# Math

Newest questions and responses by Math-
## math

what is 57% of 11?

*asked on November 28, 2018* -
## Math

If the average of a, b, and 7 is 13; what is the average of a + 3, b - 5, and 6?

*asked on October 20, 2018* -
## Geometry

In a triangle, segments AB and AC are trisected, and D is the midpoint of BC. If the area of Triangle ABC is 630 cm^2, then the area of the section marked x, in cm^2, is?

*asked on October 18, 2018* -
## Trigonometry

Q P

*asked on October 15, 2018* -
## math

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

*asked on October 14, 2018* -
## 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

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

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

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* -
## Anonymous

The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92

*asked on May 3, 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 2, 2018* -
## Math

The following table compares the speed you drive in km/h to the fuel economy in km/L. Find the speed you need to travel to max your fuel economy. Speed 24 32 40 48 56 64 72 80 89 97 105 113 Fuel Economy 9.48 10.84 11.69 12.33 12.24 12.75 12.71 12.84 12.92

*asked on May 2, 2018* -
## math

Pat has 4 1/2 feet of fabric each piece is 9 inches how man pieces can pat cut

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

Amanda cuts of 45-cm ribbon into two pieces in the ratio of 4:5 find the length of the shorter piece.

*asked on March 6, 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* -
## Economics

Can anyone walk me through the solution of this problem? 1/2(1600/E)^1/2*50=? Thank You

*asked on February 15, 2018* -
## geometry

im not that good at geometry i need some one to check this for me XY bisects AB at point g which of the following is true about point g a. g is the mid point of AB b. g is the mid point of XY c. g is the mid point of AB and XY d. none of these*

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

On Friday Naomi walked 3/4 of a mile. On Saturday she walked 1 2/3 of a mile On Sunday she walked 2 3/5 of a mile. How many miles did she walk in total?

*asked on February 4, 2018* -
## science

What are the differences between aa lava and pahoehoe lava? What are the similarities between these two types of lava?

*asked on February 2, 2018* -
## 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

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

13. solve the equation 4 2/5x = 12 1/10 A.7 7/10 B.2 3/4-My Answer C.2 1/2 D.4/11 Please help!!!

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

Kevin moved from a city to a small town. The population of the city was 6 x 10^5, which is about 15 times a great as the small town. Write an expression in scientific notation that represents the population of the small town. I got 4 x 10^4? Please explain

*asked on January 10, 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

A school wants to build a fence to enclose a rectangular 4-sided playground of 144m^2. What is the min cost for a fence if it costs $5.70 per meter of fencing? 2. The principal checks the budget an sees that only $228 is available for the purchase of

*asked on December 6, 2017* -
## math

3(y + 1) for y = 2 A 6 B 9*** C 7 D 8 If anybody has taken this test, it would be great if you could help me on some other answers in this test.

*asked on November 27, 2017* -
## math

Solve each linear system. Verify each solution by substituting the coordinates of your solutino into both equations. a) y = -x and y = x - 6 b) x - y = 8 and x + 2y = 2

*asked on November 13, 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 9, 2017* -
## 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

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

The cost of 1lb of strawberries is a dollar more than the cost of 1lb of grapes. If ms. A bought 2lbs of strawberries and 5lbs of grapes for $12.50. What is the cost of the fruits.

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

32-q+0.25q=15.50 Can someone explain how to solve this?

*asked on October 10, 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

5/8 + 7/12

*asked on September 23, 2017* -
## math

Write y to the power of -4 as a power with only positive exponents. Thanks need help on this question

*asked on September 22, 2017* -
## math

Differentiate s=(2-t)^2 with respect to t

*asked on September 16, 2017* -
## 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* -
## Math

A car dealer purchases 40 new cars at 6,500 each. He sold 40% of them at 8,000 each and the rest of them at 9,000 each. What is his total profit?

*asked on July 31, 2017* -
## math

solve y=0.04x^2+8.3x+4.3

*asked on May 25, 2017* -
## math

1.one more than 3 tens 2.one less than four times five 3.five added to six 4.successor of 28 5.two more than two times tens 6.the greatest 1 digit composite number 7.three added to three times three

*asked on May 14, 2017* -
## 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 9, 2017* -
## Math

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

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

Can someone please tell me what is the percentage of 19.24 from 14.00? I would like someone to give the formula of solving this. Thank You!

*asked on April 20, 2017* -
## algebra

Suppose x can be expressed as a function of y by x = 5y − 3. a. How can y be expressed as a function of x? b. What is the relationship between the slopes of the two linear equations? c. How do the x-intercepts and y-intercepts of the two equations

*asked on April 19, 2017* -
## math

round to the nearest hundredths 1.5.

*asked on April 17, 2017* -
## Math

Two business partners, Ellen and Bob, invested money in their business at a ratio of 6 to 7. Bob invested the greater amount. The total amount invested was $260. How much did each partner invest?

*asked on April 17, 2017* -
## math

what can * by -168 and adds to get 21.

*asked on April 17, 2017* -
## Math

Is x+3=2y and x=2y-3 have infinitely solutions or one solution or no solution

*asked on March 30, 2017* -
## Math

I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22,

*asked on March 22, 2017* -
## Math

Construct a right triangle having hypotenuse of length 5.6 and one of whose acute angle measure 30

*asked on March 19, 2017* -
## 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 11, 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 8, 2017* -
## Pam

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

*asked on February 27, 2017* -
## Pam

What is the horizontal asymptote? y=x^2+11x+16/x+8

*asked on February 26, 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 9, 2017* -
## Math

A meteorologist predicted that the downtown area would get 16 inches of snow in a snowstorm. The downtown area ended up getting 13 inches of snow. What was the percent error of the prediction?

*asked on February 8, 2017* -
## Algebra

Use the figure to answer questions 1-3 file:///C:/Users/Student/Downloads/642756-212012-25329-PM-1227809791%20(1).png 1. Name a pair of complementary angles. ∠1 and ∠4 ∠1 and ∠6 ∠3 and ∠4 ∠4 and ∠5 2. If m ∠1 = 53°, what is m ∠4? 53°

*asked on February 2, 2017* -
## math

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

*asked on February 1, 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* -
## Emma

Solve (√6+i)(√6-1)

*asked on November 27, 2016* -
## pre calc

You have a sample of a certain radioactive substance. After two days, thirty percent of the sample has decayed. What is the half-life of the material and how much will have decayed after a week?

*asked on November 23, 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* -
## 2nd grade math

Please help. I'm confused here's an example: 38+45=? Show how to make one added the next tens number?

*asked on November 3, 2016* -
## Plane Trigonometry

tan A=-4/5;A in Quadrant 2 and cos B=-5/13: B in Quadrant 3. What is the exact value of the expression cos(A+B)?

*asked on November 2, 2016* -
## physics

Given that the carbon atom has a mass of 12 amu, how many carbon atoms are there in a diamond with a mass of 8 g? ....atoms

*asked on November 2, 2016* -
## math

Find the value of K so that x^2-5x+k=0 has one root equal to 4.

*asked on October 29, 2016* -
## Math

A glass containing 250 mL of 80% iodine solution tips over spelling part of its contents. This subsequently replaced by an amount from a mixture of 40% iodine. If a 72% solution is resulted, how much was spilled?

*asked on October 28, 2016* -
## Math

How many kg of pure salt must be added to 8 kg of a 30% solution to obtain a 35% soltution?

*asked on October 28, 2016* -
## 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 27, 2016* -
## pre-calc

|2x+1| greater than or equal to |x-3|

*asked on October 12, 2016* -
## Pre-calc

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

*asked on October 11, 2016* -
## pre-calc

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

*asked on October 11, 2016* -
## pre-calc

Alice walks on a straight line at four miles per hour. Two hours after she begins walking, Bob runs after her at a rate of six miles per hour. How fast (in miles per hour) is Bob gaining on Alice?

*asked on October 11, 2016* -
## pre-calc

We use the same polynomials as in the first question. Suppose that 3x^3 + 2x + 1 = (ax^2 + bx + c)(x+2) + d. Then b is equal to:

*asked on October 10, 2016* -
## Pre-Calc

A force, F, on a body of mass m causes the body to accelerate. Denote the acceleration of the body by a. The relationship between force, mass, and acceleration is F = ma. If we take the unit of mass to be a kilogram, the unit of distance to be a meter, and

*asked on September 30, 2016* -
## pre-calc

The force, F, between two bodies of mass m1 kilograms and m2 kilograms whose centers of mass are a distance of r meters apart is given by the formula F = (Gm1m2)/ r2 where G is the gravitational constant of the universe. What are the units of the

*asked on September 30, 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* -
## Math

In a particular year, a total of 63,172 students studied in two of the most popular host countries when traveling abroad. If 7306 more students studied in the most popular host country than in the second most popular host country, find how many

*asked on September 28, 2016* -
## Pre-calc

Problem 1. Suppose x > 0. Simplify the expression [(x+h)^1/2− (x) ^1/2]/h . For what values of h is this expression defined?

*asked on September 26, 2016* -
## Math

Alice paints at a rate of 10 square feet per minute and Bob paints at a rate of 8 square feet per minute. If they work together, how many square feet can they paint per minute?

*asked on September 25, 2016* -
## 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* -
## 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* -
## geometry

The area of a triangle with sides 10,10,12 is __ sq. units.

*asked on September 16, 2016* -
## lin

the product of the factors of 6

*asked on September 15, 2016* -
## lola

how much bigger than -9 is -1

*asked on September 15, 2016* -
## Math

If there are 5 boys and 7girls, in how many ways can 5 boys and 5girls sit in a round table? Is the ans : 5!*4!*7c5? Reason: since there are 5 boys so (5-1)! And left 5 seats for girls so 7c5 and within the girls theres 5 diffrent ones so another 5!

*asked on September 5, 2016* -
## maths

Different ways of arranging 72 books in equal piles

*asked on August 25, 2016* -
## lauren

$6300 is invested, part of it at 11% and part of it at 77%. For a certain year, the total yield is $565.00. How much was invested at each rate? how much was invested at 11% and 7%? thank you

*asked on August 25, 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* -
## mathematics

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

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

6 red balls and 5white total 20balls how many yellow balls find probility

*asked on July 9, 2016* -
## Maths Year 10

Q) the difference between two numbers is 5. A) if the larger number is k, what is the other number? B) write a simplified expression for the product of both numbers. ??? ty in adv.

*asked on June 25, 2016* -
## Math

Make a table and graph each quadratic function. Use integers from -3 to 3 for inputs. #4- y= -x2 #5- y=2x squared #6- y= -8x squared #7- y= x squared + 2 Make a table and a graph for each function. Use only positive values for x. #10- y= 10/x #11- y= 8/x

*asked on May 11, 2016* -
## Math

In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression

*asked on May 10, 2016* -
## Math

In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression

*asked on May 9, 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 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* -
## math

a die is rolled in such a way that even faces are twice as likely to occur as the odd faces. what is the probability that a prime number shows up when rolled?

*asked on April 26, 2016*