# Math

## Recent Questions

**Math**

Which situation can be represented by the expression x plus negative 3? Choose all that apply. A.An elevator went down 3 floors. B.A person spent $3. C.A person added 3 books to the shelf. D.The temperature dropped 3 degrees. My Answers are B and C

**math**

Find the projection of the line 3x – y +2z – 1 = 0, x +2y – z = 2 on the plane 3x + 2y +z = 0.

**math**

1) If y=kx, where k is a constant, and y=128 when x=16, what is the value of y when x is increased by 25%? (I got 160?) 2) Aaron calculates using a certain foot and line spacing, that each page of a typed document contains at least 240 words and at most 260 words. What is the ...

**Math**

There are 20 pink balloons in a bunch of 100. 34 people out of 100 like pink balloons( versus other colors). What is the probability that a person liking pink balloons gets 5 pink balloons when taking 7 random balloons from the bunch? (dependent events)

**Math**

What is the probability of in a room with 15 people, there will be at least one shared birthday?

**Applied Math**

Finding the perimeter.(I checked the other examples on this site but was unable to fine one that I could use that explain the steps . SO can you please help me someone.) If a rectangle length is 6.2 and width is 3.6cm.

**Math**

What is the probability if two dice are thrown of rolling a 5 with one and a 6 with the other?

**Math**

Suppose you decided to keep flipping a coin until it came up tails. Which of these is most likely? a.flipping the coin 11 times b.flipping the coin 12 times c.flipping the coin 14 times d.flipping the coin 13 times

**MATH**

Can someone pls help me Input Output 32 20 14 2 ? -14 -10 ? I am not so sure how to even start or figure it out.

**Math**

SO! how do I solve this problem in inches? A triangle with sides that measures 2 1/2 ft., 20 in., and 1/2 yd. Answer in inches

**Math**

Please help me to understand what it is that I need to do. A rectangle whose length is 5.3 cm and whose width is 2.5 cm

**Math**

How can you find the surface area of a composite solid made up of prisms? I am confused on this and have never done this.

**Math**

What is the square root of 16? A) 3/17 B) sq25 C) 0.6 D) sq 33 I think C Thanks

**math**

please check my work :) which pair of ratios can form a true proportion a-1/2 6/10 b-6/8 5/20 c-3/5 6/10* d-3/9 7/80 thanks

**Math**

A rectangular garden planter is 4 feet long, 1.5 feet wide, and 1.5 feet tall. How much soil can it hold?

**Math**

Trevor has finished reading 55% of a book.The book has a total of 400 pages.How many pages has Trevor read?

**Math**

tan 39°=40/AP, So AP =40/tan. in triangle AQP, angle Q= 60/sin 91°=AP/SinQ. Then bearing of Qfrom P = 30° 180°-(91 angle Q).

**Math**

3. Which of the following statements is true? (1 point) A. All similar figures are also congruent figures B. All congruent figures are also similar figures. C. It is not possible for figures to be both similar and congruent.*** My Answer D.Figures that are congruent cannot ...

**math**

write an equation in slope intercept form for the line that has a slope of 2/3 and y intercept of (0,-5)

**Statistics**

Question 1 - Use the dataset InkjetPrinters.txt to answer the following questions: Data was collected on a sample of 20 different consumer inkjet printers. The dataset contains 5 different properties: Variable Description Printing rate (PPM) Printing rate (pages per minute) ...

**Math**

A rectangle whose length is 5.3 cm and whose width is 2.5 cm.

**Math**

A triangle with sides that measures 2 1/2 ft., 20 in., and 1/2 yd. Answer in inches.

**math**

11 the 2 second power minus 7 times 6 minus 4 to the third power divided by 2

**math**

you find a sales receipt from a store that shows the total price as $40, and the total amount paid including sales tax as $42. a. Write an equation you can use to find the sales tax rate r. b. Can you use r to find the percent for the sales tax?

**Math**

You sell instruments at a Caribbean music festival. You earn $326 by selling 12 sets of maracas, 6 sets of claves, and x djembe drums. Write an equation you can use to find the number of djembe drums you sold. An equation that you can use is ___ =326 Maracas = 14$ Claves= $5 ...

**math**

0.492063492 divided by 226

**math**

3.72380952 divided by 4.16190476

**math**

(3/4 divided by 3/100 - 47/2) divided by 3/2 times 1/2 +7/6 =

**math**

(8.75−17/6) divided by 7.1+(9/2+8/3) divided by 43/10

**math**

13/6-11/15x=0.15 x=

**math**

5/9 divided by x=15/4 x=

**math**

3/x=x/12 x=

**math**

7/x=12/14 x=

**math**

13/6-11/15x=0.15 x=

**Math**

on tuesday evening randy spent 18 more minutes working on his math homework than he spent working on his philosophy readings. If he spent a total of 126 minutes on those two subjects then how much time did he spend on his math homework?

**Math algebra**

It say to find the area of the irregular shape and it's a semi circle with the diameter of 5 and a square measure 8 and I got the area of the rectantagle which is 40 and now I got to find the area of the semi circle but it say the radius for the formula and I can't find get ...

**math**

0.25x-7/6=7/3 x=

**Math**

Mira has 20 gallons of water. She used 8 1/2 gallon to water the roses and 7 1/2 gallons to water lilies. How much water does she use have left?

**math**

Write an equation for the following problem... you spend $16 on 3 notebooks and x binders. Notebooks cost $2 each and binders cost $5 each. Write an equation you can use to find the number of binders you bought.

**math**

you spend $16 on 3 notebooks and x binders. Notebooks cost $2 each and binders cost $5 each. Write an equation you can use to find the number of binders you bought.

**math**

emma made a rectangular picture frame with a heigth of 25 5/6 inches. The frame is 5 2/3 inches wide. What is the hieght of the picture emma placed in the picture frame? explain how you found your answer?

**Math**

A Ferris wheel has a diameter of 140 feet. There are 40 cars for riders, and they are placed at even intervals around the Ferris wheel. What is the best approximation of how many feet apart the cars are placed?

**Math**

Find the inverse function of y=g(x)=2x^3+1

**Math**

Hi there! I need help on this question. I am really confused. In a candy bar, 108 calories are from sugar. There are 240 calories in the candy bar. What percent of the calories are from sugar? A.60 B.45 C.58 D.42 I think it is B but I want to get a second opinion. Thanks!

**math**

f(x)= 3x^2 +12x + 2 when you complete the square, is it y= 3(x+2)^2 - 10

**Math**

You are packing for a vacation. You pack 3 pairs of shorts, 5 shirts, and 2 pairs of shoes. How many different outfits will you be able to make using one pair of each clothing 10 17 30*** 35 I think it is 30.

**Math**

Justin wants to evaluate 3cot(-5pi/4). Which of the following identities can he use to help him? Select two answers. cot(-theta) = cot(theta) cot(-theta) = -cot(theta) cot(-theta) = cot(-theta) cot(theta + pi) = cot(theta) cot(theta + 2pi) = cot(theta)

**math**

53 divided by 3

**math**

Make a box and whisker plot of the data, Algebra final exam scores 88, 92, 60, 80, 97, 58, 81, 47, 83, 65, 72, 78, 90, 92, 94, 87, 80, 50, 60, 52

**Math**

Find the length of a line segment --- CD with endpoint C at (-3, 1) ad endpoint D at (5, 6). round your answer to the nearest tenth, if necessary. A. 9.4 B. 5.4 C. 3.6 ] D. 11.7 Find the midpoint of a segment FG with point F at (-6, 4) and midpoint G at (8, -2) A. (-7, 3) B. (...

**math**

76 divided by ? = 100-12 = What number should be placed in he box to make the statement true

**math**

While she was travelling, Zaina took advantage of the convenience of cash withdrawals on her credit card since her Canadian debit card wasn’t accepted in the country she was in. According to her travel budget she withdrew $200 every day for food, activities and shopping for ...

**MATH**

While she was travelling, Zaina took advantage of the convenience of cash withdrawals on her credit card since her Canadian debit card wasn’t accepted in the country she was in. According to her travel budget she withdrew $200 every day for food, activities and shopping for ...

**math**

a candy dish contains 10 cinnamon drops 10 lemons and 10 peppermints. if two two pieces of candy are chosen at a random what is the probablity of getting a cinnamon drop first and then a peppermint?

**math**

Which measurement is equivalent to the amount of flour needed for one loaf of bread? A .05 B 5,000 C 50,000 D 500,000 A bag of flour weighs 2.5 kilograms. If 1 bag makes 5 loaves of bread, how many grams of flour are needed for each loaf? USE THIS TO ANSWER

**math**

A sequence is given by the rule n-12, where n represents the term in the sequence. What is the 17th term in this sequence?

**math**

Jim ran 2/3 of a 5k race, then walked the rest. How far did walk? How do I set this problem up?

**Math**

Tangent of an acute angle of a rhombus is 3⁄4, whereas its side is 10 cm long. Find an area of the rhombus.

**Math**

Tangent of an acute angle of a right triangle is 1⁄2. Area of the triangle is 25 m2. Find legs of this triangle.

**Math**

In a right triangle, one leg is 40 cm long and the hypotenuse is 104 cm long. Find the tangents of its acute angles.

**Math**

Cosine of a basic angle of an isosceles triangle is 1⁄2, while its area equals 4√3 cm2. Find the lengths of the sides of this triangle.

**math**

Abbi invested $1,000 in a certificate of deposit with a simple interest rate of 4%. Find the interest earned in 8 years. Then find the total of principal plus interest.

**math**

What is the sum of the measures of the angles of a regular decagon? What is the measure of each angle in the decagon? 1,620°; 162° 2,880°; 288° 1,440°; 144° none of these

**Math**

Please check my answers 1. Which ordered pair is a solution of y=x-4? My answer is B (0, -3) 4.Which equation has (2,-1) as a solution My answer is D y=-2x+1

**Math**

Which expression is equivalent? 7 − 4(2x − 3) A) 8x + 5 <--I think that is the answer B) 8x − 19 C) −8x + 5 D) −8x + 19

**Math**

Find the complete factorization of the expression. 48x + 56xy I think it be d. A) 8x(6 + 7y) B) 8x(7 + 6y) C) 8xy(6 + 7) D) 8xy(13)

**Math**

joe spent $27 for wallet and belts.walllet cost 2/7 as much as belt.How much wallet cost?

**math**

How could I solve c) and d) without the use of derivatives for the following question? It is estimated that, t years from now, the amount of waste accumulated, Q, in tonnes, will be Q(t)= 10^4(t^2+15t+70) tonnes, t is greater than or equal to 0, t is also less than or equal to...

**Math**

A density graph for all of the possible temperatures from 60 degrees to 260 degrees can be used to find which of the following? a. The probability of a temperature from 90 degrees to 180 degrees b.The probability of a temperature from 30 degrees to 180 degrees c.The ...

**Math calculus 2**

Find the volume of the solid obtained by revolving the region bounded by y=22*x−22*(x^2) and the x-axis around the x-axis.

**math**

0.25x-7/6=7/3 x=

**math**

13/6-11/15x=0.15 x=

**math**

11/2+0.6x=16 x=

**math**

5/9 divided by x=15/4 x=

**math**

144/25=x/5 x=

**math**

3/x=x/12 x=

**math**

7/x=12/14 x=

**math**

Solve the problem by making up an equation. A child is 12 years old, and his father is 32 years older. In how many years will the age of the father be 3 times the age of the child? Just tell me the equation.

**math**

Ms Johnson gives one eighth of a pizza to each of her 24 students. Write a multiplication expression and a pictorial representation

**math**

1) If 9 and 12 each divide Q without remainder, which of the following must Q divide without remainder? A)1 B)3 C)36 D)72 E)The answer can't be determined from the given info ^I got B 2) If mn does not equal 0, then 1/n^2 times (m^5n^3/m^3)^2 A)mn^4 B)m^4n^2 C)m^4n^3 D)m^4n^4 ...

**math**

Determine whether a figure with the given vertices is a parallelogram. Use the method indicated. A(3, − 9), B(10, 1), C(4, 10), D(−9, 3); Distance and Slope Formulas

**math**

How do you construct a segment that is the square root of 7 inches long since there are no two numbers that you can add together that equal 7 that have equal square. Would one side of the triangle equal 2 and the other the square root of 9?

**math**

Given the set of vertices, determine whether parallelogram ABCD is a rhombus, a rectangle, or a square. List all that apply. A(5, 10), B(4, 10), C(4, 9), D(5, 9)

**math**

An L-shaped concrete slab being prepared for the foundation of a new house is made up of two rectangles with dimensions 3 m by 2 m and 10 m by 6 m. a) Find the total area of the concrete slab. Total area = (3*2) + (10*6) = 66m^2 b) If two bags of cement are required for every ...

**Math**

Yin's average call lasted 3.25 minutes. How much did an average call cost? (Background info: cellphone plan: 30 a month.)

**Math**

A small rug is 36 inch. long. It's width is 2/3 of it's length. What is the width of the rug in feet?

**math**

A salvage ship's sonar locates wreckage at a 12 angle of depression. A driver is lowered 40m to the ocean floor. How far does the driver need to walk along the ocean floor to the wreckage? draw a picture

**math**

A salvage ship's sonar locates wreckage at a 12 angle of depression. A driver is lowered 40m to the ocean floor. How far does the driver need to walk along the ocean floor to the wreckage?

**math**

find all pairs of three-digit numbers such that reversing the order of the digits of one number gives the second number, and where the two numbers add up to 969

**Opt math**

A flagstaff is placed one corner of a level rectangular playground 40m and 30m wide. If the angle of elevation of the top of the flagstaff from the opposite corner of the ground is 45°.calculate the height of the flagstaff.

**MATH**

how do I get to the answer 2.49 from (2.279x^2)^2 +(5.096x)^2 = 19^2? x = 2.49

**Math**

A density graph for all of the possible times from 50 seconds to 200 seconds can be used to find which of the following? A. The probability of a time from 75 seconds to 250 seconds B. The probability of a time from 75 seconds to 150 seconds C. The probability of a time from 25...

**Math**

A density curve for all the possible ages between 0 years and 25 years is in the shape of a triangle. What is the height of the triangle? a) 0.16 b) 0.08 c) 0.02 d) 0.04

**math**

the length of a rectangle is twice the width. If the area is 72 metres squared, calculate the length and the width. length: width:

**Math**

A circular oil slick is expanding with radius, r in feet, at time t in hours given by r=12t−0.3t^2, for t in hours, 0≤t≤10. Find a formula for A=f(t), the area of the oil slick as a function of time.

**math**

A circular oil slick is expanding with radius, r in feet, at time t in hours given by r=12t−0.3t^22, for t in hours, 0≤t≤10. Find a formula for A=f(t), the area of the oil slick as a function of time.

**Math**

The radius, r, in centimeters, of a melting snowball is given by r=55−1.5t, where t is the time in hours. The V=4/3πr^3 cm^3. Find a formula for V=f(t), the volume of the snowball as a function of time.

**MATH PLEASE HELP ME**

when buying a new dress you have a choice of 3 different lengths 5 different colors and 2 different styles. how many choices are there for one dress?

**Math**

Which of the following functions have a vertical asymptote for values of theta such that cos theta = 1? Select two answers. y = sin theta y = cos theta y = tan theta y = sec theta y = csc theta y = cot theta I know what all these functions look like, but I don't know what the ...

**math**

Find the interest. Round to the nearest cent. $1850 at 8% for 14 months