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February 27, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

MATH
if Log10^a=4 what is a
Monday, December 26, 2016 by YOUNG FAITH

Math
The difference of two numbers is 4. Three Times the smaller number is 4 more than twice the larger number. Find the numbers.
Monday, December 26, 2016 by Manish

Math
7. A student has received scores of 88, 82, and 84 on three quizzes. If tests count twice as much as quizzes, what is the lowest score the student can get on the next test to achieve an average score of at least 70? A. 13 B. 48 C. 70 D. 96 The correct answer is B, but I would ...
Monday, December 26, 2016 by Juan Nita 3

Math
Prove that (cos2A)÷ ( 1+sin2A) = (cotA -1) ÷ (cotA +1)
Monday, December 26, 2016 by Ismail Abdullah

Math
Roberto's puppy weighs 4.5 pounds at the end of May. During June and July the puppy weighed 18.63 pounds. How much did Roberto's puppy weigh at the end of July? I thought about about dividing 18.63 by 2 and hopefully subtract to get 4.5
Sunday, December 25, 2016 by Nini

Math
29. Which of the following expressions should be placed in each set of parentheses below in order to solve the equation by completing the square? A. B. 3 C. 6 D. 9 The correct answer is D, but I need to learn how to do it and get the right answer. Thanks in advance.
Sunday, December 25, 2016 by Juan Nita 2

Math
26. If , what is ? A. B. 5 C. D. 3 The answer for this question is C. I need to learn exactly how to solve it (step by step) so I can do it on an exam. Thank you.
Sunday, December 25, 2016 by Juan Nita

Math
which is a rule that describes the translation of a point form (4 -8) to (7 -10)? (x,y) --> (x + 3, y - 2) (x,y) --> (x + 3, y + 2)** (x,y) --> (x - 3, y - 2) (x,y) --> (x - 3, y + 2)
Sunday, December 25, 2016 by CONFUSED!

Math
the ordered pairs (2, -21) and (5, -45) are solutions to which of the following equations? y = -8x - 5 y = -8x + 5** y = 8x - 5 y = 8x + 5
Sunday, December 25, 2016 by HELP!

Math
Write 0.583(repeating on 3)as a rational number. Please explain this is complicated
Sunday, December 25, 2016 by Complicated

math-integrating factor
dy/dx - y/x = 0 I got 1/x, but I am not sure if this is right or not.
Sunday, December 25, 2016 by richard

Math
The integral of cot^4cosec^2xdx
Sunday, December 25, 2016 by Trixy

Math
P and Q are two observation posts on the same horizontal ground as the foot R of a vertical pole RT. P is 2.5km south of R. Q is east of R and on a bearing of 065° from P. The angle of elevation of T from P is 40°. Calculate, the angle of elevation of T from Q.
Sunday, December 25, 2016 by Thompson

math
ab and ac are tangents to a circle with centre o. if angle bac is equal to 40 degree, find angle abc and angle acb.
Sunday, December 25, 2016 by sha

math
A long wire of some length is cut into small pieces of 216 cm, leaves a small piece of length of 89 cm. if this part were cut into equal pieces each of 18 cm, the length of the of the leftover wire would be:
Sunday, December 25, 2016 by abc

Math
Find the simple interest on 8,500 rd from 12th October,1999 to 6th march 2,000 at per annum
Sunday, December 25, 2016 by Nikhil

Math
There will be 240 seats on the lawn for graduation. Show all the ways you can make equal rows of chairs if there are at least 5 rows.
Saturday, December 24, 2016 by Daniel

math
F(x, y) represents a velocity field of a fluid over a surface S defined by z = 6 − 3x − 2y. If the magnitude of the velocity in the direction of the unit normal vector, n̂, on S is 3z⁄√14, compute the flux of F(x, y) over the surface S in the first octant oriented ...
Saturday, December 24, 2016 by NEED HELP!!!

Math
Two combines are able to harvest 320 acres of crops in a certain amount of time. How many acres will (a)3, (b)4, (c)6 and (d)7 combines harvest if they work at the same rate for this amount of time?
Saturday, December 24, 2016 by Nina

MATH
given the regression line y=42-3x what number of units are expected to increase in y if x is decreased by 2 units. a)2 b)4 c)6 d)8
Saturday, December 24, 2016 by Ana....

math
if a person buy a book rs 36 the available on discount 40 % find the original price
Saturday, December 24, 2016 by zafar

Math
The lower limit of 25-29 is
Saturday, December 24, 2016 by Hamza

math
The radius of the sphere is 10 units. What is the approximate volume of the sphere? Use π = 3.14 and round to the nearest whole cubic units
Friday, December 23, 2016 by bre

Math
Dylan met his goal today of completing 85% of his field goal attempts. He made 51 field goal attempts. How many attempts has he made this season
Friday, December 23, 2016 by Catherine

math
Will, micah and sue went to dinner. Will paid 1/3 of the dinner bill. Micah and Sue paid in the ratio of 2:5. If Sue paid $6. more than Will, how much did the dinner cost ?
Friday, December 23, 2016 by casey

Pre-calc Math
A tree on a hillside casts a shadow c = 210 ft down the hill. If the angle of inclination of the hillside is b = 21° to the horizontal and the angle of elevation of the sun is a = 51°, find the height of the tree. (Round your answer to the nearest foot.) ________ft
Friday, December 23, 2016 by Anthony

Pre-calc Math
The path of a satellite orbiting the earth causes the satellite to pass directly over two tracking stations A and B, which are 95 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°, ...
Friday, December 23, 2016 by Anthony

Pre-calc Math
Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠B1 is smaller than ∠B2.) a = 78, b = 109, ∠A = 24° Find : ∠...
Friday, December 23, 2016 by Anthony

Math (Problem Solving)
Sasha took in a car loan with a maturity of 5 years in which the first payment was on December 2016. Right after paying the first month on December 15, she made an advance payment for two (2) months and he intends to pay extra month every two months. In addition, she also ...
Friday, December 23, 2016 by Clint

SAT Math
If m percent of 50 is equal to 20 percent of n, then what is the value of m/n? Thank you!
Friday, December 23, 2016 by Kay

math
0º≤A≤90º and 3tan2A = 2tanA + 1
Thursday, December 22, 2016 by Anonymous

SAT Math Question?
Which of the following accurately defines all possible values of p-q if 15≤p≤30 and 7≤q≤19? The answer is -4≤(p-q)≤23, but I'm not sure how. Thank you!
Thursday, December 22, 2016 by Kay

math
x+y+√z=148 x+√y+z=82 √x+y+z=98 find x,y,z. Please give full solution and how to find with complete logic.
Thursday, December 22, 2016 by Muhammad Shaudddin

Math
If a person buy a book for ₹36 which is available on 40% discount off the original price what original price of book
Thursday, December 22, 2016 by Upmanyu

math help
Find the unit vector perpendicular to each of the vectors 2i+j+k and i-j+2k?
Thursday, December 22, 2016 by mis

Math
What are two mixed numbers so that the sum is 7 2/4 and the difference is 5
Thursday, December 22, 2016 by Nathan

math
sasha used 55% of her savings to buy a game. She has $135 remaining. How much was her savings before buying the game?
Thursday, December 22, 2016 by indira

help math
1.Write the ratio in the simplest form 16:24 1:2 4:3*** 3:4 2:3 2.Solve the following proportion p/6 =7/8 p=5.25*** p=8 p-10.5 p=42 3.James has a model helicopter. The model is 8 inches long and 7 inches wide. The actual helicopter is 56 inches long. What is the helicopter's ...
Thursday, December 22, 2016 by rain

math
What is the recursive rule for an=2n+11? a1=13;an=an−1+2 a1=13;an=an−1+11 a1=2;an=an−1+11 a1=11;an=an−1+2
Thursday, December 22, 2016 by Jay

math
arrange smallest to largest 3/4,2/3,5/9,5/6
Thursday, December 22, 2016 by william

math
What is 3 times the quotient of n divided by 5?
Thursday, December 22, 2016 by jalysa

math
if tan(a+b)=2/3 and tan(a-b)=2/5 then find the value of tan2b.
Thursday, December 22, 2016 by Mandeep lamichhane

math
When 100 is added to a number , the result is 50 more than 3 times the number. Find the number
Thursday, December 22, 2016 by SABIR Hussain

math
the measures of a pair of two adjacent sides of a parallelogram are 15cm and 20 cm.if the length of one of its diagonal is 25cm, find the area of the parallelogram
Thursday, December 22, 2016 by nia

Math
Sides of a quadrilateral are all positive integers.How many possible values the fourth side have if three of its sides are 5cm,10cm,20cm?
Thursday, December 22, 2016 by Shashwat

math
There are 70 woman in a club. Each plays at least one of the following games: volleyball, basketball and table tennis. 20 play volleyball only,10 play basketball only and 6 play table tennis only. 4 play all the three games and an equal number play two games only. a) ...
Thursday, December 22, 2016 by Douglas

math
The locus of point whose distance from the point (0,5) is always 3/4 of its distance from line y=8 is an ellipse. Find major and minor axis
Thursday, December 22, 2016 by donald

MATH
A scientist needs 80 liters of a 30​% acid solution. He currently has a 20% solution and a 60% solution. How many liters of each does he need to make the needed 80 liters of 30​% acid​ solution?
Thursday, December 22, 2016 by HELP PLEASE!!!! QUICKLY!!!!

Math
When 100is added to a number the result is 50 more then 3 times the number.find the number
Wednesday, December 21, 2016 by Abhay

math
When 100 is added to a number , the result is 50 more than 3times the number . Find the number. (A) 50 (b) 25 (c) 75 (d) 100
Wednesday, December 21, 2016 by MD shakil

math
Justin has an I-tunes gift card worth $125. after he downloads his first app, the cards value is $118.01. after he downloads his second app, the cards value is $111.02. after he downloads his third app, the i-tunes gift card is worth $104.03. Justin wants to download as many ...
Wednesday, December 21, 2016 by sara

MATH
A line has a slope -4/3 and passes through the point (12,6). Determine three additional points of this line. I don't know how to do find this
Wednesday, December 21, 2016 by NEED HELP PLZ

Math
A line has a slope -4/3 and passes through the point (12,6). Determine three additional points of this line. I'm very confused of this
Wednesday, December 21, 2016 by Anonymous

math
damon borrowed $1000 for 1 year and 7 months at an interest rate 6.3% compounded monthly. how much did he repay
Wednesday, December 21, 2016 by erika

Math
You purchase 3.5 kg of bananas for $2.42. What is the cost of 1 kg of bananas? Answer: $1.45????
Wednesday, December 21, 2016 by Cora

math
The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be polled? c)the ...
Wednesday, December 21, 2016 by Jenna

Math
There are 132 people seated in the school auditorium for an assembly.  There are 6 rows in the auditorium, each with the same number of seats.  If the auditorium is completely filled, how many seats are there in each row?
Wednesday, December 21, 2016 by Andrew

math
Find a polynomial, which, when added to the polynomial 5x2–3x–9, is equivalent to: 0
Wednesday, December 21, 2016 by ali

Math
A wall in Marcus's bedroom is 8 1/3 feet high and 16 1/5 feet long. If he paints 1/3 of the wall blue, how many square feet will be blue?
Wednesday, December 21, 2016 by luis

Math
What does it take to win a tug of war
Wednesday, December 21, 2016 by Danielle

Math
Victoria has a 2-pound package of flour. She uses 2/5 of the flour to make bread. Find the weight of the package of flour that she has left. Express your answer as a decimal.
Wednesday, December 21, 2016 by Elizabeth

Math
You buy clothing at a sale. You buy a sweater (a really nice one!) at seven tenths (7/10) of its original price if $35. Answer the fallowing questions. A: How much money did you spend? B: How much money did you save? C: What fraction of the total original price did you save? ...
Wednesday, December 21, 2016 by Jae

Math
A rectangular sheet measuring 80cm and 50cm is 2mm thick and is made of metal whose density is 2.5g/cm cubed.A square of side 5cm is removed from each corner of the rectangle & the remaining part folded to form an open cuboid. Calculate a)The area of metal that forms the ...
Wednesday, December 21, 2016 by Jada

Math
A pair of pants costs twice as much as a shirt. The total cost of 1 1 pair of pants and 1 1 shirt is $18 $18 . If s represents the cost of 1 1 shirt, which equation could you use to find the cost of 1 1 shirt?
Wednesday, December 21, 2016 by Fred

math
24. Four friends attempted to write the explicit expression for the nth term of the sequence 2, 5, 10, 17, …. 24. Four friends attempted to write the explicit expression for the nth term of the sequence 2, 5, 10, 17, …. If n represents the set of counting numbers, who ...
Wednesday, December 21, 2016 by emily

math connections
1. x/4+1=-5 A)-2 B)16 C)4 D)-24 ****?? 2. 6x+29=5 A)-4****** B)-18 C)204 D)-144 3. combine like terms -21a+16a -5a**** 5a 37a -37a 9a-b-2a-10b simplify -7a + 11b 11a + 9b -11a-9b 7a-11b ????? solve -4n + 7 + 2n=1 1 3 -3 4 solve 4(y-4)=8
Wednesday, December 21, 2016 by dude

Math
x^2sinx/1+tan
Wednesday, December 21, 2016 by Xfgy

math college readiness
Find the midpoint of the segment below and enter its coordinates as an ordered pair. If necessary, express coordinates as fractions, using the slash mark ( / ) for the fraction bar.
Wednesday, December 21, 2016 by kiandra

math
which point lies on the line defined by 3x + 8y = 5
Wednesday, December 21, 2016 by lele

math
in math class ,the ratio of boys to girls are 4:8 ,if they are 24 girls in the class,how many boys are there
Wednesday, December 21, 2016 by janine

math
It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find probability that: a)at least 90 people are colour blind b)exactly 50 people are colour blind I already posted this question and my solution. ...
Wednesday, December 21, 2016 by Jenna

math connections
1. x/4+1=-5 A)-2 B)16 C)4 D)-24 ****?? 2. 6x+29=5 A)-4****** B)-18 C)204 D)-144 3. combine like terms -21a+16a -5a**** 5a 37a -37a 9a-b-2a-10b simplify -7a + 11b 11a + 9b -11a-9b 7a-11b ????? solve -4n + 7 + 2n=1 1 3 -3 4 solve 4(y-4)=8
Wednesday, December 21, 2016 by dude

math
a ģùn is fired at a distance of 24•3 away from a man • he hears the sòùñd after 27 second find the speed of soùnd at which it travels
Wednesday, December 21, 2016 by Anonymous

math
Insert some parentheses in the expression 24 : 4 + 8 : 2 +2 so that the result is: a) 3 b) 4 c) 5 d) 6
Wednesday, December 21, 2016 by karem

Math
Find the difference between the simple interest and compound interest on 16000 for 3/2 years at 5 %per annum, compound interest being reckoned half yearly.
Wednesday, December 21, 2016 by VISHAL

math
1/4 of 36 oranges are bad.find the number of bad oranges please I need the answer in just one minute
Wednesday, December 21, 2016 by kamil

math
draw a line segment A B =6 cm and on it mark point C D E such that A C = C D D E = E B. draw a prependiculars to A B at C D E on the same side of A B.
Wednesday, December 21, 2016 by kashif

math
In the spring, a group of biologists caught and tagged 500 wolves in a wilderness area. These animals were then released. A couple of months later, 200 wolves were caught and 75 of them had tags. Estimate the wolf population in this wilderness area. Please check if my solution...
Wednesday, December 21, 2016 by Jenna

Math
If one of the angles of a triangle is 110 degree then the angle between the bisector of the other two angles is what ?
Wednesday, December 21, 2016 by Pranav

math
5times 10 + 18-1 divied by 100
Wednesday, December 21, 2016 by kaytlin

Math
(-5x)*(-6) simplify
Wednesday, December 21, 2016 by Miracle

Math - Trig / Pre - Calc
Standard form of hyperbola: Hyperbola: Vertices: (9,9), (9, -7) Foci: (9, 1 + 4 sqrt 13), (9, 1 - 4 sqrt 13)? Standard form Ellipse: vertices: (2 sqrt 10, -10), (-2 sqrt 10, -10) foci: (sqrt 30, -10), (-sqrt 30, -10)?
Wednesday, December 21, 2016 by Lilly

math
A bakery sells 5800 muffins in 2010. The bakery sells 7420 muffins in 2015. Write a linear model that represents the number y y of muffins that the bakery sells x x years after 2010
Wednesday, December 21, 2016 by jake

help with math plz
x= -2, -1,0,1,2 y= 9, 4, -1, -6, -11 I know how I did it but I need like a more explaining thank you
Wednesday, December 21, 2016 by Wolf

Math
1. 2(x-3)=2x A. One solution B. No solutions C. Infinitely many solutions 2. 3(y-3)=2y-9+y A. One solution B. No solutions C. Infinitely many solutions 3. 10x-2-6x=3x-2+x A. One solution B. No solutions C. Infinitely many solutions 4. 4(x+3)+2x=x-8 A. One solution B. No ...
Wednesday, December 21, 2016 by Ellie

HELP ME PLZ MATH
write a rule for the function represented by the table. input (x) 0 1 2 3 4 output (y) 3 6 9 12 15 A y=3x B y=3x+3**** C y=5x+1 D y=x+5 my answer was b am I right
Tuesday, December 20, 2016 by Wolf

Math
Identify the vertex y=|x-2|+1 y=-|x+5|+4 My answers 1.(2,1) 2.(5,4)
Tuesday, December 20, 2016 by Aria

Math
What does it take to win a tug of war
Tuesday, December 20, 2016 by Danielle

Math
The total number of football (x) and basketball (y) is 180. There are 30 more football than basketball. How many of each basketball and football are there?
Tuesday, December 20, 2016 by Mary

math
If f(x) = 3x and g(x) = 3x + 1 + 6. Describe the transformations from f(x) to g(x). A) left 1 and up 6 B) left 6 and up 1 C) right 6 and up 1 D) right 1 and down 6
Tuesday, December 20, 2016 by Jay

Math
Write an equation that is parallel to the line y=-2x+4
Tuesday, December 20, 2016 by Aria

Math
In an isosceles triangle the verticle angle is 40° find the other two angle of the Triangle
Tuesday, December 20, 2016 by AdityA

Math general
If you have to cut 102 ft of rope into 18 inches, how many pieces would you have?
Tuesday, December 20, 2016 by Nicole

math
Devide 1000 by two parts such that one part is 1/100 of other
Tuesday, December 20, 2016 by kalyani

Math
carmela cut a cake into 12 equal-sized pieces. She ate 2/12 of the cake and her brother ate 3/12 of the cake.What fraction of the cake
Tuesday, December 20, 2016 by Veronica

math
how many 0z of a metal containing 90% copper must be combined with 3 0z of purecopper to form an alloy containing 92% copper?
Tuesday, December 20, 2016 by Lakshmi

math
how much silt do you need to add to 4ft cube of soil with 10% silt in order to make a soil with 60% silt?
Tuesday, December 20, 2016 by Lakshmi

Math
Max received an allowance of $20.she spent $12 and saved the rest. What percent of her allowance did she save?
Tuesday, December 20, 2016 by Ping

math
The area of the bottom of a rectangular box is 316cm squared the area of one side is 168cm squared and the area of the other is 120cm squared. What are the dimensions of the box?
Tuesday, December 20, 2016 by jake really needs help

Math
A waitress Nikia makes three dollars per hour +8 dollars in tips she goes to earn no less than $26 today what is the algebra equation for that
Tuesday, December 20, 2016 by Melanie

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