# Math

## Recent Questions

math
Suppose x can be expressed as a function of y by x = 5x − 3. a. How can y be expressed as a function of x? b. What is the relationship between the slopes of the two linear equations? c. How do the x-intercepts and y-intercepts of the two equations relate?

math
if m<1=43 degrees what is m<4

A biker traveling at his usual speed can go from his house to work in 4 hours. When the weather is bad, he travels 6 miles per hour slower, and it takes him half an hour more. How far is his work from his house?

Math
Triangle LMN is similar to Triangle XYZ The scale factor of triangle LMN to Triangle XYZ is 2:5 what is the length of the zx

Math
If you flip three fair coins, what is the probability that you'll get a head on the first flip, a tail on the second flip, and another head on the third flip?

Math
A cyclist won a bicycle race for seven consecutive years. His "winning" times and "victory" margins (time difference of the second place finisher) are given in the figure below. -Year------Time--------Margin ----------(h:m:s)------ (m:s) 1999-----91:32:17-----7:38 2000-----92:...

math
integral of ((1+sin(2x))^0.5)/(sin(x)^2) I tried all kind of substitution, simplification but unable to solve it.Need a hint only no solution please.

math
The area of the rectangle with length (x + 9) inches and width 6 inches is more than 72 square inches. Which inequality can be used to find x?

Math
To study the efficiency of its new price-scanning equipment, a local supermarket monitored the amount of time its customers had to wait in line. The frequency distribution in the following table summarizes the findings. Find the standard deviation of the amount of time spent ...

math
How write an equivalent expression to the expression (17*93) / (17*97)

math
p varies directly as the square of q and inversely as r when p=36, q=3 and r=4 calculate q when p=200 and r=2

MAth
ria distributes sweets to three girls one by one . she gives half of the tofees to each girl. if she is left with three tofees in the end ,how manytofees she had in the beginning.

Math
Which governor took the actions below? -Regained accreditation for Georgia's universities -Led the way for 18 year olds to have the right to vote -Established a board of corrections to oversee the prison system Ellis Arnall* Jimmy carter Richard Russell Eugene Talmadge

Math 120
Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 528 and a standard deviation of 135. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score below 123.

Math
Solve each system algebraically Y=4x-9 and y=x-3 This is what I have done 4x-y-9=0 x-3+4x-9=0 3x=9+3 3x=12 X=4 Than I substituted x in one equation y=4-3 y=1 Please let me know if I am doing this correctly. Thx

Math
Jim owns a small business. There was a loss of \$26 on Thursday and a loss of \$11 on Friday. on Saturday, there was a loss of \$9, and on Sunday there was a profit of \$13. Find the total profit or loss for the 4 days. A. \$33 loss B. \$59 profit C. \$19 loss D. \$26 profit (My Answer)

Math
The probability of getting a winning scratch off ticket is 4 out of 10. If Dan buys 25 tickets, how many of those would you expect to be winning tickets?

Math (Integrals) (Basic Integration)
I am given two integrals a and b a) ∫ 1/(1 + x^4) dx b) ∫ x/(1 + x^4) dx The main difference between the two integrals appears to be the "1" and "x" on the numerators. While they both resembles closely to the basic integration of arctan: ∫ du/(a^2 + u^2) = 1/a * arctan(u...

Math
Which expression represents the sum of (2x-5y) and (x+y)

Math
If the electric field in an EM wave in free space has a peak magnitude of 8.7×10−5V/m, what is the peak magnitude of the magnetic field strength? Answer:____T

Math
Suppose you are 94 cm from a plane mirror. Part A What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 4.8 mm ? Answer=_______m^2

Find the value of each factorial expression 4! I don't get it

Math (Integrals)
Find the indefinite integral in two ways. ∫(2x-1)^2 dx The first way I used was using the power rule and chain rule with substitution. Let u = 2x - 1 du = 2 dx (1/2)∫ u^2 du (Applying power rule) (1/2) * (u^3/3) + C =(2x-1)^3/6 + C What would be another way of finding the ...

Math
The scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people taking the test who score between 363 and 541

math
John is about to roll a six-sided, fair number cube 60 times. He wants to predict how many times the cube will land on an even number. He makes a prediction of 20 times. Is it a good prediction? What would your prediction be based on theoretical probability?

Math
There are 50 small balls in a tub. Some balls are white and some are orange. Without being able to see into the tub, each student in a class of 25 is allowed to pick a ball out of the tub at random. The color of the ball is recorded and the ball is put back into the tub. At ...

Math
Allie and Betty want to know how many 3-letter combinations, such as BMW or DDT, are possible. (Letters are allowed to repeat, as in DDT or BOB.) Allie thinks there can be 26+26+26 three-letter combinations, whereas Betty thinks the number is 26*26*26. Which girl, if ether, is...

Math
A shopkeeper has 500kgof potato he sells 45kg potato on each day find how much potatoes was left after the sellers of 8days

math
Find the 10th term in an AP where the first term is 3 and whose 1st, 4th and 13th terms form a GP.

MAth
If you pay \$950,000 for a car and its value depreciates 10% per year. how much will be its worth 5 years from now?

Math - Calc
Sketch the region R bounded by y=x+6, y=x^3, and 2y+x=0 then find its area. I know sketching is kind of difficult here, but I would appreciate any help on how to approach this problem. Thanks

Math
Timothy has 5/8 as many coins as pearly. After pearly gave 1/4 of her coins to timothy, Timothy has 10 coins more than pearly. How many coins did timothy have at first.

Math #3
Which is likely to have a mass close to 3 kilograms? A: a 5-year-old child B: a bowling ball*** C: a lemon D: an adult lion Can someone check this plz

Math
Sally wants to build a fence around her pool. The pool is 26 feet long by 21 feet wide.The fence is to be 15 feet from the edge of the pool. a.What are the outside dimensions of the area surrounding the pool? b. how many feet of fencing will sally need? 41 ft by 36 ft; 77ft 41...

Math
A bean plant was 1.5 meters high one week ago. In 7 days it grew 15 centimeters. Find the current height of the bean plant. A)1.35 m B)13.6 cm C)1.65 m *** D)1.85 cm Can someone check this plz?

Math
Sally wants to build a fence around her pool. The pool is 26 feet long by 21 feet wide.The fence is to be 15 feet from the edge of the pool. a.What are the outside dimensions of the area surrounding the pool? b. how many feet of fencing will sally need? 41 ft by 36 ft; 77ft 41...

Math
cara uses 2/3 of a cup of almonds to make 4 cups of trail mix. how many cups of almonds would she use to make 9 cups of trail mix

1.what is the slant height for the given pyramid to the nearest whole unit. pyramid base= 12 cm height=8 cm A.5 cm B.9 cm ***** C.14 cm D.10 cm What is the length of the diagonal for the given rectangular prism to the nearest whole unit? the unit is the length=6, width=5, ...

Math
A radio program describes a fictional town in which "all the children are above average." In what sense is it possible that all the children are above average? In what sense is it not possible that all the children are above average?

Math
A teacher gives a test to a class of 20 student. Is it possible that 90% of the class scores above average? Give examples of test scores for which this is the case. If not, explain why not?

Math
Evaluate 6C2 6 and 2 are underscored I know that if it was P it would be 6-2 for the first step. What do I do since its C.

math
The figure shown is a rectangle. The green shape in the figure is a square. The blue and white shapes are rectangles, and the area of the blue rectangle is 40 square inches. Enter an expression for the area of the entire figure that includes an exponent. Then find the area. An...

math
Six boys ran a 100m race.Time taken to run the race is 14 seconds. The time in seconds taken by each boy is shown below. Al - 11 seconds Ben 12 Seconds Che - 14 Seconds Don - 12 Seconds Eze - 10 Seconds and Fred - 13 Seconds a) Who won the race b) For which position was two ...

Math
There are 13 2/3 cup servings per bag. How many 1/2 cup servings does that make?

math
Can someone help me and explain what (10P4-) is pls?

Math
Joseph invest R36000 at a simple rate of 6% per year.How much will this amounts to 6 years and 5 months?

math 105
Suppose the scores of students on an exam are normally distributed with a mean of 501 and a standard deviation of 72. Then approximately 99.7% of the exam scores lie between the integers and such that the mean is halfway between these two integers. Use the empirical rule.

Math
A moving company charges \$0.60 per pound for a move from New York to Florida. A family estimates that their belongings weigh about 6 tons. About how much would it cost the family to move from New York to Florida?

Math
Anais bought 4.5 yards of ribbon. She had 3 feet 8 inches of ribbon left after trimming some curtains. How many inches of ribbon did Anais use to trim the curtains?

Math
Which is a compound-complex sentence? A) After the massacre occurred, the government started an investigation, but no one expected to find anything. B) Although it will set you back at least a thousand dollars, a trip to Las Vegas is unforgettable. C) The funeral will be held ...

Math help plz
2. Sarah need to cover the lateral area and the base on top of the cylinder. h=12in r=6in v=? about how many square inches of paper will Sara need? A. 282in 2 is the ratio B. 254in C. 679in D. 565 answers plz for all

Math
Hi I am putting the questions that don't have pictures with the problem from my Measurement Unit Test I need my answers checked because as of now I have a c in math and I want to raise it so I need to make sure my answers are correct! 1. Which solid has 2 bases that are ...

math
For questions 1 and 2, use the integer values of x from -3 and 3 to graph the equation 1. y= -2x^2 +3 (the ^ means an exponent) 2. y= 1/3 |x| -2 Find the horizontal change and the vertical change from the translation P(4, -4) --> (-4, 7)

Pre calc
Please help me proof the identity. This isn't even math to me, I can not understand it so please show all work. God bless A)1-cos2x/sin2x=tanx B) sin4x/sinx=4cosxcos2x

Urgent math help!!
What is the value of sinθ given that (−3,4) is a point on the terminal side of θ ? −3/5 3/5 4/5 <my answer −4/5

math
A deposit of \$10,000 at 9.5% for 90 days = _____.

Math
Johnsons mother bought 25kg of flour.she put the flour equally in 8 small bags.she kept 3 bags and gave the rest to friends.wat is mass of flour she kept?wrote your answer as a mixed number in aimplest form

Math

math
For every 8 squirrels that Travis sees in his backyard, six are dining at the bird feeder. Travis saw 28 squirrels today. About how many were eating birdseed?

math
The graph of the equation 8x–5y=14 passes through a point with an abscissa of 1.2. Find the ordinate of the point. I got .8 repeating but my teacher said that it was wrong. I then got 9.6 and it was also wrong. what am I doing wrong and can you put the answer with the ...

math
write a program in basic to find the H.C.F of two positive integers A and B

MAth
In a set of five consecutive positive even integers, the ratio of the greatest integer to least integer is 2 is to 1. If these integers are arranged from lowest to highest, which is the middle integer in the list?

Math
Suppose k is a continuous function so that k(-2)=3 and k'(-2)= -4 . a. Use the given information to approximate the value of k(-1.4). b. If k''(x)<0 for -3<=x<=0 , will the approximation for k(-1.4) you found in part (a) be greater than or less than the actual value ...

Math
6x10^-5x700 divided by 4x10^5x1.5x10^7 simplify using scientific notation/

math
The sum of the first 5 terms of a GP is 61. If the 5th term is 81 solve the value of the common ratio.

Math
Define a variable and write an expression to represent the following phrase: Seven years younger than Lisa.

Math
A rectangular family room has 204 square feet of floor space. If its length is 17 feet, how many feet wide is it? A. 18 B. 12 C. 17 D. 187 E. Not enough information is given. Answer: 204/17=12

math
Express the radius r of a sphere as a function of the volume V it encloses.

Math
For what value(s) of b, if any, will the function q(x) = (x^4)/2 +b*x^2 +32x-5 have a derivative of zero AND a point of inflection at the same value of x?

Laura is standing 9ft away from a light pole. her shadow is 6ft long. If Laura is 5ft tall, which is closest to the height of the light pole 14.8???

math
Laura is standing 9 ft away from a light pole, Her shadow is 6 ft long. If Laura is 5 ft tall, which is closest to the height of the light pole?

MATH
The work crew for the talent show at the local high school includes these members: 2 freshmen,4sophomores,8juniors,6 seniors.If the sponsor randomly chooses 1 member of the work crew to announce the act & 1 member to control the lighting, what is the probability that he will ...

Math
which equation has (2,-1) as a solution? y=2x-1 y=x+3 y=x-3 y=-2x+1

Math
Is the sum of two integers always greater than the difference between them? Why or why not? Give examples to support your answer.

Math-fractions
A receipt requires 1/2 cup of flour for every batch of cookies. How many full batches of cookies can be made with 5 1/2 flour?

Math
The 24 students in Mr. Brown's homeroom sold 72 magazines subscriptions. The 28 students in Mrs. Garcia's homeroom SortIt 98 magazine subscriptions. Whose homeroom sold more magazine subscriptions per student? Explain your reasoning.

Math
Which of the following is equivalent (-2)-5 A.-2 + (-5) B.-2 + 5 C.2 + (-5) D.2-(-5)

Math; Statistic
At peak periods, 15% of attempted log-ins to an email service fail. Log-ins attempts are independent and each has the same probability of failing. Ann logs in repeatedly until she succeeds. A. find the probability that Ann needs to log in at least four times before she ...

math
Why is -4^2 -16, not 16? To me, -4 * -4 = 16 because a negative times a negative equals a positive. I understand -(4)^2 being negative but not without the parentheses. Thank you.

math
Place grouping symbols in this expression so that the value of the expression is 37.Then justify your answer by simplifying the expression. 8×5-6+12÷6

math
I need to paint 2 walls of 125 feet long (W)x 8 feet tall (Height). how many gallons of paint do I need to buy to cover all the walls?

Math
Simplify the expression 131,000x0.0003 using scientific notation and express the answer in scientific notation.

math
A pipe is cut into twp pieces. One piece has a length of 33 inches. If the other piece has a lenght of u inches, what was the total lenght of the pipe, in inches, before cut?

Math
24. solve the system of equations algerbraically. show all of your steps. (2 points) y=x^(2)+2x y=3x+20 I'm just having trouble understanding. Please help

Math
the thirteenth term of an arythmeticprogression is 27. given that the seventh term equals to three times the second term, find: the first term nd the common difference of the progression

Math
A 24-ounce bag of chips cost \$2.88. If the unit price stays the same, how much would a 40-ounce bag of chips cost?

Math
a model rocket is launched from a roof into a large feild. The path of the rocket can be modeled by the equation y=-0.8x^(2)+12x+25.8 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height in meters of the rocket above the ground...

MAth
Ifa#b=a*b-2*a*b+b*b(-a)*b+b*b then find 4#(-3) *=multiplication

English
1. Write down four friends' names in the name column in the table. 2. You can communicate with others in groups with the five questions on the blackboard. 3. What is her mother asking of her? 4. I'd like you to introduce one of your friends in the table to the classmates. 5. ...

Math
Fred and Jane are brother and sister. Fred is 3years older than twice jane's age. The sum of their ages is less than 36. Taking jane's age To be x years form a inequation. What can you say about jane's age.

Math
A pet shop bought a litter of puppies for \$120. All but four of them were sold, a a profit of \$5 each, for a total of \$120. How many puppies were in the litter.

Math
how do i find the nomial rate? A=500×(1.01^(4t)) is there a formula to find it? confused

Math
3.3x0.006x10 divided by 12x0.005x200 simplify and express in scientific notation.

MATH
Simplify the expression 20,000x0.024 using scientific expression.

Math

math
An atom of gold has a mass of 3.25x10^-22.What is the mass of 8000 atoms?Express in scientific notation.

Math
An atom of gold has a mass of 3.21x10^-22.What is the mass of 8000 atoms?Express in scientific notation.

Math - Calc
If f(x)=∫[1,x^2] t^t dt find f'(x). Another problem similar to this one on my assignment was f(x)=∫[1,x] t^t dt, and the answer was f'(x)=x^x. That same pattern would say this answer should be (x^2)^(x^2), but that's not being accepted. What am I missing here? Please help

Math
The results of a certain medical test are normally distributed with a mean of 130 and a standard deviation of 12. ​(A reading above 149 is considered​ unhealthy.) Use the given table to find the percentage of people with readings above 141.

Math
when only tom was absent 19 students in his class took a math test and their average score was 82%.when tom came back to school he took the test and got a 72% .what happened to the class average