**Math**

If the battalion of soldiers is formed into a solid square,there would be sixteen fewer men in the front than there would be if they were formed into hollow square four deep. What is the required number of the soldiers.?

*Thursday, July 14, 2016 by Nitesh *

**Math**

The expenses of orphanage are party constant and partly vary as the number of the boys in the orphanage. The expenses were Rs. 10,000 for 150 boys and Rs. 8,400 for 120 boys . Find the expenses for 330 boys.

*Thursday, July 14, 2016 by Madhura*

**Math**

The ratio of a triangle's sides is 4:3:6. If the length of the hypotenuse is 1/4, what is the value of the length of the short leg of the triangle subtracted from the length of the long leg of the triangle? Help please?

*Wednesday, July 13, 2016 by Jane*

**Math (PLEASE HELP!)**

A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom of the wheel from a ramp which is one metre above ground level. a) If the height of the passenger is measured from the ground, determine an equation for the height of the ...

*Wednesday, July 13, 2016 by Anonymous*

**Math**

Daniel drives 30 mph to the toy store and 45 mph back home, taking the same route both ways. If the total trip took two hours, how many total miles does he drive on the round-trip from home to the store and back? Can you please explain how to do it?

*Wednesday, July 13, 2016 by Gina*

**Math (PLEASE HELP!)**

How do you solve sin2θ−cosθ=0 between -pi/2 less than or equal to θ less than or equal to 3pi/2?

*Wednesday, July 13, 2016 by Anonymous*

**math**

The side of a triangle are in the ratio 2:3:4.If the shortest side measure 6cm,what is the perimeter of the triangle?

*Wednesday, July 13, 2016 by pratikshya*

**Math (PLEASE HELP!)**

A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom of the wheel from a ramp which is one metre above ground level. a) If the height of the passenger is measured from the ground, determine an equation for the height of the ...

*Wednesday, July 13, 2016 by Anonymous*

**Math**

The Fahrenheit temperature of a certain city has never dropped below 50 degrees how would you describe this using Celsius temperature and has never dropped below how many degrees Celsius simplify your answer type an integer or decimal rounded to the nearest tenth as needed

*Wednesday, July 13, 2016 by Carol*

**math**

Felicia left Rome at 8am and drove her Ferrari at 8mph from Rome to Sorrento. she then took the boat to Capri for the day, returning to Sorrento 5 hours later. on the return trip from Sorrento to Rome she averaged 60mph and arrived in Rome at 8pm. How far is it from Rome to ...

*Wednesday, July 13, 2016 by laiche*

**math**

Robin flies to San Francisco from LA in 4 hours. she flies back in 3 hours. if the wind is blowing from the north at velocity of 20mph during both flights, what was the airspeed of the plane (it's speed in the air)?

*Wednesday, July 13, 2016 by brat*

**math**

show solution. in a certain eatery, there are 5 glass racks having 24 glasses and 8 left over. The answer says there are 130 glasses in all.

*Wednesday, July 13, 2016 by shawn*

**Math**

If a run is 10 feet and the slope 1% what is the rise?

*Wednesday, July 13, 2016 by Mark*

**Math**

A minor league baseball team plays 95 games in the season if the team won 15 more than three times as many games as they lost how many wins and losses did they the team have I need the losses

*Wednesday, July 13, 2016 by Carol*

**math**

solve (x-1) (d^2 y)/〖dx〗^2 +2dy/dx=0 using series method

*Wednesday, July 13, 2016 by yusuph*

**math**

Write 3.027 in expanded form

*Wednesday, July 13, 2016 by Anonymous*

** Math**

If 18 gallons of gas costs X dollars what is the expression to represent the cost in dollars of 3 gallons

*Wednesday, July 13, 2016 by Angie*

**math**

What is the height of a cylinder with a volume of 384π cubic inches and a radius of 8 inches? Round to the nearest tenth of an inch.

*Wednesday, July 13, 2016 by anon*

**Math**

Given that Force 1 = 70 pounds and Force 2 = 120 pounds , find the angle between the forces if the magnitude of the resultant force is 90 pounds . Round answer to the nearest degree. A) 48° B) 40° C) 53° D) 45° E) 60° I think it is answer B

*Wednesday, July 13, 2016 by Katya*

**Math**

Mrs. Kumar bought 27 apples. She bought 15 more oranges. How many oranges did she buy?

*Wednesday, July 13, 2016 by Primary 1 Math*

**math**

Find the slope of the line whose parametric equations are x=2-t and y=1=2t fi this line passes through (2,y) find the value of y compute also the value of t

*Wednesday, July 13, 2016 by johnel*

**Math**

A student was asked to divide a number by 12. Instead he divided the number by 24. In doing so he got a quotient which was 16 less than the original number. Which of the following cannot be the value of that number. A) 394 B) 398 C) 396

*Wednesday, July 13, 2016 by Madhura*

**Math**

1/11 of 132 Evaluate

*Wednesday, July 13, 2016 by Kavi*

**math**

a messenger traveling 65 miles per hour pursues a truck which has a start of 2 hours and overtakes it in 3 hours. find the truck speed.

*Wednesday, July 13, 2016 by jessa*

**Math**

The sum of two decimals is 100. Their difference is 18.50. What are the numbers?

*Wednesday, July 13, 2016 by alzo*

**Math**

A court is to be surrounded by plastic stripping 30m long. One side of the court does not need the stripping because it is a brick wall. What must be the dimensions of the court in order to obtain a maximum area? What is the maximum area? Thank you! :)

*Wednesday, July 13, 2016 by Gennelle*

**Math**

Find two numbers which have a difference of 7, and a product that is a minimum. Thank you! :)

*Wednesday, July 13, 2016 by Gennelle*

**Math**

laura spent 20 percent of her money on a dress. she spent 2/5 of the remainder on a book. she had $72 left. how much money did she have at first?

*Wednesday, July 13, 2016 by Stephanie *

**math**

find the value of k so that k-3,k+1,4k-2 form a geometric sequence.

*Wednesday, July 13, 2016 by peejhay*

**math**

A boy reaches his school 1.4km away in 1hr 40mins at what speed does he travels?

*Wednesday, July 13, 2016 by karan*

**Math**

Find a polynomial of degree 3 with real coefficients and zeros of -3, -1, and 4, for which f(-2) = 24.

*Tuesday, July 12, 2016 by DeniseG*

**math **

Are trigonometric functions taught in 11th grade, if so ,is it wrong that i wasn't tought that topic in 11th grade????plz help!!!!

*Tuesday, July 12, 2016 by Lauren*

**Math**

2x+9square root of x-5=0

*Tuesday, July 12, 2016 by Anonymous*

**Math**

Square 40 acres of land must be fenced and a rectangular 40 acres of land must also be fenced. Witch of the 2 will use more fencing?

*Tuesday, July 12, 2016 by Reynhard*

**MAth**

what is the greatest common factor of the terms of 24m^9-27m^7-24m^5

*Tuesday, July 12, 2016 by Shyan*

**bus math**

Solve the problem. Express answers as a percent rounded to the nearest tenth. 20) Complete a vertical analysis on the balance sheet for Jake's Janitorial Service for December 31 of last year. The company assets are cash $20,000, accounts receivable $48,000, merchandise ...

*Tuesday, July 12, 2016 by damerius*

**math**

A home with a market value of $320,000 is insured for $288,000 in a policy that contains an 80% coinsurance clause. Find the part of a loss due to fire that the insurance company will pay

*Tuesday, July 12, 2016 by damerius*

**Math**

Amy have 69 shells she put them into 8 groups how many shells are there? 8.625

*Tuesday, July 12, 2016 by kate*

**Studying for math test**

Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent. (sin x + cos x) ^2 a. 1+2sinxcosx b. sec^2x−tan^2x+2cosxsinx c. sec x + 2 sin x/sec x d. sin^2x+cos^2x e. 1+2cos (pi/2 -x) cosx

*Tuesday, July 12, 2016 by Lottie*

**Math**

Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second

*Tuesday, July 12, 2016 by Ed*

**math**

Emmanuel wants to tile his rectangular floor. one of which is larger than the other. a)what area will be covered by the "8x8"tile? "16x16" tile?

*Tuesday, July 12, 2016 by Anonymous*

**Math - Studying for Pre Calc exam!**

Approximate the solutions (to three decimal places) of the given equation in the interval (- pi/2, pi/2) 6 sin 2x − 8 cos x + 9 sin x = 6 Can you help with this please? I am studying for my Pre Calculus 1 exam and am stuck on this question...! The answer options are a. x...

*Tuesday, July 12, 2016 by Lottie*

**math**

Find the orthogonal trajectories of family of the circle x2+y2=a2 where a is a parameter

*Tuesday, July 12, 2016 by mahesh*

**Math**

Find all solutions of the given equation in the interval [0, 2pi) cos x/2 - sin x = 0 Hi, I am struggling with this question. Can anybody help me please? Thanks!

*Tuesday, July 12, 2016 by Lottie*

**math**

If 3 times a positive number is added to the half of its square the result is 8 find the number

*Tuesday, July 12, 2016 by md nasim*

**math**

dy/dx=xyforx=1.4 intially x=1 y=2(take h=0.2

*Tuesday, July 12, 2016 by savan*

**Math Please Help**

The function Q(x) has been transformed from the function f(x) = x^4. The mapping rule for the function can be written as (2x + c, 4y + d). If the coordinate(1/2 ,1/16) on the function f(x) is transformed to (3,5) on Q(x), determine the value of c and d.

*Tuesday, July 12, 2016 by Squad*

**algebra 2**

x2 + 2x – 10/ 3x – 15 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated in ...

*Monday, July 11, 2016 by peaches*

**algebra 2**

16t^2 – 1/64 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated in the example). ...

*Monday, July 11, 2016 by peaches*

**Math**

The temperature deceased due to increase in altitude at the rate of 8 degrees Celsius per 1500 m the temperature at 4500 m above the ground level is 4 degrees Celsius find the temperature at ground level and at an altitude of 9000 m

*Monday, July 11, 2016 by Anonymous*

**MATH**

A beautiful Princess is locked inside the Castle. A Moat 15 metres wide surrounds the Castle. A Knight is attempting to rescue the Princess but he only has two planks of wood, both 14.5 metres long. How can the brave Knight bridge the Moat and rescue the Princess. Draw ...

*Monday, July 11, 2016 by Sandy*

**Math**

Write the equation of a rational function in the form of 𝑓(𝑥) = 𝑎𝑥+𝑏/𝑐𝑥+𝑑 if the vertical asymptote is x =5, the horizontal asymptote is y=2, the x-intercept is (-1/2 , 0) and the y-intercept is (0,-1/5 ).

*Monday, July 11, 2016 by Squad*

**Math Please Help ASAP**

The function 𝑄(𝑥) has been transformed from the function 𝑓(𝑥) = 𝑥^4 . The mapping rule for the function can be written as (2𝑥 + 𝒄, 4𝑦 + 𝒃). If the coordinate(1/2 ,1/16) on the function 𝑓(𝑥...

*Monday, July 11, 2016 by Matt*

**Math - Transformations**

State the transformation for g(x) = -2 (2x - 4)³ - 1 Would it be a vertical stretch by a factor of 2 a reflection in the x-axis a horizontal stretch by a factor of 1/2 a translation 4 units right and 1 unit down Am i right?

*Monday, July 11, 2016 by Jen*

**math**

A theater group made appearances in two cities. The hotel charge before tax in the second city was $500 lower than in the first. The tax in the first city was 6%, and the tax in the second city was 4.5% The total hotel tax paid for the two cities was $292.50 . How much was the...

*Monday, July 11, 2016 by jazmine*

**math**

Two mechanics worked on a car. The first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they charged a total of $2025 . What was the rate charged per hour by each mechanic if the sum of the two rates was $205 per hour

*Monday, July 11, 2016 by jazmine*

**MATH**

Rewrite equation w=exp(2y+8z-3x) as the product of three terms. note that writing exp(a) is the same as writing e^a

*Monday, July 11, 2016 by DANIELLE*

**math please help?! studying for test!!**

If x = 9tanθ, use trigonometric substitution to write square root 81 + x^2 as a trigonometric function of θ, where -pi/2 < θ < pi/2

*Monday, July 11, 2016 by sophie*

**math help?!**

If x = 6sinθ, use trigonometric substitution to write square root 36-x^2 as a trigonometric function of θ, where where 0<θ< pi/2

*Monday, July 11, 2016 by sophie*

**MATH**

SIMPLIFY THE FOLLOWING EXPRESSION: Z=LOG(E^5Y) i MOVED THE EXPONENT TO THE FRONT: Z=5YLOGE IS THIS CORRECT?

*Monday, July 11, 2016 by DANIELLE*

**MATH**

REWRITE EQUATION W=EXP(2Y+8Z-3X) AS THE PRODUCT OF THREE TERMS

*Monday, July 11, 2016 by DANIELLE*

**Math **

The function −2𝑓(2𝑥 + 4) − 1 has been transformed from the graph of 𝒇(𝒙) = 𝒙^𝟑 Write the equation for the transformed function.

*Monday, July 11, 2016 by Jen*

**math**

Write the given expression as the tangent of an angle. tan 7x − tan x/ 1 + tan 7x tan x

*Monday, July 11, 2016 by terry*

**math**

Write the given expression as the cosine of an angle. cos 60° cos 65° − sin 60° sin 65°

*Monday, July 11, 2016 by terry*

**Math**

Describe the end behaviour of 0.5(x-2\)^2\(x+1)(x-5)^3

*Monday, July 11, 2016 by Matt*

**Math**

A polynomial function with a degree of 6 has the zeros of 𝑥 = 2 (order 2), 𝑥 = −1 (order 1) and 𝑥 = 5 (order 3). Write a general formula for a family of functions that share the same properties as this function. Please HELP!

*Monday, July 11, 2016 by Matt*

**math**

A man buys a corporate bond from a bond brokerage house for $925. The bond has a face value of $1000 and a 4% coupon rate paid semiannually. if the bond will be paid off at the end of ten years, what rate of return will the man receive?

*Monday, July 11, 2016 by sheree*

**Math**

Directrix at y=3,axis x=2 Latus rectum 4

*Monday, July 11, 2016 by Josa villa*

**math**

volume of equilateral triangle with and area of 6 sq inches and height of 15 inches

*Monday, July 11, 2016 by taylor*

**math **

Use a graphing utility to approximate the solutions (to three decimal places) of the given equation in the interval (-pi/2, pi/2) a. 1 b. –1 c. 1/2 d. 2 e. 0

*Monday, July 11, 2016 by megan*