Thursday

October 30, 2014

October 30, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

1. 3w - 10w A, 13w B. -7w** C. -7 D. 7w 2. y + 2y + 3z A. 2y + 3z B. 3y + 3z C. 2y^2+3z D 6yz 3. 6r + r - 5r A. 2r B.1r + r C. 0r D. 7r - 5r 4. 5x + 2(x + 6) A. 7x + 6 B. 7x^2 + 12 C. 7x + 12 D. 7x (x + 6) 5. -3m + 3(m +6) A. 6 B.-6m + 6 C. 6m + 18 D. 18 Help please
*Thursday, September 25, 2014 at 6:45pm*

**math...**

Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of television Julia can still watch this week. I did. 5÷1.5=3.33 T=time T<3.33 Julia can watch 3 ...
*Thursday, September 25, 2014 at 6:29pm*

**math**

Farmer john has hens, geese, ducks, and two goats the number of hens equals the number if geese and ducks combined . There are 5 fewer geese than ducks. If the total number of animals is 40 how many are ducks
*Thursday, September 25, 2014 at 6:22pm*

**Math-please check**

Determine if a true bioconditional can be written from each conditional statement. If not, gove a counterexample. 1. If a = b then |a| = |b| Is this true? 2. If y^2= 64 then 3y=24 Is this false? Because if you do -8 both of them aren't equal
*Thursday, September 25, 2014 at 6:13pm*

**Math-please check**

The supershots scored over 75 points in each of ten straight games. The newspaper predicts that they will score more than 75 points tonight. Which form of reasoning is this conclusion based on? A. Deductive reasoning, because the conclusion is based on logic B. Deductive ...
*Thursday, September 25, 2014 at 6:06pm*

**math...**

Solve b-9>20 I did 29-9>20 But I'm not sure that's right.
*Thursday, September 25, 2014 at 6:02pm*

**math**

Is 3/7 greater or less than 15/56
*Thursday, September 25, 2014 at 5:54pm*

**math...**

Graph.. <-3,-2,-1,0,1,2,3,4> the circle is on 2 and is an open circle. Which inequality matches the graph? A. 6w+6>18??? B. 6w+6>=18 C. 6w-6>18 D. -6w+6>14 The answer is A right?
*Thursday, September 25, 2014 at 5:50pm*

**Math! URGENT**

Describe the number of solutions for the equation. -2(x-1)=2x-2 A. Infinite solutions B. One solution C. No solution Is the answer B?
*Thursday, September 25, 2014 at 5:22pm*

**Math! URGENT**

Describe the number of solutions for the equation. 5(x-9)=5x A. No solution B. One solution C. Infinite solutions Is the answer B? Thank You for any help.
*Thursday, September 25, 2014 at 5:18pm*

**Math Help. **

Which inequality matches the graph. <-4,-3,-2,-1,0,1,2,3,4> The dot is on the 1 and is a filled in circle with the arrow going to -4. A. 3x+1>4 B. 3x+1>/4 C. 3x+1<4 D. 3x+1</4 Is the answer C?
*Thursday, September 25, 2014 at 4:43pm*

**Math! URGENT**

Solve the inequality -5p>-30 A. p>6 B. p<6 C. p>-35 D. p<35 Is the answer B?
*Thursday, September 25, 2014 at 4:37pm*

**Math**

For the given point and line, find by projection the point on the line that is closest to the given point and use perp to find the distance from the point to the line. P (3,-5) line: x = (2,-4)+t(3,-4)
*Thursday, September 25, 2014 at 4:32pm*

**Math! URGENT**

-9-6(w+5) Simplify this expression A. -15w+5 B. -15w+30 C. -6w-39 D. -6w+21 Is the answer C?
*Thursday, September 25, 2014 at 4:27pm*

**math**

Hawaii's lowest temperature on record is -11degrees Celsius. What would you expect to be true about the elevation of the site where this temperature was measured.
*Thursday, September 25, 2014 at 4:08pm*

**Please math help**

A: I am choosing an integer. I then subtract 10 from the integer, take the opposite of the result, add -3, and find the opposite of the new result. My result is -3. What is the original number? B: Judy wants to do the activity in part (a) with her classmates. Each classmate ...
*Thursday, September 25, 2014 at 4:04pm*

**Math--3 questions. Plz help.**

3. Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) + (–5...
*Thursday, September 25, 2014 at 3:04pm*

**Math**

While hiking, Kristen went up 300 feet. If Kristen started at 100 feet above sea level, what is her elevation now? I need help with this question?
*Thursday, September 25, 2014 at 2:27pm*

**Math**

Why would you use square roots in the following question: Chang is participating in a charity bicycle road race. The route starts at Centreville and travels east for 13 km to Eastdale. He then makes a 135° turn and heads northwest for another 18 km, arriving at Northcote. ...
*Thursday, September 25, 2014 at 2:26pm*

**Math**

State the side length of a square with an area of 27 cm2 in simplified radical form.
*Thursday, September 25, 2014 at 1:44pm*

**Math**

What is ^4 square root 1280r^8 t^12 in simplified form?
*Thursday, September 25, 2014 at 1:30pm*

**Math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
*Thursday, September 25, 2014 at 1:29pm*

**Math conversion **

21.0cm^3=___in^3
*Thursday, September 25, 2014 at 12:32pm*

**MATH**

1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE -|16| ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,|-4|,-7,0,-|3|,3 B. -|3|,-7,0,3,7,|-4| C. -7,-|3|,0,3,|-4|,7 D. 7,|-4|,3,0,-|3|,-7 3. WHICH SYMBOL WILL MAKE |-6| ? -6 TRUE? A. >...
*Thursday, September 25, 2014 at 12:11pm*

**Math**

Mrs. Warren is making a snack for her class. The recipe calls for chocolate chips and peanuts in a ratio of 4:2. If Mrs. Warren needs 15 cups of the snack, how many cups of the chocolate chips does she need?
*Thursday, September 25, 2014 at 11:25am*

**math**

75ft^2= ___m^2
*Thursday, September 25, 2014 at 11:12am*

**MATH**

How do i find the center of a circle using 3 points. Also need to find the radius and the equation of the circle.... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And...
*Thursday, September 25, 2014 at 11:07am*

**MATH **

1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE -|16| ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,|-4|,-7,0,-|3|,3 B. -|3|,-7,0,3,7,|-4| C. -7,-|3|,0,3,|-4|,7 D. 7,|-4|,3,0,-|3|,-7 3. WHICH SYMBOL WILL MAKE |-6| ? -6 TRUE? A. >...
*Thursday, September 25, 2014 at 10:57am*

**Math**

0.34divided by 100
*Thursday, September 25, 2014 at 10:23am*

**math**

23456782313%98
*Thursday, September 25, 2014 at 6:58am*

**Math (Quadractic function)**

Hi can you help me find the solution for this one? I have the answers at the end but I want to study how did it end with that. Thanks :) The number N of bacteria in a refrigerated food is given by N(T) = 10T^2 - 20T + 600, 1 ≤ T ≤ 20 where T is the temperature of ...
*Thursday, September 25, 2014 at 6:48am*

**math**

Evaluate the following expression using BODMAS rule (90/3*3+5)/(-2*3+9)
*Thursday, September 25, 2014 at 4:32am*

**Please Help! Math**

How to find the center and radius of a circle using 3 points... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the perpendicular bisector of the ...
*Thursday, September 25, 2014 at 1:52am*

**math**

A boy of height 95 cm is walking away from base of a lamp post at a speed of 1.5 m/s.If the lamp post is 3.8 m above the ground, find the length of his shadow after 5 seconds.
*Thursday, September 25, 2014 at 12:29am*

**Math questions?**

Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) + (–5...
*Thursday, September 25, 2014 at 12:07am*

**Oliver Springs**

Please help,Math,Problem;John and George together raked 7/8 of the yard. John raked 3/4 of that amount. What part of the yard did John rake?
*Wednesday, September 24, 2014 at 11:36pm*

**Math**

which two square roots are used to estimate 47? I think its the square root of 49 and 36.
*Wednesday, September 24, 2014 at 11:25pm*

**Math**

A souvenir consisting of a cube with an inserted sphere is made to represent Earth. Both pieces are made out of solid crystal. The sphere replaces one quarter of the volume of the cube. Calculate the volume of the souvenir piece. The sphere has diameter of 4 cm and the cube ...
*Wednesday, September 24, 2014 at 11:13pm*

**Math**

I have to make a real world problem using the greatest common factor of two numbers help me please.
*Wednesday, September 24, 2014 at 10:59pm*

**Math question? Only 1.**

Use the order of operations to simplify the expression. –18 + (–4) + 20 + (–3) I know the answer is -5. Care to show me how to do it step by step, please?
*Wednesday, September 24, 2014 at 10:46pm*

**Math-2 questions**

Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) + (–5...
*Wednesday, September 24, 2014 at 10:42pm*

**Math**

Convert 62 inches to yards, feet, inches? How do I do all three at once? Please help.
*Wednesday, September 24, 2014 at 10:37pm*

**sixth grade math**

3 3/5 * 5/6 = 90/45 Do I have correct answer?
*Wednesday, September 24, 2014 at 10:29pm*

**math**

a rectangular pen is divided into 6 rectangular strips by fences running parallel to the width of the pen. if 420m of fencing are available, determine the dimensions that give the maximum area possible.
*Wednesday, September 24, 2014 at 10:10pm*

**Math**

Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?
*Wednesday, September 24, 2014 at 9:52pm*

**math**

How do you study for a math quiz?
*Wednesday, September 24, 2014 at 9:50pm*

**math**

A class is. Planning. A. Party. A pizza restaurant cuts. Each. Pizza. Into 8. Slices there are 32 students how many. Pizzas. Does the. Class. Need to. Order. For each. Student to have a slice explain please
*Wednesday, September 24, 2014 at 9:46pm*

**math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7.
*Wednesday, September 24, 2014 at 9:41pm*

**Math please check my answers**

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and aren't ...
*Wednesday, September 24, 2014 at 9:38pm*

**math**

Jason took 3/4 of an hour to paint 27 1/3 square yards. How many square yards does he paint per hour?
*Wednesday, September 24, 2014 at 9:37pm*

**math**

using comparative thinking which equations are true a.50+64=62+48 b.50+64=62+62 c.50+64=124+52 d.50+64=66+52
*Wednesday, September 24, 2014 at 9:36pm*

**math**

if angle A contains 1/2x and angle B contains 1/2(180-x) are the angles A and B supplementary, complementary, or neither
*Wednesday, September 24, 2014 at 9:34pm*

**Math**

Kendra wants to purchase a bead necklace made of Jade. The cost depends on the amount of Jade in the necklace. Each bead is 7 mm in diameter and there are 100 beads in the necklace. What is the amount of Jade in the necklace in cubic centimeters? Please can you help me with ...
*Wednesday, September 24, 2014 at 9:26pm*

**math**

When a 3 people goes to a hotel, it is $30. Later on, the owner had a promotion of $25, and told them to give $5 to the service worker but he took $2 so they can keep $3. Therefore, each person will have back $1. Each person will have to pay $27. Now after you solve it, a ...
*Wednesday, September 24, 2014 at 9:15pm*

**Math**

At one store a trophy costs 12.50 dollars and engraving cost 0.40 cents. At another store the same trophy costs 14.75 dollar and engraving costs 0.25 cents. How many letters, e must be engraved for the costs to be the same? 15 letters What will the cost of e, letters? 18.5
*Wednesday, September 24, 2014 at 9:11pm*

**math**

The base of a triangular prism is a right triangle whose legs are 7cm and 24 cm. The height of the prism is 30cm. What is lateral area of prism?
*Wednesday, September 24, 2014 at 9:05pm*

**math**

A cube with an edge length of 4 in is painted on all its sides. Then the cube is cut into 64 cubes with an edge length of 1 in. What percent of the total surface area is painted?
*Wednesday, September 24, 2014 at 9:03pm*

**Math**

A full 355 mL can of Coke is leaking at a rate of 5mL per minute into an empty can. How long will it take for the two cans to have the same amount m of Coke? Is the equation 335+5m= something? I'm not sure
*Wednesday, September 24, 2014 at 9:01pm*

**math**

A glass prism on a chandelier is 75mm long. A base of the prism is an equilateral triangle with side lengths of 9mm and a height of about 7.8 mm. What is approximate surface area of prism?
*Wednesday, September 24, 2014 at 9:00pm*

**Math**

Patty wants to use at most 6 gallons of paint to cover her house and garage. The house takes 5 times as much paint as the garage. Which inequalit best represents the situation if g represents the amount of paint that can be used on the garage A. g+5g ≤ 6 B. 5g ≥ 6 ...
*Wednesday, September 24, 2014 at 8:57pm*

**Math- check my answers**

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and aren't ...
*Wednesday, September 24, 2014 at 8:50pm*

**math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
*Wednesday, September 24, 2014 at 8:46pm*

**Math**

jason mixed 3/8 cup of sugar with 1 5/6 cups of water. how many more cups of water than sugar did he use in his mixture?
*Wednesday, September 24, 2014 at 8:43pm*

**math**

if angle A contains 1/2x and angle B contains 1/2(180-x) are the angles A and B supplementary, complementary, or neither
*Wednesday, September 24, 2014 at 8:37pm*

**Math**

My answers will be posted 2! 1. Dimensions of the cube is 5x3x1 a. What is the surface area? ( i said 46ft squared ) b. What is the # of cubes? ( I said 15 ) 2. Dimensions are 5x3x2 a. Surface area? ( 62ft squared ) b. # of cubes? ( 30 ) 3. Dimensions are 5x3x5 a. Surface area...
*Wednesday, September 24, 2014 at 8:35pm*

**MATH**

Estimate the indicated derivative by any method y=1-x^2 ; estimate dy/dx , x=-1 I know I would use the f(x)= f(x+H)-(x)/h I am a bit overwhelmed with what to do next. Thanks John
*Wednesday, September 24, 2014 at 8:35pm*

**Math**

For how many values of n where n is a positive integer less than 10 is n+1/2 an integer? A) None B) One C) Three D) Four E) Five Please I would like some help explaining how to get the answer :)
*Wednesday, September 24, 2014 at 8:32pm*

**Math**

Write a real world description to fit the expression -50 divided by 5.
*Wednesday, September 24, 2014 at 8:26pm*

**math**

A rectangular prism has a length of 8 in and a width of 7 in. The lateral area is 150 square in. What is height of prism? Have no idea how to do this....please help
*Wednesday, September 24, 2014 at 8:23pm*

**math**

At the city museum, child admission is $5.40 and adult admission is $8.70 . On Thursday, three times as many adult tickets as child tickets were sold, for a total sales of $693.00 . How many child tickets were sold that day?
*Wednesday, September 24, 2014 at 8:19pm*

**math**

let the two angles e represented by 'a' and 'b'. obtain two equations for each case, and then find the angles. the angles are adjacent and form an angle measuring 75 degrees. their difference is 21 degrees.
*Wednesday, September 24, 2014 at 8:19pm*

**math**

Suppose your teacher tells you to write a word problem using the number 3. Which would be the best object to use in your problem? Explain. Then write and solve a word problem using that object. (tricycle, bike, wagon)
*Wednesday, September 24, 2014 at 8:10pm*

**math**

Am confused. The bases of a prism are right triangles with side lengths 6 meters, 8 meters, and 10 meters. The height of the prism is 3 meters. What is the lateral area of the prism? What is the total surface area? L=Ph perimeter is side(1) +side(2)+side(3) 6+8+10=24 (3)=72m^2...
*Wednesday, September 24, 2014 at 8:04pm*

**Math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
*Wednesday, September 24, 2014 at 8:02pm*

**Math**

the angles are adjacent and form an angle measuring 140 degrees. the measure of the smaller is 28 degrees less than the measure of the larger.
*Wednesday, September 24, 2014 at 7:59pm*

**Math-calculus**

At a certain point on the beach, a post sticks out of the sand, it's top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(PI/2(t-2)) where t is ...
*Wednesday, September 24, 2014 at 7:54pm*

**Math**

A student states that for any positive integer n the sum of n successive integers is always divisible by n. Which of the following can be used to disprove the student's statements? A) 1+2=3 B) 1+2+3=2x3 C) 1+2+3+4+5=3x5 D) p+(p+1)+(p+2)=3(p+1) E)(p+1)+(p+2)+(p+3)+(p+4)+(p+...
*Wednesday, September 24, 2014 at 7:34pm*

**math **

Raul is x years old now, and Phil is 8 years older than Raul. In 2 years, Phil will be exactly twice as old as Raul is then. How old is Raul now? A. 3 B. 5 C. 6 D. 8 E. 10
*Wednesday, September 24, 2014 at 7:25pm*

**math **

type an expression using n as the variable for this problem. Afamily is having turkey for dinner. There are 52 cal. in each slice. One serving is 3 slices. How many caloties do n people consume if each person has 2 servings?
*Wednesday, September 24, 2014 at 7:23pm*

**Math **

This year, Ms. Nelson's class has 20 students. Which of the following statements must be true? I. This year at least two of these students have their birthdays on a Sunday. II. This year at least two of these students have their birthdays on the same day of the week III. ...
*Wednesday, September 24, 2014 at 7:21pm*

**Math Proof**

On the real line, define d (x, y ) = sqrt(abs(x − y)) . Prove that d satisfies the axioms of a metric.
*Wednesday, September 24, 2014 at 7:19pm*

**math-pre calc**

On a drive from your home to town, you wish to average 48 mph. The distance from your home to town is 106 miles. However, at 53 miles (half way), you find you have averaged only 36 mph. What average speed must you maintain in the remaining distance in order to have an overall ...
*Wednesday, September 24, 2014 at 7:19pm*

**SAT Math **

A student states that for any positive integer n is the sum of n successive integers is always divisible by n. Which of the following can be used to disprove the student's statement? Please provide answer and how you got it! A) 1+2=3 B) 1+2+3=2x3 C) 1+2+3+4+5=3x5 D) p+(p+1...
*Wednesday, September 24, 2014 at 7:05pm*

**Math**

How many liters are in 4.371
*Wednesday, September 24, 2014 at 6:47pm*

**math**

A certain pencil comes 4 in a package for $.75. Find the cost of 24 pencils.
*Wednesday, September 24, 2014 at 6:42pm*

**math**

write an expression using n as the variable for this problem. each day julia rides her bike to and from work. she lives 9 blocks from work and burns 13 cal. per block. how many cal. does she burn in n days
*Wednesday, September 24, 2014 at 6:37pm*

**math**

It is 7 digit even number.There is no repetition of digits. The digit 5 is in thousands place. The greatest digit is in thee millions place. the digit in the hundred thousandsplace twice the digit in the hundreds place.The digit in the thousands place is thetwice the digit in ...
*Wednesday, September 24, 2014 at 6:37pm*

**Math**

Determine whether the given equation is a circle, a point, or a contradiction (no real graph). x^2 + y^2 - 2 x - 16 y + 52 = 0 . The equation is a . (Enter "circle", "point", or "contradiction" in the answer space without quotes.)
*Wednesday, September 24, 2014 at 6:22pm*

**Math**

1/4 of the roses in the garden are red, 1/3 of the remainder are yellow, and the rest are pink. There are 24 more pink roses than red roses, how many roses are there altogether?
*Wednesday, September 24, 2014 at 6:21pm*

**Math 112**

A student asks why "congruent" rather than "equal" is used to discuss triangles that have the same size and shape. What do you say?
*Wednesday, September 24, 2014 at 6:17pm*

**Math-- 1 question**

Use the order of operations to simplify the expression. 2[4(9 – 7) + 1] ÷ 3 I know the answer is 6.
*Wednesday, September 24, 2014 at 6:17pm*

**Math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
*Wednesday, September 24, 2014 at 6:13pm*

**Math 112**

On a test, a student wrote A B ~= C D instead of A B ~= C D. Is this answer correct? Why
*Wednesday, September 24, 2014 at 6:05pm*

**math**

Player B's longest home run distance is 500 ft. There are 5,280 ft in 1 mi.How many home runs would Player B need to hit at his longest distance for the total to be greater than 1 mi?
*Wednesday, September 24, 2014 at 6:00pm*

**math**

Player A's longest home run distance is 484 ft.if player A hits 45 home runs at his longest distance,what would the total distance be ?
*Wednesday, September 24, 2014 at 5:51pm*

**math**

18.75 lbs = 5000 sq ft how much needed to cover 27000 sq ft
*Wednesday, September 24, 2014 at 5:50pm*

**math**

assembly line worker at robs bicycle factory at the sea to bicycle at a rate of 2 seats in 11 minutes. Write a proportion relating to the number of seats s to the number of minutes m at this rate how long will it take to add 16 seats? 19 seats?
*Wednesday, September 24, 2014 at 5:47pm*

**math**

For every girl taking classes at a Martin martial arts school there are 3 boys who are taking classes at the school. If there a 236 students taking the classes write and solve a proportion to predict the number of boys taking classes at the school?
*Wednesday, September 24, 2014 at 5:39pm*

**math**

John can build 7 birdhouses in 5 hours, write an equation that will allow john to calculate the time it will take to build any given number of houses. HOW MANY HOUSES in 40 hours? #2 How long will it take to build 35 houses?
*Wednesday, September 24, 2014 at 5:39pm*

**Math--Teach me?**

Use the order of operations to simplify the expression. 2[4(9 – 7) + 1] ÷ 3 Can someone show me how to do this?
*Wednesday, September 24, 2014 at 5:39pm*

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