# Math

## Recent Questions

**math**

How is adding and subtracting mixed numbers similar to adding and subtracting fractions? How is adding and subtracting mixed numbers different than adding and subtracting fractions? Give examples to explain your answer.

**math**

Prove in Fraction if a>b>0, c<0

**math**

the radius of a circular cricket field is 60 m. M and N are the ends of a diameter of the field. To walk from M to N, about how much further is it to walk around the boundary than straight across the field?

**math**

in the diagram below, WZ is the diameter of the semicircle. X is the midpoint of the line WZ. UVWY is a parallelogram. Find the value of UYZ

**math**

Galaxy has 4d stamps. Darcie has 3 times as many stamps as Galaxy. Ellie has 16 stamps. How many stamps do Darcie and Ellie have?

**Math**

An athletic trainer for Newcastle United in England keeps track of the amount of water players drink during preseason training. The trainer observed that the amount of water consumed is a linear function of the temperature in a a given day. The trainer find that when it is 53 ...

**Math**

In a class of 20 students, the average (arithmetic mean) score on a test is 84 points. If 6 students each scored 100 points and 4 students each scored 50 points, what is the average of the scores of the remaining students?

**math**

If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

**math**

There are 4 store fronts on the ground floor of a shopping center. One of four stores will go in each store front – a pharmacy, grocery, barber shop, and coffee shop. How many different possibilities are there for arranging the shops in the storefronts?

**Math**

Find the measure of two complementary angles if the measure of one angle is 30˚ greater than the measure of the other. What is the measure of the larger angle? What is the measure of the smaller angle?

**Math**

I have supplementary angles where the measure of one angle is ¼ the measure of the other. What is the measure of the larger angle? What is the measure of the smaller angle?

**Math**

What is the equation for 1/2 as many men as women. Let m equal men and w equal women. ^i got m=1/2w

**Math**

Find the measure of two complementary angles if the measure of one angle is 30˚ greater than the measure of the other. What is the measure of the larger angle?

**math**

The position vectors A and B with respect to the origin O, are (-8,5)and (12,-5)respectively. Point M is the midpoint of AB and N is the midpoint of OA. a) Find: i) The coordinates of N and M; Point N = OA N = (0 + -8)/2, (0 +5)/2 = (-4, 2.5) Point M = AB M = (-8+12)/2, (5+ (-...

**math**

jorge ran 1/4 miles on monday . on tuesday he ran 3/4 miles less. how far did he run on tuesday?

**math**

Ruth needs 3 1/4 yards of fabric to make a small quilt. She has 1 7/8 yards in her fabric box. how much more fabric does she need to buy?

**math**

jessie and jeff are planting seeds. Jessie said she planted 3/8 of the seeds and jeff planted 2/3 of the seeds.Is this possible? explain why or why not?

**Math**

The question asked whether or not f(x) = 0.5e^x when x is less than or equal to zero and f(x) = 0.5e^(-x) when x is greater than or equal to zero is a valid probability density. I know that it is the integral... but usually you have a domain that is not a single point. Should ...

**math**

which word or words correctly complete the sentence? a ________ has five faces, five vertices, and eight edges. a. triangular pyramid b. cube c. pentagonal pyramid d. rectangular pyramid

**math**

In a class of 20 students, the average (arithmetic mean) score on a test is 84 points. If 6 students each scored 100 points and 4 students each scored 50 points, what is the average of the scores of the remaining students?

**math**

A team of scientists found that there were 4 oak trees for every 10 pine trees. How many oak trees were there if they counted 36 more pine than oak?

**math**

Identify all the sets to which the number 0.41567 belongs

**Math**

John have $24. He spent 1/4 of his money on jeans and 2/5 of the remaining on a cap. How much money did John spent

**math**

Simplify logx(x/4)+3logx(2/5)-log21(2/25)

**Math**

In the exercise we want to use a substitution to integrate integral xsqrt(x+1)dx. Find the substitution u to transform the integral into integral(u-1)u^(1/2)du. u=?

**Math**

How many times in a 12 hour period does the sum of the digits on a digital clock equal 6? (For example. 1:32 = 1+3+2 = 6

**Math**

A rectangular piece of paper has length 14 cm and breadth 12 centimetre a square piece of paper of perimeter 24 cm is cut off from it find the area of the piece of paper left

**Math**

1) If a^b =x and x^b=y then A)a^2b =y B)a^b^2 =y C)b^a=y D)(ax)^b=y E)(ax)^b=x I got B? 2) If a and b are the coordinates of two points on the number line, then which of the following is equivalent to the statement that the absolute value of the distance from a to b is greater...

**math**

Find the point(s) of intersection between the circle x^2 + y^2 = 50 and the linear equation y = 2x − 5.

**math**

petrol price rose from x cents/ liter to y cents/liter. Before the rise, it costs $a t fill my car with petrol. What is the new cost to fill it?

**Math**

the stopping distance of an automobile is directly proportional to the square of its speed v. a car required 90 feet to stop when its speed was 70 miles per hour. find a mathematical model that gives the stopping distance d in terms of its speed v. D= Estimate the stopping ...

**math**

can someone help me with lesson 5 unit 3 math “finding the area of composite figures” practice?

**Math**

A tree house is being constructed with support beams that create right triangles. If the legs of the triangle created measure 2.5 ft and 3 ft, what are the angle measures of the non-right angles? 39.8 and 50.2 ***** 68.5 and 21.5 87.6 and 2.4 56.4 and 33.6

**Math**

Mario’s Pizzeria bakes olive pieces in the outer crust of its 20-inch (diameter) pizza. There is at least one olive piece per inch of crust. How many olive pieces will you get in one slice of pizza? Assume the pizza is cut into eight slices.

**math**

Laurie buys milk and bread for his family on the way home from school each day, paying with a $10 note. If he buys three cartons of milk and two loaves of bread, he receives 5 cents in change. If he buys two cartons of milk and one loaf of bread, he receives $4.15 in change. ...

**Math**

Trina works after school and on weekends. she always works three days each week. this week she worked 2 3/4 hours on monday, 3 3/5 hours on friday and 5 1/2 hours on saturday. next week she plans to work the same number of hours as this week, but will work for the same number ...

**Math**

When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer. b. Excluding the ...

**math**

1. Find the area of a parallelogram with base b and height h. b = 87 cm h = 18.6 cm (1 point) 105.6 cm2 211.2 cm2 809.1 cm2 1,618.2 cm2 2. Find the area of the triangle. A triangle has a base of 21 yards and a perpendicular height of 8.2 yards. (1 point) 33.62 yd2 86.1 yd2 344...

**@Poster in Kansas**

I've removed your math test. If you want to post no more than 3 questions and your answers, please do so. Asking for over 20 answers is cheating.

**MATH HELP ASAP**

Order the numbers 0.64, 2/3, 65%, and 7/10 from least to greatest.

**math**

Which number has the greatest absolute value? a. -3 b. -8 c. 2 d. 5

**Math**

Every member of a high school class of 150 students was polled to see whom they would vote for in the election for student body president. The poll results are shown below. Candidate 1 46% Candidate 2 30% Undecided 24% If half of the undecided voters vote for Candidate 1 and ...

**Math**

3. which equation can be used to find the measure of an angle that is supplementary to EGB ? A.m<EGB+m<AGD= 180 degrees B.m<EGB+m<AGD= 180 degrees C.m<EGB+m<BGF= 180 degrees D. m<EGB+m<BGF= 180 degrees Help? I don't understand it. Please dont give ...

**Math**

A survey given to a random sample of 250 students at a small University asks which facility they use most often. The results are shown in the table above. If the results of the sample are projected to the entire student population 1,000 students, which of the following is the...

**MATH**

Hello, I was wondering why people seemed to be getting banned. Isn't this website for cheating?! Anyway if it Is, i need at least help with this question,, Its an irregular figure and i need help finding area irregular polygon

**math**

Find the surface area of the prism 5m 9m 12m 1.426m 2.306m 3.336m* 4.213m

**MATH**

Could someone please post the answers to Lesson 17 Unit 2 Measurement Unit Test Please!!!!!!!!!!

**Geometry math**

1: what is the correct classification for the triangle shown below? 1:acute, scalene<I pick this 2:acute, isosceles 3:right, scalene 4:obtuse, scalene 2:what is the value of x in the triangle? 1:38 2:71<I pick this 3:76 4:142 3:a right isosceles triangle has an angle ...

**Math**

It cost your office $620 to mail 500 flyers. How much did it cost to mail each flyer?

**math**

Show that there is at least one point of intersection between the parabola y = −2(x + 1)2 − 5, where y = f(x), and the straight line y = mx − 7, where y = f(x).

**Math**

What is the perimeter of a garden that is 75/4 yards wide and 27/2 yards long?

**Math**

A particular Chemistry book costs $6 less than a particular Physics book. Two such Chemistry books and three such Physics books cost a total of $123. Construct two simultaneous equations and solve them using the substitution method. Show your working. I just need help ...

**Math**

when an aircraft takes off, it accelerates until it reaches its takeoff speed V.In doing so it uses up a distance R of the runway, where R is proportional to the square of the of the takeoff speed. If V is measured in miles per hour and R is measured in feet, then 0.1639 is ...

**Math**

Suppose A is directly proportional to the square of B,and A=45 when B=3. a)Find the constant of proportionality b)Write the formula for A in terms of B c)Use your formula to find A when B=6

**Math**

Unit 3: Using Graphs to Analize Data Lesson 2 Frequency

**math**

Dear people of Jiskha, Thank you for helping me today

**Math**

A student wrote this statement: "A triangular prism has a height of 15 inches and a base area of 20 square inches. The volume of the prism is 300 square inches." Identify and correct the error. I am not sure because I am new at doing this kind of math. Please help.

**Math**

Only boxes less than 3 1/2 ft wide will fit through a doorway. Which measurements show Th widths of three boxes that will each fit through the doorway?

**Math**

Good evening. I have a math problem that I just need a bit of help on please. A trap for insects is in the shape of a triangular prism. The area of the base is 3.5in and the height of the prism is 5 in. What is the volume of this trap? Do I just need to do 5 x 3.5in? Thank you

**Math**

Shandel went to the County Fair this summer and was surprised to see a math game on the midway among the games of skill and chance. Picture of a Midway BarkerIn the game, the barker starts by thinking of a math rule or calculation. The player spins a number wheel to get her ...

**Math**

A CRATE OF SOFT DRINK CONTAIN 9 COKE,6PEPSI AND 4LINC ADA PICK ONE BOTTLE OF THE SOFT DRINK AND THEREAFTER ADE PICK ANOTHER BOTTLE.FIND THE PROBABILIY THAT 1.THEY BOTH PICK LINCA 2.ADA ONLY PICK PEPSI 3.THEY BOTH PICK THESAME BRAND.

**Math**

An encyclopedia set has 36 volumes. Each volume is 1 1/4 inches thick.Three volumes have already been placed on the shelf that is 30 inches long. What information is not needed to determine how many more volumes will fit on the shelf?

**Math**

For safety reasons, the angle between a ladder and the ground should be between 65° and 80. A ladder that is 5 m long is placed so that it reaches a window on the top floor of a house. If the foot of the ladder is 1.5 m from the house, is the ladder safe? Explain your answer.

**MATH**

Does anybody know how (M+/- √M^2-4FGr^2/G))/2 equal to 1.85*10^30+/- 1.32*10^30 When M=1.85*10^30,F=5.00*10^25, G=6.67*10^-11 and r=1.5*10^12. I don't know where 1.32*10^30 comes from. Please explain with steps

**Can someone help me Math problem!!**

1. Which of the following is equivalent to x^5y^2/xy^2 when x not= 0 and y not= 0? a. x^6y^5 b. x^5y c. x^4y d. x^4

**Tutor**

Hi, I am a student a Michigan's connections academy and I need a tutor to help me out with some types of math, science, social studies. And a few others some stuff I don't understand and all of my teachers don't explain very good except for my math teacher. I understand math ...

**Math**

3(4 - 2x) = 2x? How do I find x

**Math**

what are the perimeter and area of a rectangle with a length of 20in and a width of 50in

**@Anonymous---Chemistry/math/etc**

You've been banned for spamming the board.

**math**

Gabriela has dinner at a cafe and the cost of her meal is $45.00Because of the service, she wants to leave a 15% percent tip. What is her total bill including tip?

**Math**

-2v - 7 = -23 what is v?

**math**

1. A bag contains 9 tiles numbered 1 to 9. P(4) = (1 point) experimental; the result is found by repeating an experiment. experimental; the result is based on the number of possible outcomes. theoretical; the result is found by repeating an experiment. theoretical; the result ...

**Math-Physics**

What is the total force on the bottom of a 400-cm-diameter by 1.5-m-deep round wading pool due to the weight of the air and the weight of the water? (Note the pressure contribution from the atmosphere is 1.0 x 10^5 N/m^2, the density of water is 1 g/cm^3, g=9.8m/s^2.) (Answer...

**Please help Math**

1. There are 3 red paper clips, 5 yellow paper clips, and 6 silver paper clips in a jar. What is the ratio of the total number of paper clips to the number of red paper clips? (1 point) 14:3 11:3 3:14 3:11 2. Which of the following ratios is equivalent to start fraction 12 ...

**math**

The volume of ice-cream in the cone is half the volume of the cone. The cone has a 3 cm radius and height of 14 cm. What is the depth of the ice-cream, correct to 2 decimal places? Answer = 11.11

**math**

I need help with Lesson 11: Tools of Geometry Unit Test Essential Math 6 B Unit 2: Tools of Geometry

**Math**

What is conliniear points

**Math**

A bicycle wheel has a diameter of 63cm how many meters does the bicycle travel for 100 revolution of the wheel

**Math HELP!!!!**

Median household income for African-Americans in Baltimore is nearly half that of whites, $33,610 compared to $60,156, according to the report by the US Census Bureau.? What is the fraction of this report? IN NEED OF STEPS

**Math**

Is 146% of 33,610 two-thirds?

**Math**

Which three dimensional figure will this net make?

**math - quadratic problems**

1. What must be the dimensions of a rectangle to have an area 125m^2 and a perimeter of 60m? 2. In a right angle the hypotenuse is 15cm. if the second side is twice the length of the third side, calculate the exact length pf the shortest side. 3. THe height h metres of a ...

**Math**

If 100 students surveyed, about how many students own 2 or more pets? Explain

**math**

the dimensions of a triangle are shown below. if the height of the triangle is increased by a factor of 4, which statement will be true about the area of the triangle? a. the area will increase by the factor of 2 b. the area will increase by a factor of 4 c. the area will ...

**math**

which shapes will have an area of 24m2? choose all that apply. a. a triangle with the base of 6m and a height of 4m b. a parallelogram with a base of 48m and a height of .5m c. a trapezoid with the bases of 9m and 3m and a height of 4m d. a triangle with a base of 8m and a ...

**Math - Algebra**

Need help understanding this problem. Looks like an exponential growth/decay. Magnesium-27 has a half life of 9.45 minutes and can be described by using the equation “y=ae^-kt . What is the decay constant (k) for Magnesium-27? How many mg of Magnesium-27 will remain after 1....

**math**

pb is a line segment on a number line. it has endpoint at -2 and 12. what is the coordinate of it's midpoint? Show your work so that way i can understand it

**math**

a parallelogram and a triangle both have a base of eight inches the height of a parallelogram is four inches what is the height of the triangle if both of the shapes have the same area? a. 2 in b. 4 in c. 8 in d. 10 in

**Math**

The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is. How far away is a storm if 6 seconds elapse between the lightning and the thunderclap? Use the formula d= t/3 , where t is the time, in seconds, ...

**Math**

How tall is a stack of 16 nickels

**Math**

I am a bit confused. I have to find the volume of a triangular prism. B=1/2bh=1/2 (8x3)=12ft Now I have to find the volume how would I do this with the numbers provided

**Math**

The expression below represents the number of boxes of cookies sold by a girl scouts troop with 14 members at the school fair, where x is the number of days after the first day of the fair. Interpret the meaning of each term in the expression. What are the terms?!

**Math**

A carpenter sawed a piece of wood into 3 pieces of wood into 3 pieces. The ratio of wood pieces is 1:3:6. The longest piece is 2.5 feet longer than the shortest piece. Use the draw a diagram strategy to find the length of the original piece.

**Math**

For a constant area, the length of a rectangle varies inversely as its width. The length of a rectangle is 27 ft when the width is 10 ft. Find the width of a rectangle with the same area if the length is 18 ft.

**math**

Blake and Luke can paint a room in 15 hours. Luke can paint the room by himself in 25 hours. How long does it take Blake to paint?

**Math**

A bakery used 9 cups of flour to make a full size cake. If they wanted to make a cake that was 1/10 the size, how many cups of flour would they use?

**math**

if charlie can type 75 words in 100 seconds, how many words can he type in 5 minutes

**Math**

List 12pt 3gal and 16c from least to greatest

**Math**

Does the table represent an exponential function? x 1 2 3 4 y –1 –8 –27 –64, I think it does.

**math**

John is buying floor tile to put in a room that is 10 ft by 15 ft. He has chosen tiles that are 18 in by 18 in. Assuming that he needs to buy 10% extra to be safe, how many tiles would he need to buy. I know that I need to buy enough for 150 square feet, but I'm not sure what ...