Thursday
November 26, 2015

# Homework Help: Math

## Recent Math Questions

Math
I cannot figure out the missing value. 7^ 8 6 13=84
Wednesday, October 28, 2015 by Corey

Math
The cost of a set of 4 tires is $192.00. What is the unit rate for the cost of 1 tire. Wednesday, October 28, 2015 by Amy math Rachel deposited$6,004 in a savings account with simple interest. Three months later, she had earned $210.14 in interest. What was the interest rate? Wednesday, October 28, 2015 by Jessica MATH help What is the value of x? 8x-9=3x+16 x= Wednesday, October 28, 2015 by flaca math help azap What is the value of x? 6x-2(x+4)=12 x= Wednesday, October 28, 2015 by flaca math What is the value of x? -5x=-35 x= Wednesday, October 28, 2015 by flaca math determine which two values the following expression is between? A.10.24 and 10.89 B.9.61 and 10.24 C.9 and 9.61 D.10.89 and 11.56 plz i really need someones help!! Wednesday, October 28, 2015 by ter math which number will have the same result, when rounded to the nearest ten or hundred? 97 118 and 5 179 5,091 Wednesday, October 28, 2015 by Elsa Math 6-7 What is the definition of prime factorization? Wednesday, October 28, 2015 by Versace math if one car drives at 83 mph and the other drives at 83 mph how long until their 83 miles apart. i did 83x + 48x = 83 131x = 83/131 divided by 1 x = 83/131 multiply by 60/1 = 131 multiplied by 60 = 2.2 i got 2.2 hours Wednesday, October 28, 2015 by lexus Math Can Someone explain me about this question Danika has a board that is 4 yards long. How much needs to be sawn off to make the board 2 feet 8 inches long? A) 1ft 4in B)9ft 4in C)8ft 6in D)2ft 6in Wednesday, October 28, 2015 by Bob Math -12, 60, -300, 1500 what are the next two numbers in the pattern? Wednesday, October 28, 2015 by Loretta Math Find the value of cos2x. cosx = -2/3 pi/2 < x < pi Is this -1/9? Wednesday, October 28, 2015 by Anonymous Math How do I get (sinx cosy + cosx siny) (cosx cosy + sinx siny) in the form of 1/2(sin2x + sin2y)? Wednesday, October 28, 2015 by Anonymous Math Are my statements correct? U={1,2,3,4,5,6,7,8}, A={1,3,5,7}, and B={4,5,6} My statements: A⊆B B⊆U Wednesday, October 28, 2015 by Kaai97 math if a brush can be 1/8 inch longer than 5 1/4 inch .what is the maximum length if can be? Wednesday, October 28, 2015 by le Math Write the solution to the inequality in set-builder notation. 9t-4>32 a. {t|t>4} b. {t|t>6} c. {t|t>28} d. {t|t>36} Wednesday, October 28, 2015 by Kaai97 Math Find the equation of the line of intersection of the two plane given by x+y+z=5 and 4x+y+2z=15 Pls help me to solve this.. After i use cross product i got (1,2,-3)..Then what should i do? Wednesday, October 28, 2015 by Yong math what is 10 5/18 - 8 5/6 A. 2 5/9 B. 2 13/18 C.1 4/9 d. 1 11/18 I think It is B? Wednesday, October 28, 2015 by john MATH help What is the value of x? x/4-5=6 x= Wednesday, October 28, 2015 by flaca math please help What is the value of x? -5x=-35 x= Wednesday, October 28, 2015 by flaca math What is the value of x? 12-x=7 x= Wednesday, October 28, 2015 by flaca math help azap What is the value of x? x+15=8 x= Wednesday, October 28, 2015 by flaca Math two boats leave the same port at the same time. one travels at a speed of 29 mph in the direction N 50 degrees E and the other travels at a speed of 35 mph in the direction S 70 degrees E. how far apart are the two boats after an hour. Wednesday, October 28, 2015 by Claire Math Find the equation of the line of intersection of the two plane given by x+y+z=5 and 4x+y+2z=15 Wednesday, October 28, 2015 by Yong Math HELP! what is 9,348+102+5,802+1,933= Wednesday, October 28, 2015 by Kailyn math use a trial and error strategy to solve this problem.two years ago sam was two-thirds of pam's age. in three years sam will be three-fourths of pam's age. in 20 years the sum of their ages will be 69. how old is sam? Wednesday, October 28, 2015 by kasia math Dracula, Frankenstein, Mummy, Gilda and Zelda are all having a Halloween party. Each of them has given an invitation to all of the others. How many invitations have been given out? Wednesday, October 28, 2015 by Sally MATH Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is$2 and the profit on every wrap is $3. Sal made a profit of$1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last ...
Wednesday, October 28, 2015 by Lucy

math
Mary purchased 4 blouses, 2 jackets, and 3 skirts. How many different outfits using a blouse, a jacket, and a skirt are possible?
Wednesday, October 28, 2015 by Anonymous

math
Each child has 3 pencils if there are 225 children how many pencils are there in total
Wednesday, October 28, 2015 by pragathi

Math
Two individuals, A and B, are finalist for a chess championship. They will play a sequence of games, each of which can result in a win for A, a win for B, or a draw. Outcomes of successive games are independent with P(A wins) =.3, P(B wins)= .2, P(draw)=.5. Each time a player ...
Wednesday, October 28, 2015 by Brandy

Math
First vehicle is traveling at 50 miles per hour. Second car is traveling at 65. They ate 15 feet apart when the second cars slammes on break. Will they have a empack and at what speed.
Wednesday, October 28, 2015 by Julia

Math
Are these the solutions to sin2x sinx = cosx? pi/2, 3pi/2, 3pi/4, pi/4, 7pi/4, 5pi/4
Wednesday, October 28, 2015 by Anonymous

Math
At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 21 knots. How fast (in knots) is the distance between the ships changing at 5 PM?
Wednesday, October 28, 2015 by victoria

Simplify each expression. Your answer should still be in exponential form. Make sure that you combine all numbers with the same base. y^a/y^b
Wednesday, October 28, 2015 by Claire

math
Simplify each expression. Your answer should still be in exponential form. Make sure that you combine all numbers with the same base. y^a/y^b
Wednesday, October 28, 2015 by Claire

math
Simplify each expression. Your answer should still be in exponential form. Make sure that you combine all numbers with the same base. \frac{r^{5}s^{3}}{rs^{2}}
Wednesday, October 28, 2015 by Claire

MATH PRE ALGEBRA
Estimate 14.16÷6.82
Wednesday, October 28, 2015 by Sherwanda

math
Of the 34 students in a class, there are 2 fewer students with blue eyes than there are students with hazel eyes. Also, there are twice as many students with brown eyes than there are students with blue eyes. Which of these is either the number of students with blue eyes, the ...
Wednesday, October 28, 2015 by jim

Math
Which of the following is equal to the expression below?
Wednesday, October 28, 2015 by Joshua

Math
In a high school reunion, the organizers decided to sell 1500 raffle tickets at 1000 each for the four prizes of 250,000 125,000 75,000 50,000 What is the expected value of one ticket? I got -670, is this correct? Thanks!
Wednesday, October 28, 2015 by Jen

math
Ken borrowed $76.14 from his brother. Last month he paid him one-third of what he owes. Ken told him that next week he'll be able to pay 50% of what is still owed. After that payment, how much will Ken still owe his brother? plz!! i really need help Wednesday, October 28, 2015 by ter math y= 3x+ 9 Wednesday, October 28, 2015 by chris Math Mark needs to cut a piece of glass to replace a broken window. He has four pieces of glass: 6 feet long, 5 feet long, 3 feet long, and 7 feet long. If the length of the glass he needs to cut is feet long, which piece of glass should he cut to have the least amount of unused ... Wednesday, October 28, 2015 by MsHemmoPenguin MAth 1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 <-- 2.n-8>5 n>-13 n>1 <-n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 <-- 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of... Wednesday, October 28, 2015 by DEEZ GOT HEE maTH 1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of adults. The bus ... Wednesday, October 28, 2015 by AABBCC math 1( which number is the solution for m + 90 = 150 A( 50 B( 60 C( 140 D( 240 2(which number is the solution of n/3 = -12 A( -36 B( -4 C( 4 D( 36 3( use mental math to find the solution of 19b = 190 A(10 B(11 C(171 D(280 4(estimate the solution of y + 1.8 = 3.14 to the nearest ... Wednesday, October 28, 2015 by cross fire Math If you are 15 how old will you be when you get out of high school? Wednesday, October 28, 2015 by Aaliyah math Don bought a long sleeve shirt for 24.80. If the sale was 20% off, how much was the shirt originally? A)32.00 B)49.60 C)31.00 D)34.50 my answer is 31.00 Wednesday, October 28, 2015 by Anonymous math Don bought a long sleeve shirt for 24.80. If the sale was 20% off, how much was the shirt originally? A) 32.00 B) 49.60 C) 31.00 D) 34.50 Wednesday, October 28, 2015 by Anonymous math logarithm 16.32*0.00635/0.0482 Wednesday, October 28, 2015 by logarithm math a rectangular tank,50cm long and 30cm wide,contains water upto a height of 9 cm.a box of dimensions 25cm,25cm,20cm is not placed in the tank so that its square faces rest on the bottom of the tank. the quantity of the water that must be poured into the tank in order to just ... Wednesday, October 28, 2015 by madhulika math 5 part question. 1st part is Mr. Black has 3 baskets of apples in his store. in each basket are 9 red, 6 granny, 5 empire, 3 Fuji and 1 honeycrisp. What is the total number of each kind in the basket. We have 72 as the answer. Wednesday, October 28, 2015 by Tracy Math Just learned log rules and I don't get it. How do you solve log5x^2 + 4log5x = 12 ? Thanks in advance. Wednesday, October 28, 2015 by Ken Math Graph of f(x)=log_2(x) has been transformed to g(x)=alog_2(x)+k. The transformed image passes through the points (1/4,-9) and (16,-6). Determine a and k. No idea. Thanks! Wednesday, October 28, 2015 by Bethany MatH 1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of adults. The bus ... Tuesday, October 27, 2015 by AABBCC Math Golds gym charges$150 to sign up and $10 per month. Fitness express charges not initial fee but charges$25 per month. When will the cost be the same? Show work please!!
Tuesday, October 27, 2015 by Michelle

Math
Trina works after school and on weekends. She always works three days each week. This week she worked 2 3/4 hrs on Monday. 3 3/5 hrs on Friday and 5 1/2 hrs on Saturday. Next week she plans to work the same number of hrs as this week but will work the same number of hrs each ...
Tuesday, October 27, 2015 by Crystal

Math
Riley and Justin shared a cash prize in the ratio 2:5. Justin received $27 more than Riley. How much money did riley get? Tuesday, October 27, 2015 by Jake Math How many 1 inch squares can be cut from an 18"x24" piece of contruction paper Tuesday, October 27, 2015 by Alyssa math Solve for x: 3x − 5 = 2x + 6. Tuesday, October 27, 2015 by bb math an airplane is flying at 350 km/h. after one hour, she notices that owing to strong winds, she is 48 km west of her intended flight path. at what angle to her intended flight path has she been flying Tuesday, October 27, 2015 by bob larry math the square root of 23 over 3 is equal to a) square root of 3 b)3 c)9 d)12 I found no one poof these answers to be true. Tuesday, October 27, 2015 by josh Math Draw a picture that shows an example of a product of two even numbers. Write the marching multiplication sentence. Tuesday, October 27, 2015 by AlIna Math Jenna says that no row or column contains products with only odd numbers. Do you agree? Explain. Tuesday, October 27, 2015 by AlIna Math 1. The graph of y=2logbase5X-7 is reflected in the x-axis and translated 6 units up. I got y=-2logbase5X-1 as a result. The answer key says y=-2logbase5+13. How???? Tuesday, October 27, 2015 by Bethany math 1/3 of lunch money was spent on a sandwich, 1/2 spent on water, 1/8 spent on chips. what fraction of money is left Tuesday, October 27, 2015 by Tonya math Joyce is buying a pair of jeans for$39.99. The jeans are on sale at a 20% discount and the sales tax is 7%. Write a function T(x) to represent the total cost of an item with 7% sales tax. Find the composite function (T of S)(x).Use the composition to find the final cost of ...
Tuesday, October 27, 2015 by cierra

Math
How do I find the solutions for cos2x - cos6x = 0?
Tuesday, October 27, 2015 by Anonymous

math
Explain how you know if a number can be divided by 10 evenly
Tuesday, October 27, 2015 by Angelica

math (algebra)
A construction crew built 6 miles of road in 2/7 days. what is the unit rate in the miles per day?
Tuesday, October 27, 2015 by Anonymous

Math
If the value of a car decreased by 10 percent and is now worth $21,000. What was the original cost of the car? Tuesday, October 27, 2015 by Joseph math Dina has 22 dimes in his piggy bank. He has 5 times as many pennies. How much money does Jim have all together? A) 3.30 B)1.22 C)3.50 D) 1.10 Tuesday, October 27, 2015 by Anonymous math Two runners are competing in a race. One runner averages a pace of 7 minutes per mile and finishes the race in 28 minutes. The second runner finishes the race in 30 minutes. Which of the following is the pace of the second runner? A. 7 minutes, 15 seconds per mile B. 7 minutes... Tuesday, October 27, 2015 by alixie Math If a car decreased by 10 percent and is now worth$14,000. What was the original price of the car
Tuesday, October 27, 2015 by Joseph

Math
The area of a rectangle mirror is 11 11/16 feet. The width is 2 3/4 feet. If there is a 5 foot tall space on the wall to hang the mirror will it fit explain.
Tuesday, October 27, 2015 by Kylen

math
Danika has yellow 10 buttons.She has 6 times as many black buttons. How many buttons does she have?
Tuesday, October 27, 2015 by jason

Mr. Thomas travel 20miles each week to and from work. If he works 5 days a week, how many miles does Mr. Thomas travel each day to go to work? Does this mean 20miles total for the week or that it should be 40miles total(20 miles to + 20 miles from)? 20miles/5days = 4 miles/day...
Tuesday, October 27, 2015 by Jared

math
Lisa Has 5 blue buttons. She has a 3 times as many red buttons. How many buttons does she have? A) 15 B) 20 C) 25 D) 30
Tuesday, October 27, 2015 by toting

math
larry has a board that is 4 yards long. How much needs to be sawn off to make the board 2 feet 8 inches long? A) 1 ft 4 in B)8 ft 6 in C) 2 ft 6 in D/9ft 4 in
Tuesday, October 27, 2015 by jason

math
break apart the addends to find the a sum 18+26=
Tuesday, October 27, 2015 by kate

math
John can drive 50 miles on two gallons of gasoline. How many gallons will he need to go 298 miles? A) 12.10 B)5.96 C) 8.90 D) 11.92
Tuesday, October 27, 2015 by Dondi

math
5 inches is what fraction of a foot? A. 1/3 B. 1/2 C. 5/12 D.5/24 my answer is C. is it correct?
Tuesday, October 27, 2015 by dave

math
1.352 pounds is what fraction of a short ton? A. 169/250 B.77/100 C. 2/4 D. 140/223
Tuesday, October 27, 2015 by joan

math
How are the real solutions of a quadratic equation related to the graph of the quadratic function?
Tuesday, October 27, 2015 by cj

math
Lucas' last 4 test scores were 88, 95, 92 and 81. 90% or better is an A. What would he have to get on his fifth math test to pull up his grade to a 90?
Tuesday, October 27, 2015 by tina

11 Grade College Prep Math-Based Physics
Not good at physics, so could someone check these practice test questions please? Explanations are appreciated. 1. Which of Newton's Laws says you cannot touch anything without being touched? a) 4th b) 2nd c) 1st d) 3rd *** 2. A 3.00 kg ball is dropped from rest from the ...
Tuesday, October 27, 2015 by Ana

Math
write in expression that represents four less than half a number, n
Tuesday, October 27, 2015 by Hasan

Math
What is the average of 12,43,37 and 40
Tuesday, October 27, 2015 by Maisha

Math
Use the product-to-sum formulas to write the product as a sum or difference. sin(x+y) * cos(x-y)
Tuesday, October 27, 2015 by Anonymous

math
the cost in dollars of a school banquet is 74+12n where n is the number of people attending what is the cost for 52 people ? a.$550 b.$698 c.$624 d.$138
Tuesday, October 27, 2015 by mouse

math
evaluate the expression 3(y+1)for y=2 a.6 b.9 c.7 d.8
Tuesday, October 27, 2015 by mouse

Could someone check these practice test questions over for me? I'm not good at physics at all, so I would love an explanation. 1. A projectile is shot an angle into the air. Neglecting air resistance... 1a. It's horizontal acceleration is a) 9.8 m/s^2 b) 0.0 m/s^2 *** ...
Tuesday, October 27, 2015 by Ana

Math
karen collects 6/7 quart of rainwater. she uses 1/2 of the water to clean her bicycle and uses the remaining water equally for 3 houseplants. What volume of water does she use for each houseplant?
Tuesday, October 27, 2015 by Debbie

Math
Pencils are sold in packages of 5.explain why you need 6 packages in order to have enough for 27 students.
Tuesday, October 27, 2015 by Anonymous

math
find a 3 digit number less than 500 in which the 3 different digits are add up to 8.
Tuesday, October 27, 2015 by maida

math
I'm so lost I have no idea. Please help Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. graph of line going through ordered pairs (0, 300) and (450, 0)
Tuesday, October 27, 2015 by Lucy

Math 3
what is the local max and local min of y= 1/21(x-3)(x-3)(x+7)
Tuesday, October 27, 2015 by Nagwa

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