Thursday
January 19, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

Math
The difference between a number and the number that formed by reversing the digits is 36.if the digit at the tens place is twice the digit at the unit's place.find the number
Friday, November 25, 2016 by Anonymous

Math
using each digit once what is the largest odd numbers that can be formed using 6'8'and 5.. ano sagot insan.. hehe
Friday, November 25, 2016 by MArj

Math
A coin is tossed and a three-sector spinner is spun. What are the chances of getting 1 Heads and a 2? *Please answer with a simplified fraction*
Friday, November 25, 2016 by Adira

Math
An exercise book costs $0.9 and a pencil cost $0.6. What is the total cost of buying: 2 exercise books and y pencils in terms of Y?
Friday, November 25, 2016 by Dora

math 113
an object is thrown upwards and its height h(t) in meters after t seconds is given by the equation h(t)=1+4t-5t^2 .when the object hit the ground.
Friday, November 25, 2016 by chrop

math,physics,chemisty,biology
the number of moles of H2O2 required to completely react with 400ml of 0.5N KMnO4 in acidic medium are
Thursday, November 24, 2016 by Chanchal

Math - Antiderivatives/Integrals
Find the function with derivative f′(x)=e^(9x) that passes through the point P=(0,4/9).
Thursday, November 24, 2016 by Kid

Math
A decorative pottery bowl with a diameter of 30 cm is used as a garden ornament . A rain shower fills it with water to a maximum depth of 7 cm. The bowl is slowly tipped to remove the water. What angle will the rim of the bowl make with the horizontal when the water begins to ...
Thursday, November 24, 2016 by Carrie

Math
If the product represented by 128! is divisible by 18^n, what is the largest possible value of n?
Thursday, November 24, 2016 by Marley

Math
The legs of a right triangle are 6 cm and 18 cm. The hypotenuse of a similar triangle is 24 cm. What is the area, in cm squared, of the larger triangle?
Thursday, November 24, 2016 by Pravin

math
Can I double check this I'm not entirely sure if my answer is correct. What is the smallest perfect square that has a factor of 90. 8100?
Thursday, November 24, 2016 by Maryam

math-factors and multiples
GCF of 40a^3 and 32a^2
Thursday, November 24, 2016 by Maryam

math
LCM of 10a and 15a^2 Factors of 10a are 10,a,2,5 but the prime factors are 2,5,a Factors of 15a^2 are 15,a^2, 3,5,a,a Prime factors are 3,5,a,a Common between two are 5 and a So is the LCM of 10a and 15^2 5a?
Thursday, November 24, 2016 by Maryam

math
Solve and graph the inequality 5 less than and equal to m/-3+18
Thursday, November 24, 2016 by shima

math
Given f(x)=3x+2 and g(x)=4-5x Find a) f(x)-g(x) b) f(x)÷g(x) c) f(x)×g(x) d) 2×f(x)
Thursday, November 24, 2016 by shima

math
Write an equation in slope-intercept form for the line that passes through the given point(-1,2) and is parallel to the graph of the given equation y=1÷2x-3.
Thursday, November 24, 2016 by shima

Math
Julie scored 50 points in a game. How many points did Leonora score if she scored p points less than Julie in terms of p?
Thursday, November 24, 2016 by Clara

Math
How to simplify this ratio (1/2):(1/3)
Thursday, November 24, 2016 by senti

math
A trader bought 30 baskets of potatoes and 100 baskets of oranges for $2450. She sold the potatoes at a profit of 40% and the oranges at a profit of 30%. If her profit on the entire transaction was $855, calculate the: 1) Cost price for a basket of potato; 2) Selling price of ...
Thursday, November 24, 2016 by somay

Math
Evaluate: (7-8*(-1))*-1^2006=
Thursday, November 24, 2016 by Cici

math
A bus contain 42 passengers the number of male is 5 times the number of female how many famale in the bus
Thursday, November 24, 2016 by Anonymous

math
Determine whether the lines y=8x-5 and y=(-2÷16)x-3 are parallel or perpendicular or neither parallel nor perpendicular.
Thursday, November 24, 2016 by shima

math
25m^6-121m^4
Thursday, November 24, 2016 by shima

Math
John is now 10 years older than Marcus. Three times Johns age 5 years from now will be the same age as Marcus age 5 years ago. Write the equation and solve
Thursday, November 24, 2016 by Ciara

math
Show that -3 is a multiplicative inverse of 17 modulo 26 Started with 17 * -3 = -51 but doesn't seem right? help
Thursday, November 24, 2016 by s17

math
f:x = 2x²+x-6
Thursday, November 24, 2016 by viky

math
A manufacturer produces a standard model and a deluxe model of a 25-inch (in). television set. the standard model requires 12 h of labor to produce, and the deluxe model requires 18 h. The company has 360 h of labor available per week. the plant's capacity is a total of 25...
Thursday, November 24, 2016 by shima

Math
A decorative pottery bowl with a diameter of 30 cm is used as a garden ornament . A rain shower fills it with water to a maximum depth of 7 cm. The bowl is slowly tipped to remove the water. What angle will the rim of the bowl make with the horizontal when the water begins to ...
Thursday, November 24, 2016 by Allen

Math
How do you multiply 12 times 13 step by step step
Thursday, November 24, 2016 by Anonymous

math
Mary is now three times as old as her daughter. Four years ago the products of their age was 40 .calculate their present years
Thursday, November 24, 2016 by dama

Math grade 5, two-part problem
The ratio of the number of alex's beads to the number of betty's beads was 3:4.after alex bought another 72 beads,the ratio became became 3:1. A. How many beads did betty have? B.if alex gave away 80 beads,what would by the new ratio of the number of betty's beads ...
Thursday, November 24, 2016 by Peachie

Math grade 5, two-part problem
The ratio of the number of lisa's pens to the number of adeline's pens was 2:3 at first.after father gave lisa another 16 pens,the ratio became 2:1 A.how many pens did adeline have? B.if adeline gave away 6 pens,what would be the new ratio of the number of lisa's ...
Thursday, November 24, 2016 by Peachie

Math
The ratio of 2 number is 9 and 3 if the sum of two numbers is 72. What is the smaller number?
Thursday, November 24, 2016 by Franckish Jane

math
Use Euclid's algorithm to find a multiplicative inverse of 15 mod 88, hence solve the linear congruence 15x=20(mod 88) So far I have: 88=5x15+13 15=1x13+2 Backwards substitution gives 15v+18w=1 1=15-1x13 =15-1(88-5x15) =15x15-1x88 now very stuck what to do from here:(
Thursday, November 24, 2016 by s17

Math
Triangle ABC has vertices A(-4,-3),B(4,-1) and C(-2,3). Find the length of median CM?
Thursday, November 24, 2016 by Dianne Garcia

math
four times a number increased by 5 is 37 translate this into algebraic equation
Thursday, November 24, 2016 by kent yrell

finite math
If n(B) = 13, n(A ∪ B) = 20, and n(A ∩ B) = 5, find n(A).
Thursday, November 24, 2016 by corey carter

Math
The distance between two stars is 0.009 light years. A light year is equal to 5.88 x 10^12 miles. What is the distance,in miles, between the two stars? Represent your final answer in scientific notation
Wednesday, November 23, 2016 by Stefanie

math!
You have 48 minutes to take an exam of 21 questions. After you finish the first 10 questions, you realize you must answer the remaining questions twice as fast to finish the exam. How many questions per minute were you answering? Also, how many questions per minute must you ...
Wednesday, November 23, 2016 by Lewis

Math grade 9
James and slyvie need to paint the line around the soccer field. To know how much paint to buy they must find out the perimeter of the field. James claims, "I can calcuate the perimeter of the field by using the formula P= 2(l+w) while slyvie says that the correct formula...
Wednesday, November 23, 2016 by Please can someone explain

Math
Consider ∠C such that sin C = 7/25 a) What are the possible quadrants in which ∠C may lie? b) If you know that cos C is negative, how does your answer to part a) change? c) Sketch a diagram to represent ∠C in standard ...
Wednesday, November 23, 2016 by Ahmed

Math
An angle θ satisfies the relation csc θ cos θ = -1. A) Use the definition of the reciprocal trigonometric ratios to express the left side in terms of sin θ and cos θ. B) What is the relation between sin Î&...
Wednesday, November 23, 2016 by Kelly

Math
Bart and Bethany play a game. They each roll a regular 6-sided die labeled 1to 6. Use an outcome table to show all possible outcomes: (2 marks) is the total number of outcomes 12?
Wednesday, November 23, 2016 by maddy

math
Four friends contribute sums of money to a charitable organization in the ratio of 2:4:5:7. if the largest amount contributed is $1.40, calculate the total amount contributed used by the four people?
Wednesday, November 23, 2016 by andrew

math-IS MY ANSWER RIGHT?
Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = ...
Wednesday, November 23, 2016 by Anon

Math
How to you write an equation of a line with no slope and no points?
Wednesday, November 23, 2016 by Janelle

Math
Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = x i + y j + z4 k S is the part of the cone z = ...
Wednesday, November 23, 2016 by Anon

math
How do you use a conversion chart?
Wednesday, November 23, 2016 by noob leaner

Math please explain how to do this
how do I find the value of x in the following: (x-520,000)/[(800,000+880,000)/2]=
Wednesday, November 23, 2016 by Patte

math
what divided by 7 equals 15
Wednesday, November 23, 2016 by alex

math
I think of a number,multiply it by 3 and add 7.i get the Same answer if I multiply the number by 4 and subtract 12.find the number
Wednesday, November 23, 2016 by Juli

Math
The relationship of red ribbons to green ribbons is 10 : 1/4. How mini red ribbons are used for every 4 1/2 green ribbons?
Wednesday, November 23, 2016 by Tina

Math
I am a little unsure of how to answer this question: Write an inequality to represent the limit you may not exceed when spending to make your product. Here's the background information I have. You are going to decide on a summer business to start. Figure out what you will ...
Wednesday, November 23, 2016 by Donut Holstein

Math aglebra
I need help RIGHT NOW!!!!!!!!!!!!!! On the blueprints of Adam's office building, the length of his rectangular office space is 5 1/4 inches. If the actual length of Adam's office space is 10 1/2 feet, what is the scale of the blueprint?
Wednesday, November 23, 2016 by Chelsea

Math
A trapezium measures 9.5cm (b1) 17cm (b2) & 6cm (h). Now, divide the trapezium into a rectangle & a triangle to find their areas. Hence, find the area of the trapezium.
Wednesday, November 23, 2016 by Austin

math
2+3Log a
Wednesday, November 23, 2016 by Collins

Math
The figure is made up of two rectangles measuring 7cm by 3 and a square of side 4cm. Find the area of the figure.
Wednesday, November 23, 2016 by Austin

math
the perimeter of a farm is187.2m .if its width is 39m,then find the ratio between its length and width.
Wednesday, November 23, 2016 by ratios

Math
If a car travels 180km in 4hrs how much time will it take to cover 400km
Wednesday, November 23, 2016 by Mohammed Zayed Ali

MATH
The length of three sides of a triangle are (x+1)cm 2xcm and 3x+1)cm its perimeter is 30cm. Find the value of x and the length of wach sides of triangle
Wednesday, November 23, 2016 by Julaine

Math
Draw four non_collinear points on a paper and draw all possible line segments. How many line segments can be drawn.
Wednesday, November 23, 2016 by Diya

math
8x+9y=40 5x+3y=10
Wednesday, November 23, 2016 by ismail

Math
The number of diagonals D I a polygon of n sides is given in the formula D=n(n-3)/2. Use the formula to find: A. The number of diagonals in a polygon with 9 sides. B. The number of sides of a polygon with 90 diafonals.
Wednesday, November 23, 2016 by Raven

Math
Solve the set of linear equations by the matrix method. a+3b+2c= 3, 2a-b-3c= -8, 5a+2b+c=9, solve for a
Wednesday, November 23, 2016 by Tunde

Math
Consider ∠C such that sin C = 7/25 a) What are the possible quadrants in which ∠C may lie? b) If you know that cos C is negative, how does your answer to part a) change? c) Sketch a diagram to represent ∠C in standard ...
Tuesday, November 22, 2016 by Katie

Math
An angle θ satisfies the relation csc θ cos θ = -1. A) Use the definition of the reciprocal trigonometric ratios to express the left side in terms of sin θ and cos θ. B) What is the relation between sin Î&...
Tuesday, November 22, 2016 by Henry

Math
1) A ladder that is 15m long is leaning up against a building. The ladder makes an angle of 30 degrees with the ground. a) Find an exact expression for the height at which the top of the ladder contacts the wall of the building. 2) A tree is anchored by a guy wire that is ...
Tuesday, November 22, 2016 by Jessica

math
Tanya and Greg are going skiing. Tanya is a seasoned skier while Greg is a novice, he only skied once before. They have a map that provides the coordinates for the top and bottom of each path. Tanya wants to ski the most challenging path while Greg wants to start off with an ...
Tuesday, November 22, 2016 by Hannah

math
There are five different sizes of wood planks used to build a deck. Before starting the project you must compare them and put them in ascending order. 3 ½ ft. 11/3 ft. 3.55 ft. 2.9 ft. 4.1 ft. Help plz.
Tuesday, November 22, 2016 by Hannah

math
Suppose a length of a side of the larger box is 12 inches. How many smaller boxes will fit inside the larger box?
Tuesday, November 22, 2016 by Darlene

Math
the jetstream is a strong wind current that flows across the united states. flying with the jetstream, a plane flew 3,000 miles in 5 hours. Against the same wind, the trip took 6 hours. Find the airspeed of the plane (the speed in still water). My answer: X=550 miles per hour
Tuesday, November 22, 2016 by Jessica

math
if the three sides of an equilateral triangle are 3x + 2, 2y - X and y + 3. find X and y and the perimeter of the triangle. kindly elucidate further on this question
Tuesday, November 22, 2016 by stephen

Math
9:2x=15:12 , so x= ..?
Tuesday, November 22, 2016 by lala

Math
The sum of 24 and Vanessa's age is 40
Tuesday, November 22, 2016 by Chris

math
the sum of two no is 50 .the smaller no is two third of the greater no.. find the no.
Tuesday, November 22, 2016 by Anonymous

Math
If someone uses 1/5 of their allowance then used 1/3 of the amount.what is the number sentence?
Tuesday, November 22, 2016 by Hey

Math
Lisa went to the store and bought 100 pounds of fruit for $100.00. The peaches were $10.00 a pound, the melons were $3.50 per pound, and the apples were $.50 per pound. How many pounds of each did she buy
Tuesday, November 22, 2016 by Melissa

MATH
iF A LIVING ROOM IS 11 FT BY 20 FT AND THE WALL HEIGHT IS 9FT AND 3 WALLS ARE PAINTED,HOW ANY PIECES OF WOOD TRIM BE NEEDED
Tuesday, November 22, 2016 by TRACEY bENBOW

Math
Cheryl does a 2 mile warm up trail run at one rate for half of her workout. In the same amount of time she runs an additional 3 miles at a rate that is 2 mph faster. Find Cheryl's rate for her 2 mile warm-up run and for the 3 mile portion of her run.
Tuesday, November 22, 2016 by Jaime

Math
The producer of a 30 minute tv documentary about world war 1 divided it into two parts. four times as much program time was devoted to the causes of the war as to the outcome. how long is each part of the documentary?
Tuesday, November 22, 2016 by Carly

10th Grade Math
6. Which three lengths CANNOT be the lengths of the sides of a triangle? A.25 m, 16 m, 10 m B. 15 m, 13 m, 12 m C. 18 m, 5 m, 10 m D. 8 m, 8 m, 15 I think its A And if I'm wrong please explain the answer
Tuesday, November 22, 2016 by Lilly

Math iniqualties and versitiles
3(4+5+6)=(3*4+3*5+3*6)=45 3(4+5+6)=3(15)=45 What are the ways to calculate these equations with distributive property?
Tuesday, November 22, 2016 by Lucy Plz Help me

math
Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make?
Tuesday, November 22, 2016 by Anonymous

Math
Explain how you can tell if your estimate answer is greater or less than exact answer to a multiplication problem
Tuesday, November 22, 2016 by Honest

Math
16 students have registered for a summer sports camp. they are to be divided into either a swimming or a tennis activity, with no more than 1- students in either group. in how many ways could the group in the tennis activity be chosen?
Tuesday, November 22, 2016 by HELP PLEASE

Math
A movie theater sold 3 adult tickets for every 5 children tickets. They sold 180 more children tickets than adult tickets. How many children tickets were sold and how many adult tickets were sold?
Tuesday, November 22, 2016 by Anonymous

Math
In Mrs. Wallace's science class one half of the students are boys of the boys 1/8 or left-handed what fraction of the students and Mrs. Wallace's science class are left handed
Tuesday, November 22, 2016 by Yfgjugfhuu

Math
How many different integers represent the sum of two or more members of the set {-4,-3,-2,-1,0,1,2,3,4}?
Tuesday, November 22, 2016 by Anonymous

Math
Use Stokes' Theorem to evaluate C F · dr where C is oriented counterclockwise as viewed from above. F(x, y, z) = xyi + 5zj + 7yk, C is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 9.
Tuesday, November 22, 2016 by Anon

Math
Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = x2z2i + y2z2j + xyzk, S is the part of the paraboloid z = x2 + y2 that lies inside the cylinder x2 + y2 = 25, oriented upward.
Tuesday, November 22, 2016 by Anon

Math
Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = 2y cos z i + ex sin z j + xey k, S is the hemisphere x2 + y2 + z2 = 49, z ≥ 0, oriented upward.
Tuesday, November 22, 2016 by Tay

Math
If you have 150 pages in a book and you have read one thrid of it how many.pages have you read so far
Tuesday, November 22, 2016 by Kiara

math
express a/5 +4/b as a single fraction
Tuesday, November 22, 2016 by carston

Math
In a class 3/4 of the students in a class are girls. There are 28 boys. What fraction of the class are boys? How many students are in the class?
Tuesday, November 22, 2016 by Tiki

Math
The number is a 2 digit number greater than 5 and 12 the number is not divisible by 2 both digits of this number are the same the sum of the digits of this number is one less than half the number of days in november
Tuesday, November 22, 2016 by Amberlea

Math
The back-to-back stem-and-leaf plot below shows the ages of patients seen by two doctors in a family clinic in one day. Compare the ages of the patients of doctor 1 and doctor 2 using the mean and the median of each data set. Doctor 1 Doctor 2 | 3 | 5 9 2 0 | 2 | 0 0 2 3 6 8 7...
Tuesday, November 22, 2016 by Embershy

Math
3. The stem-and-leaf plot below could NOT represent which of the following? 1 l 1 2 2 7 7 2 l 4 4 7 3 l 3 5 6 8 9 Key: 3 l 5= 3.5 A. The average number inches of rain in June B. The height of plant seedlings, in inches*** C. The weight oh phonebooks, in pounds D. The height of...
Tuesday, November 22, 2016 by Embershy

MATH
What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number.
Tuesday, November 22, 2016 by Steve

Math
What is the result of converting 1500 yards into miles?
Tuesday, November 22, 2016 by Eric

Math (please check my answer!!)
What other information is needed to prove that the two triangles congruent by SAS? Picture description: there are two triangles showing line LT = line MQ and L=M A. <T = <Q B. <G = <N C. Line GT = line NQ << D. Line LG = line MN
Tuesday, November 22, 2016 by Sara

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