# Math

## Recent Questions

English
1. You will must go hunting. (X) 2. You will have to go hunting. (O) 3. He may can lift the rock.(X) 4. He may be able to lift the rock. (O) 5. She must can solve the math problem. (X) 6. She must be able to solve the math problem. (O) (Are the marks, X's and O's, used ...

math
a boy has enough money to buy 20 exercisew book.if each book cost 25 paise less,he could buy 2 more books and still have 20 paise left.how much money did he have??? ans (48 rs)?

Math
Six people are planning a five day backpacking trip. The trail they will take is 67 miles long. Everyone 12 and older will carry a 40- pound pack. Everyone younger will carry a 20-pound pack. What is the total weight (in pounds) of the groups backpack? The answer I got is 12 ...

math
Angle DEF 90degree =DEF and13 santimeter DF =5 sanrimeter find DE and EF

Math
solve the equation c/4 -5 =4 Please show all steps please!

Math
What is the y-coordinate of point b if the slope of line ab is 5. B(3,y). A(2,4). I added 3+2=5. And added +4 =9 is this right

Math
Together, two designers have to make 31 dresses in one month. Jane has to sew 5 more than her partner , aunt Tina. How many dresses does Jane have to make? 1. 13 2. 18 3. 23 4. 26 5. 36 The. Answer I have is 20 or 21 it's not on the list what am I doing wrong

Math
5x10^2=5x100=500. 3x10^3=3x100=300.

The area of the base of the regular quadrilateral pyramid is 36 cm2 and the area of a lateral face is 48 cm2. Find: Surface area of the pyramid

Math (integrals) (Substitution)
I am given an integral to solve with given substitution values. I got an answer, but I'm not quite sure if it's correct as an online integral calculator gave a different answer. ∫ x sqrt(4-x) dx Given that u = 4-x . In this case, x = 4 - u du = -dx Now.. =- ∫ (4-u)sqrt(u) ...

Math
Yumi walked 2 km to a bus stop to catch the bust to school. The bus arrived straight away and averaged 60km/h for the 5km trip. Yumi's total travelling time was 25 minutes. at what average speed did Yumi walk to the bus stop? The answer is 6, but the only thing I could think ...

Math
A dog walker charges \$10 to come to your house and then \$2 per mile walked. She charged you \$16. Which equation could you use to determine how far she walked your dog. Can you please help? Im thinking its 16+10=2m

Math
Mrs. Roberts plans to purchase a microscope for a present as a Christmas gift. The A model magnifies to a maximum of 5 x10 2 power , while the b model magnifies to a maximum of 3x10 3 power times. Which of the following statements is true? 1. The b model is 6 times stronger ...

math urgent!
You flip a coin 20 times and get tails 15 times. You flip the coin 80 more times. What do you expect to happen to the experimental probability of getting tails as you increase the number of trials? The experimental probability will get closer to 50% The experimental ...

math
a teacher teaches two class and each class contains 35 students. if she grade final exam at a rate of 15 minutes per exam. how many minutes will it take to grade all final . how many hours is this?

Math
A set of stairs has a rise of 6 inches and a run of 9 inches. The building safety code says the stairs should rise at an angle of between 30 degrees and 35 degrees. Does this set of stairs meet the safety regulations? Justify your answer by showing mathematical proof.

Math
A ramp has a slope of 0.25. If the rise is 4 feet, what is the horizontal distance covered by the ramp?

math
The following data were obtained for the growth of a sheep population introduced into a new environment on the island of Tasmania (adapted from J. Davidson, ‘‘On the Growth of the Sheep Population in Tasmania,’’ Trans. R. Soc. S. Australia 62(1938): 342–346). t (year...

math seriously help me
Sally graphs the geometric sequence an = 2(3)n - 1 on a coordinate plane where she plots an on the y-axis and n on the x-axis. This graph is the same as the graph of which type of function? A) cubic B) linear <my answer C) quadratic D) exponential

Please limit yourself to your own questions or USEFUL answers. Posting that you agree with a professional math teacher is ridiculous!

Math PLZ check soon!
1 Which of the following sample spaces correctly lists all the possible outcomes for flipping a coin and spinning a four-colored spinner (red, blue, green, and yellow)? (A) H-red, H-blue, H-green, H-yellow, T-yellow, T-green, T-blue, T-red *** (B) H-red, T-red, H-blue, T-blue...

math help. (check answer)
All the surfaces of the lantern will be made of paper. What is the least amount of paper needed to make the lantern? A. 140 Cm^2 B. 144 Cm^2<---(my answer) C. 180 Cm^2 D. 432 Cm^2 Height = 12 Cm Length = 6 Cm Width = 6 Cm

Statistics
There are 3 short questions on math test. for each question, 1 mark will be awarded for a correct answer and no mark for wrong answer. if the probability that mary correctly answers a question in a test is 2/3, determine the probability that mary correctly answers a question ...

Math
Three out of 200 machine parts were found to be defective. About how many parts would be expected to be defective out of 2500 parts? A. 15 B. 30 C. 38 D. 67

math
Sally graphs the geometric sequence an = 2(3)n - 1 on a coordinate plane where she plots an on the y-axis and n on the x-axis. This graph is the same as the graph of which type of function? A) cubic B) linear <my answer C) quadratic D) exponential

Math
Juan bought a new shirt on sale for 30 percent off the original price. He paid \$28 dollars for it. What is the original price?

Math
Im sorry for bombarding you guys with questions. I've only needed help with 3 of 40 so far.. Anyways, moving on! 3! = 3 * 2 * 1 4! = 4 * 3 * 2 * 1 5! = 5 * 4 * 3 * 2 * 1 30! = 2^x * N where N is odd. What is the value of x? I have no idea where to start, but reading the rest ...

Math
1/3 * 2/4 * 3/5 * 4/6 * 5/7 *... ... ... * 98/100 = ? Is there a specific way on how to calculate this?

Math
What value of x makes the equation below true? 7x-1=9 A. 10/7 B. 8/7 C. 2/7 D. 16/7

What is true of a random sample? A) it is the only way to sample a population. B)Each member of the sample is a volunteer. C) It is always the easiest way to sample a population. D) Each member of the population has an equal chance of being selected. MS. SUE PLEASE HELP!!

Which of the following is always true? A. 5x2(r+7)=2x5(r+7) B. 5+2(r+7)=2+5(r+7) <<< My Answer C. 5/2(r+7)=2/5(r+7) D. 5-2(r+7)=2-5(r+7)

math
Rs 155 is divided into 4 parts in such a way that if the first part is diminished by 4,second be increased by 5,the third be divided by 2 and fourth be multiplied by 3,then find the first part? ans(40)

math
After 20% increase in cost per kg of rice, a family can now buy 4kg less rice in rs240.what was the original price per kg of rice? ans(10rs)

Math
Dedi has a rectangular pool in his backyard. The surface area of the pool in 30m^2 and the width is 5m. There are 4 lights, equally spaced along each of the longer sides of the pool, including a light at each corner. What is the shortest distance between two lights? I tried ...

Math
Two events are independent P(event, then event) What is P(event)? A) a/b (A has a square root symbol) B) a/b (both have a square root symbol) C) a/b (both are squared) D) a/2b

math
a piece of string 25 cm long goes exactly once round the edge of a plate in the form of a quadrant pie = 3.14 Find the radius of this quadrant and calculate the area of the quadrant

math
cost of building a fence around a circular field is rs 7700 at rs 14 per foot.area of circular field??? ans(24062.5) anyone pls help

Math
What is the standard deviation of the following data set rounded to the nearest tenth? 51.8, 53.6, 54.7, 51.9, 49.3 A) 1.9*** B) 3.3 C) 1.8 D) 3.4

Math
How do I figure out what is stronger 5x10 2nd power or 3x10 3rd power. How much are they stronger or weaker.

MATH
WHAT IS THE FORMULA FOR ANGLE OF ELEVATION AND DEPRESSION?

Math
What does ( ) mean

Math
In an exam there were 90 queations each carried 4 marks.For correct 4 marks shall be awarded and for every wrong response 1 marks shall be deducted from the total score .If I attempted the exam and made wrong 14 questions and unattempted 2 What will be my total score provided ...

Math
The dimensions of a rectangular wading pool are shown in the diagram above. Which one of the expressions below represents the maximum volume (in cubic units) of water it can hold? 2 feet high. 3.5 feet across bottom and 5 feet long. Which answer is best 1. 2(3.5)(5). 2. 3.5(2+...

Math Help?
Without graphing, identify the quadrant in which the point (x, y) lies if x < 0 and y < 0. A. II B. IV C. I D. III

Math
The area of a rectangle is 24. The length is 10cm longer than the width. Find the length of the rectangle.

math
Verify: tan^2a=cot^2a-cot^2acsc^2a

Math
Verify: tan^2a=sec^2a tan^2a-1

Math
A student is trying to solve the set of two equations given below: Equation A: x + z = 6 Equation B: 2x + 4z = 1 Which of the following is a possible step used in eliminating the z-term? Multiply equation B by 4. Multiply equation A by 2.*** Multiply equation A by −4.*** ...

math 118
The price of a small cabin is ​\$30,000. The bank requires a​ 5% down payment. The buyer is offered two mortgage​ options: 20-year fixed at 10​% or​ 30-year fixed at 10​%. Calculate the amount of interest paid for each option. How much does the buyer save in ...

Math/Algebra
I need help on a Middle School Math With Pizzaz worksheet. It is titled, Vive la France!

math
Hi, I am in need of some help. How would I find the derivative of the function: f(x) = int e^sin(t) dt if the upper bound is x^2 and the lower bound is cos(x)? I'm not really sure what to do here since e^sin(t) is not an integratable function. Should I instead integrate the ...

Math
Identify al the sets to which the number 3.1214122144...belongs. A.) Rational** B.) Irrational C.) Integer, Rational D.) Whole number, Integer, Rational

Math
Which of these is an irrational number. A. √150 B. √441 C. √200 D. √250 Ok I worked it out like this √150= 12.24 (12) √441= 21.07 (21) √200= 14.14 (14) √250= 15.81 (16) Ok I can't figure this out. What exactly does rational and irrational mean I'm getting so ...

math
solve the equation in substitution method 2m+n=0 m+2n=3

Math
You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes ** experimental; the result is found by repeating an experiment ...

math URGENT HELP!!!
The area of the base of the regular quadrilateral pyramid is 36 cm2 and the area of a lateral face is 48 cm2. Find: Lateral area of the pyramid

Math check?
What is the zero of the function? f(x)=x2−x−6x2−8x+15 Enter your answer in the box. -2

Math
Does the following infinite geometric series diverge or converge? Explain. 1/5 + 1/25 + 1/125 + 1/625 A) It diverges; it has a sum. B) It converges; it has a sum. C) It diverges; it does not have a sum. D) It converges; it does not have a sum. I am pretty sure that it is ...

Math someone plz check
1. How many different lunch combinations can be made from three sandwich choices, two item choices, and four beverage choices if you choose one sandwich, one side, and one beverage? 9 20 24** 2.A bicycle manufacturer offers two styles , three sizes, and five different colors. ...

Math help....
3r=-6cosx I need help converting to rectangular form also:change to polar co-ordinate form 3xy=5

Math Help ASAP
1. How many different lunch combinations can be made from three sandwich choices, two item choices, and four beverage choices if you choose one sandwich, one side, and one beverage? 9 20 24** 2.A bicycle manufacturer offers two styles , three sizes, and five different colors. ...

A national garden club president thinks 70% of its members plant tulips for the spring. Phone calls were made to 100 members. Of the 91 members who responded, 76 said they plant tulips for the spring. What is the sample proportion? Round your answer to the nearest hundredth. ...

Math
126 is the product of 7 and Victor's savings. Use the variable v to represent Victor's savings.

Joel scores in 80% of his games. They are starting the playoffs and if they make it to the state championship, they will have played 5 games. Joel wants to determine the probability that he scores in 4 of the 5 games. Joel sets up his simulation using a table of random digits ...

Math
Does the following infinite geometric series diverge or converge? Explain. 3 + 9 + 27 + 81 + . . . A) It diverges; it does not have a sum. B) It converges; it has a sum.*** C) It diverges; it has a sum. D) It converges; it does not have a sum.

Math
The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School. Two box and whisker plots are shown above a number line. The number line is scaled from 2 to 38 by twos. The first plot ...

Math
The areas of two squares are in the ratio 9:16. The smaller square has sides of length 15cm. Calculate the size of the length of the larger square.

Math
Find the value of the term in the sequence. 7, 2, –3, –8, –13,... A) –27 B) –53 C) –63 D) –58***

Math
Divide (-6m^9 - 6m^8-16m^6) / 2m^3 I get -3m^12 -3m^11 - 8M^9 NOT A CHOICE ON PAPER could it be -3m^9 -3m^8 -8m^6

math
Would you please help/check my answers on these probability questions because I cannot come up with what the answer book says. A group of baseball fans at a sports bar in Illinois were asked about which professional baseball team they root for during baseball season. Use the ...

Math
Ron has 3 times as many stickers as Ted. They have 28 stickers altogether.How many stickers does Ron have.

math
Enrollment at Buchanan Middle School is 524. Sixteen students will be randomly chosen to attend a meeting with a U.S. senator. What are the odds in favor of Tim attending the meeting?

consumer math
The amount that results when \$2,000 is compounded at 8% annually over six years.

Math
If you pay \$950000 for a car and its value depreciates 10% per year how much will be its worth 5 years from now?

math question
The area of an equilateral triangle is decreased to 9/16 of its original amount. How does its new area compare to its original area?

Math
In a middle school computer club, 3/8 of the members are girls. Of the girls in the club, 2/5 are 6 graders. Write and solve an equation to find the fraction of the members of the club that are 6 grade girls

math
MALU EARNS rs5 MORE IN A WEEK THAN IN PRECEEDING WEEK.HE EARNED rs135 IN FIRST WEEK.HOW MUCH WILL HE EARN AT THE END OF 39th WEEK??

math
A CLOCK IS SHOWING THE RIGHT TIME AT 1PM. AFTER THIS IT STARTED GAINING 20 MIN/HR.SO,WHEN THIS CLOCK SHOWS 6PM,WHAT IS ACTUAL TIME?

math
2 cogged wheels, one having 32 cogs and other 54 cogs,work together.if second wheel turns 160 times in three-quaters of a min,how often does the other wheel turn in 8 sec???

math
15L OF 36% Alcohol solution is mixed with 30L of 45% alcohol solution.what is concentration of resultant solution??? (ans 42% how???)

Math
A firm selling type writers knows that four of its 100 type writers will not return properly and that five different ones have a defective key.If none of the other type writers has a defect,what is the probability of a buyer selecting a defective typewriter from this group of ...

Math
Mark has pair of pants in three different colors, blue, black and brown. He has five colored shirts: a white, a red, a yellow, a blue and a mixed-colored shirt. What is the probability that Mark wears a black pair of pants and a red shirt on a given day?

Math
Ronald lee has been told by a company that the probability he will be offered a job in the quality control department is .6 and the probability he will be asked to be foreman of the department, if he offered the job is .1. what is the probability that he will be offered the ...

Math
Working three days per week, a clerk earns \$255 per week. At the same rate of pay , which expression below represents what she would earn if she worked 5 days per week? ( let x represent full time earnings) 1. X= 3/5 (255) 2. X= 5/3(255). 3. X= 3(255). 4. X= 5(255) 5. Not ...

math
seven times the sum of a number and seven is 13 more than the number. what is the number? i know it cant be that hard but please help

Math
You have to answer 3 essay questions for an exam. There are 6 essays to choose from. How many different groups of 3 essays could you possibly choose?

math
Jack pay income tax at the rate of \$35416 plus 45cent for every dollar earned in excess of \$85000. Find her total taxable income if she pays \$39637 in tax.

Math
One bag contains 4 white balls and 3 black balls. If someone draws one ball from the bag and then replaces it and draws another, what is the probability that both will be black? A: 8/12 B: 9/49 C: 1/6 D: 3/7

math
Anna has \$15 more than Lala does. If I gave Lala \$60, she will have three times as much as Anna. Find how much Lala has at the first place?

Math
Four pencils cost \$0.60. How many pencils can you buy for \$0.45?

Active math's
There are the consecutive number. First and third number is 72 .find the middle number.

math
How do you round a decimal to the nearest hundredth? Example: 0.096

algebra
Mrs. Little creates a boxplot for the test scores on her latest math test. She finds that the interquartile range is 20 points. What does this mean?

Math
Gina was training for a marathon. On the first day of her training, she ran 10 yards. On the second day of her training, she ran 10,000 inches. On the last day of her training, she ran 1000 feet. How much did Gina run in all

Math
500 seat auditorium to generate 1,600 in tickets sales. They decide to set the price at \$2 for children. If the ratio of children to adults at museum activities is generally 3:2, what price should be set for adult tickets?

math
Greg's age is 2 years more than 1/3 of steve's age. Molly is 5 years older than Greg. Which equation can be used to find Molly's age, m, based on Greg's age, g, and steve's age, s?

math
andy had 5 1/2 quarts of juice. does he have enough to give a 2/3 cup serving to each of the 32 members of the band? explain

Math
Start at 500. Create a pattern that subtracts 4 from each number. Stop when you have 5 numbers.

Math
What is 7/2 into a proper fraction?

Math
How do I convert improper fractions into proper fractions?

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