# Math

## Recent Questions

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 ...

Math
Could someone please tell me what the surface area formula is for cylinders and rectangular prisms thanks

math
A little help please, thanks. Kelly conducted an experiment. In each trial she flipped a coin and rolled a number cube that has sides labled 1 to 6. The results are shown above. What is the experiementl probability that her next flip will be tails? Trial 1, Outcome 3, H Trial ...

Math
Write an inequality to represent the situation: the temperature stayed above -15

Math
Can some one help me with my math test unit 2 lesson 17. 7 th grade plz ASAP

Math
Find the missing length for a right triangle with a hypotenuse of 18 and a leg length of 6. Round to the nearest whole number if necessary. 17 324 19 36

math
how do i estimate a square root of a number thats not a perfect square? Without using a calculator. Also, what are square roots? Im really confused

Math
All straight lines measure 180 degrees. In the diagram below, the straight line EF contains three angles, < 3, <4, and <5. If <3 is 90 degrees. What is the measurement of <4 + <5 = _________? A. 180 degrees B. 90 degrees C. 45 degrees

Math
Quadratic equations in problems: "The sides of a right triangle are (x+1)cm, (x+3)cm and (x+5)cm. find the length of each side." i need help asap

Math
1. The cost of producing x hundred litres of olive oil is 20 + 5x dollars. If the revenue from the sale of x hundred litres of the oil is 1.5x2 dollars, calculate to the nearest litre, the number of litres that must be sold to make a profit of \$800. 2. The cost of hiring a ...

MATh Methods
1. The cost of producing x hundred litres of olive oil is 20 + 5x dollars. If the revenue from the sale of x hundred litres of the oil is 1.5x2 dollars, calculate to the nearest litre, the number of litres that must be sold to make a profit of \$800. 2. The cost of hiring a ...

Math
Two number cubes are rolled- one blue and one yellow. Find the probability that the blue cube is less than 3 and the product is 8. a) Is this event independent or dependent? Explain why. b) Find the probability that the blue cube is less than 3 and the product is 8.

Math
**The topic is exponents** A candy maker is making taffy. He starts with one long piece of taffy and cuts it into 3 pieces. He then takes each resulting piece and cuts it into three pieces. He then takes each of these resulting pieces and cuts it into three pieces. He ...

math
Find the probability of rolling an even number and then rolling a 6 when a number cube is rolled twice. Express the probability as percent rounded to 1 decimal place. P(even and then a 6) =

math
Nico is saving money for his college education. He invest some money at 5%, and \$1600 less than that amount at 3%. The investments produced a total of \$144 interest in 1yr. How much did he invest at each rate?

Math
China’s population is how much larger than the U.S if China has a population of 1,362,000,000 and the U.S population is 320,000,000

Math
Which equation represents the axis of symmetry of the function y=-2x^2 + 4x -6 ? a. y=1 b. x = 1 *** c. x=3 d. x = -3

Math - Trigonometry
Solve for x, correct to one decimal place. It`s a right angle triangle. The height for the triangle is 4 cm with a 48° angle. The bottom of the triangle is an x. I got the answer 3.3 cm, is this correct? Any help would be appreciated. Thanks!

math
I'm working on a Venn diagram - would you please check my work? The question is: A group of 95 respondents said they regularly watch Netflix, 60 said they watch Hulu, 20 said they watch neither Netflix or Hulu, and 35 said they watch both Netflix and Hulu. 1. How many ...

Math
Need a little help. I was asked to find perimeter of a rectangle, which I did and got an answer of 66. Now I have to convert it to feet. That's where I'm stuck. What is the perimeter of the actual patio in feet? 2 cm=1ft P=2(12+21)=66cm

Math
Alley sold twice as many health bars as Candi but trice as petal. They sold 88 in total. How many did each person sell?

Math (Word Problems)
Hello and I’m sorry, I was wondering how to solve this problem, it looked easy at first but it was really difficult to find the answer. Here’s the question: A recipe for 6 quarts of punch calls for 3/4 cups of sugar. How much sugar is needed for 9 quarts of punch? A 5/8 B ...

math
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
56 is 15.625 percent of what number?

Math
The density of a substance A rectangular s given as 13.6 g/cm^3 and that of a substance B as 11.3 g/cm^3. Determine the volume of B that would have the same mass as 50 cm^3 of A.

Math
A piece of wire is bent into the shape of an isosceles triangle. The base angles are each 48 degree and the perpendicular height to the base is 6 cm. Calculate the length of the wire.

Write 15% as a decimal. A. 1.5 B. 0.15 C. 0.015 D. 0.0015 Write 5.6 as a percent. A. 56% B. 5.6% C. 560% D. 0.56 Write 0.5 as a fraction A. 1/2 B. 1/20 C. 1/200 D. 1/500 Maya is driving 120 miles to her grandmother's house. She drives 35% of the distance before stopping for ...

H t t p s : // w w w . C o n n e x u s .c o m / content / media / 975134-7312013-31730- PM - 451627306. jpg with out the spaces What is the surface area of the given figure? 10 cm 26 cm 36 cm 28 cm Please help -*-

Math
If a dog ate a cat and there are 1848 cats. If he eats 14 cats a day how many days will it be before he eats them all? NOTE: the momma cat is pregnant with 28 more cats.

When they show this in math ^2 does it mean to multiple twice?

math
You jogged 11 kilometers at an average speed of 10 kilometers per hour. How long did you jog? I need help please

math
A cheetah traveling at 31 m/s chased its prey for 11 seconds. What distance did the cheetah travel during the chase??

What is the volume of the trianglar prism to the nearest whole unit? ( Connexus Unit 2 Lesson 13 grade 8th) Height: 4 ft Base: 14 ft Length : 21 ft A - 392 ft^3 B - 588 ft^3 C - 1176ft^3 D - 2352ft^3 I think it's B. I am right?

Math
A ladder is placed so that its foot is 2 m from a wall. The ladder touches the top of a 2 m fence that is 1.5 m from the wall. State how you know the two triangles in the diagram are similar. How high up the wall does the ladder reach?

Math
At 6:00 A.M. the temperature was 33Â°F. By noon the temperature had increased by 10Â°F and by 3:00 P.M. it had increased another 12Â°F. If at 10:00 P.M. the temperature had decreased by 15Â°F, how much does the temperature need to rise or fall to return to the ...

Math
Simplify. -2(3)^2 - 8 ÷ 2 + 6 A) -18 B) -16** C) -7 D) 7 Lucy is trying to find a rational number between 3/8 and and 6/7 What would help her to find this number? A)Divide 3/8 by 6/7*** B)Multiply 3/8 by 6/7 C)Convert 3/8 and 6/7 to Fractions with a common denominator. D) ...

Math
A group of students are selling homemade oatmeal cookies at \$3 per bag. The students spent \$23 on all the supplies to make the oatmeal cookies. Which expression can be used to find the profit made from selling, w, bags of oatmeal cookies, after accounting for the amount they ...

Math
David is playing a trivia game where he gains points for correct answers and loses points for incorrect answers. At the start of round 3 his score is −1500 points. During round 3 he answered five 1000 point questions correctly and three 500 points questions incorrectly. ...

Math again sorry
A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet. How far below or above the deck is the coaster after the second ...

Math
At 6:00 A.M. the temperature was 33°F. By noon the temperature had increased by 10°F and by 3:00 P.M. it had increased another 12°F. If at 10:00 P.M. the temperature had decreased by 15°F, how much does the temperature need to rise or fall to return to the original ...

Some help me- Math
Chris tells Adam that the decimal value of −1/13 is not a repeating decimal. Is Chris correct? A) No, because the fraction has a decimal period of 3 B) No, because the fraction has a decimal period of 6 C) No, because the fraction has a decimal period of 9 D) Yes, because ...

Math Im very confused
How many whole servings of 3/4 cups are in 31/2 cups of ice cream? A) 19 servings B) 20 servings*** C) 21 servings D) 22 servings

Math
Myra multiplies 5 integers. The product is negative. AT MOST, how many of the integers could be negative? A) 1 *** B) 3 C) 4 D) 5

The temperature started at 35°F. If the temperature went down 4°F and then up 2°F, whats is the temperature difference relative to the high temperature? A) -2°F*** B) -1°F C) 1°F D) 2°F

A tree's root is 13 feet below ground and spans a radius of 8 feet. If the tree's elevation above ground is 28 feet with branches that span a radius of 12 feet, what is the total length of the tree from root tip to top? A) 15 feet B) 35 feet C) 41 feet D) 47 feet ***

Math
f(x) = 9x^3+2x^2-5x+4 and g(x) = 5x^3 -7x+4 What is f(x) - g(x)? Write the final answer in factored form.

Math
Suppose that D + E = A, that N/A = 0.18 and that D/A = 0.85 . Solve for N/E.

math
A cone has a height of 5 inches and a circumference of 56.52 inches. Which measurement is closest to the volume of the cone in cubic inches? Use 3.14 for 7x5. a.1695.6 b.1271.7 c.887.36 d.423.9

math
Water is being pumped out of a pool. the number of gallons of water W left in the pool at time t in minutes can be modeled by W(t) = -7t+ 350. Find the y-intercept and explain what it represents in this problem.

Math
In a class 1/3 are boys.If 2/5 of the boys are absent, what fraction of the boys is present?

Math
Explain how the areas of a triangle and a parallelogram with the same base and height are related.

Math
Marisa spent 3/4 of her money on a necklace. She spent 1/2 of the remainder on earrings. The necklace cost \$30.00 more than the earrings. How much did the necklace cost?

math
The width of a rectangle is 3 units less than the length. The area of the rectangle is 28 units. What is the width, in units, of the rectangle?

math
Which set of three side lengths will NOT form a triangle? A 17, 12, 6 B 25, 38, 13 C 36, 14, 27 D 39, 44, 6

1) C=md+t The cost C, of a business trip is represented by the equation above, where m is a constant, d is the number of days of the complete trip, and t is the cost of transportation, which doesn't change. If the business trip was increased by 5 days, how much more did the ...

Math
The formula for voltage is 180(sin(120pi*t)-sin^(3)(120pi*t))/(sin(​120pi*t)cos120pi*t). What would be the voltage if time was 0? 0?

Math
Abdul is 5 feet tall. Which equation can be used to determine h, Abdul's height in centimeters, if 1 inch is equal to 2.54 centimeters? A) h=2.54(5) B) h=1/2.54 (5)(12) C) h=2.54 (5) (12) D) h=1/2.54(5)

Math
The 16th term of an AP is three times the 5th term. If the 12th term is 20 more than the 7th term, find the first term and the common difference.

Math Algebra Help
The men’s U.S open tennis court is held annually in Flushing Meadow New York City. In the first round of the tournament, 64 matches are played. In each successive round, the number of matches decreases by 1/2. Make a rule for the number of matches played the nth round. For ...

Math - Algebra
An architect is designing a building in the shape of a rectangular pyramid. The number of windows on each floor forms an arithmetic sequence. There are 76 windows on the 7th floor, 68 on the 8th floor, and 4 on the very last floor Find an explicit formula to show this sequence...

math
A square is inscribed inside a circle with radius r cm. a) Express the edge length of the square in terms of r and so find the area of the square in terms of r. Using side, 's' would make it much easier, but the question asks for me to find the area of the inscribed square ...

Math
200 cans of food were distributed to 3 charity homes. 2/5 of the cans were given to the first home, 1/3 of the remainder to the second home and the rest to the third home. How many cans did the third home receive?

math
CAB YOU GUYS PLEASE HELP WITH MY Lesson 11: Graphing, Equations, and Inequalities Unit Test BECAUSE IT HAS TO BE DONE AT 12:30

Math
Need help working this problem out, any assistance is appreciated. A dance studio measures 150 feet by 120 feet. A scale drawing of the dance studio floor measures 10 units by 8 units. What scale was used to create the scale drawing? A) 1 unit: 8 feet B) 1 unit: 10 feet C) 1 ...

math
A rubber band is strung around six circles (each with radius r cm). a) Show that the area of the shape is given by the expression r^2(12+6√3+π). b) Show that the total length of the rubber band is given by the expression 2r(6+π).

math
determine which figure matches the pattern for the givin base side and front Base 2 squares side two side one up front two up

Math
the average length of time for students to register for fall classes at a certain college has been 50 minutes. a new registration procedure using modern computing machine is being tried. if a random sample of 12 students had an average registration time of 42 minutes with a ...

math
Solve for y in the equation tan(3y +32)=cot(y-32)

math
A chocolate box has dimension 50cm×35×10cm. If60 boxes of chocolate are to be covered by wrapper,how many square meters of wrapping material will be required?

math
A chocolate box has dimension 50cm×35×10cm. If60 boxes of chocolate are to be covered by wrapper,how many square meters of wrapping material will be required?

Math
In December 2010, the average price of regular unleaded gasoline excluding taxes in the United States was \$3.06 per gallon, according to the Energy Information Administration. Assume that the standard deviation price per gallon is \$0.06 per gallon to answer the following. (a) ...

Math
Write an equivalent expression. Use an associative law. (x + 5) + y

math
ABC phone company charges\$23 per month plus8¢ per minute of phone calls. XYZ phone company charges\$11 per month plus11¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?

Math
39. Which of the following is the appropriate prefix to measure the amount of space taken up? A. Mili B.Deca C.Kilo D.Micro

Math (Pre Calc)
If two forces of 5 lb. and 8 lb. are acting on the same point are equivalent to a single force of 10 lb., find the angle between the given forces, and the angle between the resultant and the larger force. I am not allowed to use law of cosines I must use vectors.

Math (pre calc)
You have recently been promoted and are now a senior pilot with BHS Exprress, providing courteous and timely service to countless cities across the Northeast. In order to arrive in New York City at the scheduled time, you know you must fly at a speed of 380mph on a course of ...

math
What does it mean for concavity of the original graph if there is an asymptote in the f'' graph?

Math
The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs will be between what weights? B)What percentage ...

math, algebra, word problems
Greg and Gary start a bicycle race at the same place and time.Greg travels at a constant speed of 16 miles/hour and Gary at a constant speed of 12 miles/hour. Greg finishes the race 2 hours ahead of Gary. How many miles did Greg travel in the race? Please help me with a simple...

math
Solve the following equation for B: A=[h(b+B)]/2

Math
Pamela is 10 years younger then Jiri. The sum of their ages is 68. What is Jiri's age?

Math
The sum of all the even numbers less than and inclusive of E is 197580. (a) What is the value of E? (b) What is the sum of all the odd numbers less than E?

Math
The following series does not go below zero: 2016+2005+1994+...+L (a) What is the smallest possible value of the last number L ? (b) Find the sum of the series.

Math - binomial
Find the indicated term in the expansion of the given binomial. The term that does not contain x in the expansion of (6x+1/2x)^12 Is there an easier way to find the answer instead of going through finding 13 terms Thanks.

Math
In the same carnival there is a similar game of chance. The game involves a small bag containing 30 marbles where 12 are green and 8 are yellow and the rest are brown. You win 20 pesos if you are able to draw green marble and you win 10 pesos if you are able to draw a yellow ...

math
The position vectors A and B with respect to the origin O,(-8,5) are (12,-5)and respectively. Point M is the midpoint of AB and N is the midpoint of OA. (a) Find: (i) The coordinates of N and M; (ii) The magnitude of NM, (b) Express vector NM in term OB. (c) Point P maps onto ...

Math - binomial
Find the indicated terms in the expansion of the given binomial. The first three terms in the expansion of (x+1/x)^40 first term second term third term

math
A nurse must give 1 12 milligram of a drug for each kilogram of patient weight. If Mr. Krisanda weighs​ (or has a mass​ of) 60 ​kilograms, find the amount of the drug Mr. Krisanda should be given.

Juanita covered the outside of a gift box shaped like a rectangular prism with paper. The box is 3.2 feet long, 2.1 feet wide, and 2.7 feet high. Which of the following is closest to the total surface area of this box? a)34ft b)42ft c)30 d)18

Math
Christian is 3 times as old as Marie. Marie is 12 years younger than Christian. How old is Christian?

Math
The growth of a colony of 800 bacteria can be modelled by N=800(2)^t/3 in which N is the number of bacteria after t hours how many bacteria are present after 12.7 hours

math
1) John usually gets to work by driving 29 miles down Greenwich Street, which goes from his house to his office in a straight line. One week, Greenwich Street is closed due to construction, so John gets to work by driving 13 miles wests on 57th street, and then turning onto ...

Math
Help! I really hate these kind of questions because this is my weak point. (Don't ask why. I just don't understand these kind of questions that easily) Find 19/25 of \$25,000. A: \$2,500 B: \$15,000 C: \$19,000 D: \$1,900 I think it's either C or B. Those are not guesses. I said ...

Math
the position vectors od points A and B woth respect to the original O, are (-8,5)and (12,-5) respectively. point M is the midpoint of AB and N is the midpoint of OA. Fin the coordinate of N and M; the magnitude of NM

Math
Can you help me write this percent as a fraction please? The percent is 365. I already wrote it as a decimal which is 36.5. I just need help writing it as a fraction now.