# Math

Popular questions and responses by Math-
## math

can someone help me with Lesson 9: Integers and Algebraic Expressions Unit Test for connection academy help plz

*asked on September 20, 2018* -
## math

a carton has a length of 2 and 1/6 feet, width of 1 and 1/5, and hight of 2 and 1/2 feet. what is the volume of the carton

*asked on August 16, 2019* -
## Math

A user is charged php300 monthly for a particular mobile plan, which includes 100 free text messages. Messages in excess of 100 are charged php1 each. Represent the amount as a function of the number of messages m sent in a month.expressed by the piecewise

*asked on June 10, 2018* -
## math

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit) 2BA +C6D____ 8AD

*asked on December 5, 2013* -
## Math

Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's

*asked on October 22, 2012* -
## math

A circular track is 1000 yards in circumference. Cyclists A, B, and C start at the same place and time, and race around the track at the following rates per minute: A at 700 yards, B at 800 yards, and C at 900 yards. What is the least number of minutes it

*asked on August 20, 2014* -
## math

A pharmacist is to prepare 15 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 7% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock. How much of each type of solution should be

*asked on September 18, 2019* -
## Math

These two scalene triangles are similar with a scale of 5:2. What is true about these figures? A. a/e = 1 B AB/DE = 2/5 C AC/DF = 5/2 D c/f = 5/2

*asked on February 14, 2020* -
## Arithmetic Progression

In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?

*asked on September 17, 2012* -
## MATH PLEASE HELP

Bruce bought four packages of cornbread mix that each weighs x pounds. He also bought a package of biscuit mix that weighs pounds more than one package of cornbread mix. If the total weight of the items that Bruce bought is 31 pounds, what is the weight,

*asked on November 8, 2017* -
## math

if a and b are the roots of the equation x^2-3x+1=0, what is the value of (1/a) + (1/b)? If the function f is defined by f(x) = (x-1)^2 -3, where -1 is less than or equal to x and 3 is greater than or equal to x. Which of the following is the range of f?

*asked on July 22, 2019* -
## math

The sum of 4 consecutive odd integers is -104. Find the integers with x for unknown numbers.

*asked on January 31, 2011* -
## Ana

A group of hikers on a mountain began at an elevation of 3040 feet above sea level and stopped at elevation of 2319 feet above sea level. What was their change in elevation between these points? How can you tell from the change in elevation whether the

*asked on September 9, 2012* -
## jay

The formula for the perimeter of a rectangle is P=2(l+w)P=2(l+w). Solve for w. w=2P−lw=2P−l w=p2−lw=p2−l w=p−l2w=p−l2 w=P2+l D?

*asked on September 21, 2016* -
## jayne

Five socks, colored blue, brown, black, red, and purple are in a drawer. how many combinations of three socks can be randomly selected from the drawer?

*asked on February 9, 2011* -
## Math

1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

*asked on May 8, 2017* -
## Math

A manufacture of a certain commodity has estimated that her profit in thousands of dollars is given by the expression -6x^2+30x-10 where x (in thousands) is the number of units produced. What production range will enable the manufacturer to realize a

*asked on May 26, 2011* -
## math

solve the system of equations using the substitution method. y=2x-5 3x+4y=-9

*asked on September 14, 2020* -
## algebra

In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 9 ounces of a 20% glucose solution. When the test is administered to a child, the glucose concentration must be decreased to 10%. How much 20% glucose solution and how

*asked on September 18, 2019* -
## math

you a framing a picture that is 5 in by 7in. with a 1 inch wide frame. find the perimeter of the outside edge of the frame. explain, pleaswe i know the anser is 32 but why?

*asked on September 6, 2011* -
## algebra

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −1 and 7 highest point has y-coordinate 4

*asked on September 28, 2019* -
## math

Find all solutions of the equation sec^2x-2=0. The answer is A+Bkπ where is any integer and 0

*asked on July 24, 2019* -
## 3rd grade

When you write 2,500 in expanded form, how many addends do you have? 2,000+ 500+0+0 ??

*asked on October 28, 2009* -
## math

Convert: 2.7x10^-3 kg/cm^3 to kg/m^3 0.81 g/cm^3 to kg/m^3

*asked on August 26, 2008* -
## math

x+2y=4

*asked on September 14, 2020* -
## math

some money is shared between Ali,Ben & Carl in the ratio 5:3:2.Ben receives $60.How much money is shared?

*asked on April 10, 2019* -
## mathematics

Khamis earns 55dollars per week working part-time at a book store. He makes one dollar more for each book that he sells. The amount, A (in dollars), that Khamis earns in a week if he sells b books is given by the following function. A(b)=55+6 How much does

*asked on September 13, 2020* -
## mathematics

a1=1 ,an=3an-1+2 for n>2

*asked on July 17, 2016* -
## kayla

A sugar molecule has twice as many atoms of hydrogen as it does oxygen and one more atom of carbon that oxygen. If a sugar molecule has a total of 45 atoms, how many are oxygen and how many are hydrogen?

*asked on September 2, 2008* -
## math

k _ 6 > 4

*asked on September 15, 2020* -
## Math

I am a 5 digit number. All my digits are the same and the sum of digits is 40 .

*asked on September 3, 2017* -
## jay

For a trapezoid, the following formula relates the area A, the two bases a and b, and the height h. A=(a+b)2hA=(a+b)2h Solve for a. a=2Ah+ba=2Ah+b a=2A−bha=2A−bh a=2Ah−ba=2Ah−b a=Ah2−b

*asked on September 21, 2016* -
## math

the average attendance of a class from monday to wednesday was 39 and that from wednesday to saturday was 39.5. What was the attendance on wednesday, if the average attendance from monday to saturday was 40 I did this:- m+t+w/3=39 w+Th+F+S/4=39.5

*asked on September 7, 2014* -
## math

A college student receives an interest-free loan of $10,200 from a relative. The student will repay $200 per month until the loan is paid off. a) Express the amount P (in dollars) remaining to be paid in terms of time t (in months). (Give your answer in

*asked on September 28, 2019* -
## Math

f(x) = 6x^2 + 7x − 20 Find the maximum or minimum value of f(x). (Round your answer to two decimal places.)

*asked on September 28, 2019* -
## Math

A park is 300 yds by 500 yds. There is a 4 wide foot walking path going around the entire perimeter of the park. The rest of the park is green space. How much green space is there in the park?

*asked on March 27, 2019* -
## math

a) 2 hours per day means? less than 2 hours If you were to choose more than 1 hour which of the three would you choose? can you please check the meanings and the question above^

*asked on August 2, 2019* -
## math

mikes truck engine holds 1 1/4 gallons of oil if there are 3 quarts of oil in the engine now how many more quarts of oil does mike need to add to fill the engine capacity? -(hint i gallon is 4 quarts)

*asked on January 12, 2018* -
## math

One half a number minus 6 is 4 . What is the number?

*asked on February 1, 2017* -
## Aria

If a projectile is shot vertically upward from the ground with an initial velocity of 100 ft per sec, neglecting air resistance, its height s (in feet) above the ground t seconds after projection is given by s= -16t^2 + 100t a) After how many seconds will

*asked on October 26, 2016* -
## pre calculus

Use a calculator to find the approximate value of sin-1( 0.635).

*asked on September 20, 2014* -
## Peter

For all positive integers w and y, where w > y, let the operation ☺ be defined by w ☺ y = (2^(w + y))/(2^(w - y)). For how many positive integers w is w ☺ 1 equal to 4? A. More than four B. None C. One D. Two E. Four *I found only 3/5 as the answer

*asked on August 20, 2012* -
## math

what is a word problem for 2x-4=8?

*asked on September 28, 2010* -
## SCIENCE

HEIGHT OF CLASSROOM DOOR

*asked on September 18, 2020* -
## math

solve each system by elimination 15x - y = 3 5x - 10y = 30 im stuck with what to do first

*asked on September 16, 2020* -
## Math

It costs $5 for 1 snow cone. Which function rule correctly relates the number of snow cones purchased, s to the total cost c. A. c=s+5 B. c=5s C. c=s÷5

*asked on May 16, 2019* -
## math

Which answer best completes the following sentence? Two advantages of a confederation are that it ______ and ______. A: prevents abuse of power by a national government; preserves local identity B: concentrates power in state governments; makes national

*asked on June 4, 2018* -
## Math

The average depth of the water at the end of the dock is 6 feet. High tide occurs at 6 am and low tide occurs at 6 pm. The depth of the water at high tide is 9 feet. The information can be graphed using a sinusoidal function. Your boat needs at least 4.5

*asked on May 1, 2018* -
## MATH

The grocery store parking lot is shaped like a parallelogram. Mr.Campbell is paving the parking lot.The area of the parking lot is 6x^2-3x-3m^2. what are the measures of the height and base of the parking lot. i did 3(2x^2-x-m^2) as my first step but now i

*asked on March 10, 2017* -
## Math

write a function rule for the area of a rectangle or picture frame that has a width of 22 in less than its length use the function rule to find the area of the picture frame the length is 39 inches

*asked on March 7, 2017* -
## Math

The volume of seed in a bird feeder is represented by the equation V = 12(24-h) Q: Make a table of ordered pairs (h,V)

*asked on February 8, 2017* -
## math help please

An art teacher had a total of t markers. He gave an equal number of markers to each of 18 students and had 16 markers left over. Which equation could be used to find n , the number of markers each student received? A t = 18n B t = 34n C t = 18n + 16 D t =

*asked on April 27, 2016* -
## Algebra 1

There are 8 boys on a bus. Each boy has 8 backpacks. In each backpack, there are 8 big dogs. For every big dog there are 8 little dogs. How many legs are there in the bus?

*asked on February 19, 2016* -
## Math

Assume a box contains three red jelly beans and two green ones. We consider the event that a red bean is drawn. Suppose I pick a jelly bean from the box without looking. I record the color but do not put the bean back in the box. Then I choose a bean

*asked on June 28, 2015* -
## math

Two station astronauts will each perform three 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please

*asked on January 29, 2015* -
## math

the average weight of men in a meeting room is 170 pounds, and average weight of women is 130 pounds. if more than 60% of the people in the room are men, which of the following could be the average weight of all the people in the room?

*asked on September 16, 2013* -
## Calculus

A rectangular garden of area 75 sq ft is to be surrounded on 3 sides by a brick wall costing $12 per foot and on one side by a fence costing $7 per foot. Find the dimensions of the garden that the cost of the materials is minimized Read more: A rectangular

*asked on February 21, 2012* -
## math/science

what is dimensional analysis and how does it work?

*asked on November 22, 2011* -
## alicia

Okay, write the expression or inequality. : the difference of a number z and 11 is equal to 35 How would I do that? please explain in great detail

*asked on September 14, 2010* -
## math

What is the first step in solving the linear system {2x − 3y = 11 {−x + 5y = −9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve

*asked on March 31, 2020* -
## Math

Ram bought some bags of cement each 49.7kg. lf the total weight of all the bags is 1143.1kg. how many bag did he buy?

*asked on November 5, 2019* -
## math

Given the vector a= Find the unit vector in the same direction in component form

*asked on August 5, 2019* -
## math

Find the EXACT value of sin(2A) if cscA=5/4 Assume A is a Quadrant I angle in standard position. sin(2A)=

*asked on July 30, 2019* -
## Math

THE 4TH TERM IS 37 AN THE 6TH TERM IS 12 MORE THAN THE 4TH TERM .FIND THE FIRST AN SEVENTH TERM

*asked on July 18, 2019* -
## math

an airline flies two different planes over the same route. THe faster of the two plans travels at 540 miles per hour, and the toher plane tralves at 450 miles per hour. How many more can the faster plane travel in 12 seconds than the slower plane? (Im

*asked on July 17, 2019* -
## Algebra

A flower garden has 3 times as many red roses than pink roses. Twice the number of red roses is the same as four times the number of pink roses increased by 10, how many red roses are there/ I know that X = red roses and Y = pink rose 1. x=3y and 2x=4y+10

*asked on February 25, 2019* -
## math

it took 12 gallons of gas to fill the family car this is 5/6 the amount that the tank can hold how much gas can the tank hold? A.10 Gallons B.14 2/5 Gallons C.12 5/6 Gallons D.13 5/6 Gallons-My Answer Please check thanks:)

*asked on January 12, 2018* -
## math help g

Chris has a square garden with an area of 38.4m^2. He decreases the length of each side by 1.7m to make a smaller garden. What is the closet to the perimeter of the smaller garden?

*asked on December 9, 2017* -
## MATH PLEASE HELP

A forest owned by the Jumbo Lumber Corporation contains 7,820 trees. If Jumbo Lumber cuts down 77 trees every day, which function can be used to find the number of trees, n, left in the forest after t days? A. n(t) = 7,820 - 77t B. n(t) = 7,820t - 77(my

*asked on November 8, 2017* -
## Sam E

Let v(t)=t^2−3t be the velocity, in feet per second, of an object at time t , in seconds. (c) What is the meaning of the quantity v(4)? Select all that apply if more than one statement is correct. A. In how many seconds will the object have moved 4 ft.

*asked on January 28, 2016* -
## math

1. A gallon of a certain kind of paint will cover 224 square feet of surface. In painting two walls; one 36’ by 8’ and the other 24’ by 9’, the number of gallons of paint used is: 2. Susan wants to use blue, yellow, green, and pink paint to

*asked on August 20, 2014* -
## CALCULUS

Starting with the graph of f(x)=5x, write the equation of the graph that results from reflecting f(x) about the line y =4. y=_______? Thank you!

*asked on January 31, 2014* -
## Math

For a 3-person relay race, a coach can choose from 4 of his top runners.how many different 3- person teams can he choose ? Use the act it out strategy.

*asked on September 29, 2011* -
## ALGEBRA

(-13,-15) and (-6,-18) Find the slope, if it exists, of the line containing the pair of points

*asked on April 27, 2011* -
## math

4x-4=3x-2 im confused of the steps/ how to solve. My teacher did it weird so searched google and it was weirder. help is appreciated

*asked on September 23, 2020* -
## math

what did I do wrong my teacher said that hey are all integers, no fractions or decimals solving sytems of equations by elimination -6x - 7y= 20 -5x -8y =8 My work: -5(-6x - 7y= 20) 6(-5x -8y =8) 30x -35y = -100 + -30x-48y = 48 ________________ -83y = -52

*asked on September 18, 2020* -
## math

Expand cos(50°) using a double angle identity

*asked on July 30, 2019* -
## math

How many ways can 3 students be chosen from a class of 16 to represent their class at a banquet? 3,360 1,680 1,120 560 I think its 560.

*asked on March 5, 2019* -
## math

Triangle abc is similar to triangle def, de=4, ab=x, ac=x+2, df= x+6 What does length ab equal?

*asked on December 14, 2018* -
## math

Find the equation of the line in slope-intercept form. b=4 and m=−5

*asked on October 14, 2018* -
## math

There are 120 student in class in which 20 of them are girls and rest boys.if the average marks in math of boys is 65% and that of girls is 80%. find the average marks of the class

*asked on September 6, 2018* -
## math

Both antibiotics were prescribed in high dosage slow release capsules. The function C(x)= 5log(x+1) + 10 models the concentration of levofloxacin in mol/L over a time x, in hours. The function D(x) = 10log(x+1) + 5 models the concentration of metronidazole

*asked on July 8, 2018* -
## Math

Find the function rule (-2,9) (-1,4) (0,-1) (1,-6) (2,-11) I think the function rule is you subtract 5 from the y as you go on.

*asked on March 1, 2018* -
## math

the circumference of s sphere is measured to be 10 cm with an error of 0.4cm.the this radius is used to calculate the area and volume.find the errors in the calculated radius,area and volume

*asked on October 30, 2017* -
## math

Debra has $67 loonies and toonies. If there are 45 coins in total, how many loonies are there

*asked on October 10, 2017* -
## Math

Did John Cena ever do math? It doesn't look like he did..

*asked on April 24, 2017* -
## Pam

How to find the vertex ? f(x)= x^2-3

*asked on February 26, 2017* -
## Math

A class has 30 boys and 25 girls. what is the percentage of boys in the class?

*asked on December 27, 2016* -
## Algebra 1

Suppose y varies directly with x, and y=25 when x=-140. What is the value of y when x=36 A)140 B)165 C)201.6***** D)176

*asked on December 6, 2016* -
## physics

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3?

*asked on November 7, 2016* -
## pre-calc

The radius of the earth is approximately 4,000 miles. The acceleration due to gravity is approximately 32 feet per square second. The mass of the earth is approximately 6 × 10^24 kilograms. Calculate the value of G in units of kilograms, meters, and

*asked on September 30, 2016* -
## Ap series

Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

*asked on August 2, 2016* -
## Semia

A circular sinkhole has a circumference of 75.36 meters. A week later, it has a circumference of 150.42 meters. a. Estimate the diameter of the sinkhole each week. The sinkhole is about ? meters the first week. The sinkhole is about ? meters the second

*asked on May 7, 2016* -
## Math

Ms. Vellake loves to read. She read 522 hours in 29 weeks. If she read an equal number of hours each week, how many hours did she read each week?

*asked on April 8, 2016* -
## Math

Find the inverses of each of the functions below algebraically. a.3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8

*asked on February 3, 2016* -
## Math

10. Suppose the stock of Microsoft increases in value by $5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? A) 37.80 points up B) 30.24 points up C) 22.68 points up D) 15.12 points up

*asked on June 28, 2015* -
## Math

Signals The king has 10 (different) colored flags that he uses to send coded messages to his general in the field. For example, red-blue-green might mean “attack at dawn” and blue-green-red may mean “retreat.” He sends the message by arranging

*asked on June 28, 2015* -
## MNHS_HELP

What is the least number of square pieces into which a cardboard, 13 ft long 8 ft wide, can be cut?

*asked on January 8, 2015* -
## Liz

A rectangular lawn measuring 8m by 4m is surrounded by a flower bed of uniform width. The combined area of the lawn and the flower bed is 165cm^2. What is the width of the flower bed

*asked on August 27, 2014* -
## Algebra

I need some help solving this system of equations: 5x - y = 18 –4x – 2y = –6

*asked on July 20, 2014*