# Math

## Recent Questions

**math**

if the probability that an event E occurs is 1/p+1, then find the probability that E does not occur in terms of a simple fraction

**math**

The ratio of male fish to female fish in a aquarium is 21:20. If there are 123 fish how many are male?

**math**

solve y=0.04x^2+8.3x+4.3

**math**

Cashew nuts are sold at $15.00/kg. Walnuts are sold at $12.00/kg. What quantities of each nut would a store owner put into a 100-kg barrel so that it could be sold for $13.20/kg? ---------------- 15.00c+12.00w= 31.20 C+w= 100 Are these equations right?

**Math, Inequalities**

Prove the following inequalities. Then state for which values the LHS equals RHS. 1) a^2 + b^2 ≥ 2(a-b-1) 2) Given a + b = 1, prove the inequality a^2 + b^2 ≥ 1/2 Please explain how you solved it. Thanks.

**Math**

The list below gives the number of patrons per day over a 30-day period during July at a theatre. 127 126 125 132 128 122 156 172 183 171 160 140 154 160 122 187 185 158 112 145 168 187 117 120 171 171 156 163 168 162 a) Find the mean and standard deviation of these data. b) ...

**math**

Which function grows the fastest for large values of x? f(x)=1.5x f(x)=8x f(x)=3x f(x)=4x2+3

**math**

Jimmy began deriving the quadratic formula as shown. ax² +bx +c = 0 x² +b/ax+c/a=0 x² +b/ax=−c/a x² +b/ax+(b/2a)² =−c/a+(b/2a)² What should Jimmy do next? Subtract x² from each side. Factor the trinomial. Add x² to each side. Subtract b2a from each side.

**Math**

The pedals of a bicycle are mounted on a bracket whose centre is 29.0 cm above the ground. Each pedal is 16.5 the bracket The bicycle is pedalled at the rate of 12 cycles per minute. a) Write an equation for the height of one pedal at time t, in seconds, if this dal starts at ...

**math**

Thomas is thinking of a number, if he doubles his number and subtracts 27, he gets 407. Whats his number?

**math**

The volume of two similar rectangular prisms are 64cm^3 and 1000cm^3. The surface area of the smaller figure is 112cm^2. What is the surface area in square centimeters of the

**Math**

One lap around a track is one-eighth of a mile. A horse ran a distance of 11 laps in 3 minutes and 30 seconds. What was the horse's average speed in miles per minute?

**math**

Kevin had $15 with him. His mother gave him $10 and his father also gave him some money. After this, he had a total of $37 with him. How much money did his father give him? Write an equation with a variable and state what the variable represents.

**math**

how many feet of wallpaper border are needed to go around the walls of a rectangular room that measures 3 1/2 yd by 4 yd

**math**

how many feet of wallpaper border are needed to go around the walls of a rectangular room that measures 3 1/2 yd by 4 yd?

**math**

As part of a school science project, Jacob bought some bulbs for a total of $18. The cost of each bulb was $3. How many bulbs did Jacob buy? Write an equation with a variable and state what the variable represents.

**math**

Alana picked p peaches. Michelle picked 18 times as many peaches as Alana. Write an expression that shows how many peaches Michelle picked.

**math**

The table shows the drink preferences of 50 shoppers at the mall. What is the probability that one shopper, selected at random from the 50 surveyed, preferred either Drink B or Drink A? 8/25 3/10 11/25 7/25***

**math**

The table shows the drink preferences of 50 shoppers at the mall. What is the probability that one shopper, selected at random from the 50 surveyed, preferred either Drink B or Drink A?

**math-precalculus**

sin(6x)cos(11x)+cos(6x)sin(11x)=-0.1 solve for all solutions and provide steps so I can follow.. thank you

**math-precalculus**

tan^3(θ)=3tan(θ) solve for all solutions.. please provide steps so I can follow

**Math**

Consider Mr. Smith has an apple orchard. He hires his daughter, Lucy, to pick apples and offers her two payment options: Option A: $1.50 per bushel of apples picked Option B: 1¢ cent for picking one bushel, 3¢ cents for picking two bushels, 9¢ cents for picking three ...

**Math help Ms,Sue Please!!!**

Note: Your teacher will grade your responses to questions 18 and 19 to ensure that you receive proper credit for your answers. 18. You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to poll only those students...

**math**

A man travels 12km due north, then 5km due east and then back to the starting point on a straight road. What is the total distance traveled?

**math**

Complete the indirect proof. Given: Rectangle JKLM has an area of 36 square centimeters. Side is at least 4 centimeters long. Prove: KL ≤ 9 centimeters Assume that a. ____. Then the area of rectangle JKLM is greater than b. _____ , which contradicts the given information ...

**math**

A horse worth $900 is sold by A to B at 10% loss and B sells the horse back to A at 10% profit, then the result is--- A.A loss $9 B.B loss $9 C.neither loss nor gain D.none The answer in the book in the answer key is (a) but I keep getting 171 as the loss of A. Some of my ...

**math**

The equation $y = -6t^2 + 43t$ describes the height (in feet) of a projectile $t$ seconds after it is launched from the surface of Mars at 43 feet per second. In how many seconds will the projectile first reach 77 feet in height? Express your answer as a decimal rounded to the...

**math**

if i were to ask all my classmates their favorite color, what type of data im i collecting?

**Math**

If John has p hours of homework and has worked for r hours, what part of his homework is yetc to be done? Solution:(p-r)/p or1-r/p am I correct?

**Math**

If a man's weekly salary is x and he saves y dollars, what part of his weekly salary does he spend?

**Math**

When 300 pupils are in a lecture hall,only 2/3 of the seats are occupied. How many seats are there?

**Math**

One day at ABC high school, 1/12 of the students were absent,and 1/5 of those present went on field trip.if the number of the students staying in school that day was 704,h0w many students are enrolled at ABC high?

**Math for IT**

There are 2000 students in a course. They wrote a mathematics test which was scored out of 40 and then converted to percentage. 1. Draw a flowchart that reads the name, sex and score of each student, and outputs the names of the female students that scored below 45% and how ...

**Math**

The average noon temperature in Sydney in january is 32 degree c .the average midnight temperature in bostone in January is -12 degree c.what is the temperature difference between two cities?

**Math**

An automobile dealership uses CODE = 1 for new automobiles, CODE = 2 for used automobiles, and CODE = 3 for separate accessories. A salesman’s commissions are as follows: on new automobile, 3% of the selling price but a maximum of $300; on used automobile, 5% of the selling ...

**Math**

Lily was born in 100Bc and was 56 years old when she died .in what year did she die?

**Math**

Sana was born in 20 Bc and died in AD 42 (or CE).how old was she when she died?

**Math**

Highest temperature was 58degree c and lowest temperature was -88 degree c.what is the temperature deference?

**math**

Task 2 (6 points) Suppose you’re having a birthday party at the local bowling alley. 1. You’re trying to figure out how many people you can afford to invite. The number of guests you can invite to your party varies inversely with the price per bowler at the alley. Explain ...

**Math**

A biology class has 12 boys and 18 girls .what fraction of the class are boys? Solution. 12/30=2/5 Please tell me this correct or not.

**Math**

Explain how can tell without computing whether the quotient 1/2 divided by 6 is greater than 1 or less than 1 I think it is greater becwuse the number i start with

**Math & science**

If a car slows down from 15m/s to rest in 5 seconds calculate retardation

**math**

Tucker bought 2 bags of beans. There are b beans in each bag. Write an expression that shows how many beans Tucker bought.

**math c**

A farmer planted cabbages in rows. Each row had 36 cabbages planted at regular intervals of 0.5m.what is the length of each row?

**math**

how many books each 1.5cm thick can be kept in a shelf 1.45m high

**Math 4th grade**

I need help on how to work this problem out. I need step by step please. This is the word problem: On Monday, I rode 9 miles. On Sunday, I rode 4 fewer days than on Monday. On Tuesday I rode 2 times farther than Sunday. How far did I ride on those 3 days?

**Math, identities and equalities**

Determine the value of a, b, and c so the following equalities become true for any value of x. x^3 - 6x^2 + 15x - 7 =(x+a)^3 + bx + c If possible, could you please show how you solved it.

**Math**

The pressure, P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new pressure be? a) 6 Pa b) ...

**math**

A bag containing 75 sweet was shared between mark and jhon John received 15 more sweet than mark what is the ratio that the sweets were share in

**Math**

Which is better a truck delivery of soil or doing it yourself. Area to cover is 3500 SQ FEET with a 4 inch layer of topsoil or .33 =1156 cubic yards Your truck bed Volume of truck 80/36=2.22*69/36=1.92*20/36=.555=2.34 cubic feet 1156 cubic feet / 2.34 cubic feet= 494.01 or 494...

**Math**

What is 15 percent of 60

**Math**

If a projectile is fixed at an angle α = 60° and initial velocity, Vi =100 ft/s. Find its position at the end of 25 seconds. x = (Vi cos α)t y = -16t² + (Vi sin α)t

**Math**

Thinking of two whole numbers. The product of the two numbers is 28. Their difference is 3. What are the numbers?

**Math**

Mr. Smith wants to save for his son's college education. If he deposits $400 each month at 3% compounded monthly, how much will he have in the account after 48 months?

**math**

a sum of money is shared between peter and john in a ration 3:5. john got $9. what was the total amount shared. 5/8=9 8/5×9=14.4

**6th grade Math**

If x = 2.5, 5x = ____. (Only input decimals such as 12.7 as the answer.) Answer for Blank 1:

**6th grade Math**

Zoya asked the students of her class their baseball scores and recorded the scores in the table shown below: Baseball Scores Score Number of Students 0 1 1 2 2 5 3 3 4 6 5 7 6 9 Based on the table, what is the mean baseball score? 2.5 2.9 3.5****** 4.1

**math**

Find, in term of pie , the curved surface area of a with circular base diameter 10cm and height 12cm

**math**

If the cone in question 22 is made of paper, and the paper is flattened out into the sector of a circle , what is the angle of the sector

**Math**

Olivia is growing roses and keeps track of how much fertilizer (in ounces) she adds to the soil and how many blooms each rose bush has. She finds a linear relationship that can be modeled by the equation y = 1.345x + 4. When will Olivia only have 4 blooms?

**equations math 7a**

Smallside Farms sells Delicious and Empire apples. One August they sold 162 more Empire than Delicious apples. The total number of apples sold was 424. Which equation could be used to solve for n, the number of Delicious apples sold? a)2n+162=424 b)2n-162=424 c)n+162=424 d)n-...

**Someone please help!!! Math**

Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100°-Many b)A right triangle with three congruent sides-one c)A scalene triangle with side lengths of 7 cm, 3 cm, and 9 cm-none

**Math (Calculus II) (Volume Revolution Setup)**

Take the area enclosed by the curves y = sqrt(x), y = 1, and x = 4. Rotate it around the line x = 5. Find the volume. While I understand the general problem would call for the shell method ∫[a,b] 2*pi*r*h dx With r = 5 - x and h = sqrt(x) - 1 But, what happens say if the ...

**math**

Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100° b)A right triangle with three congruent sides c)A scalene triangle with side lengths of 7 cm, 3 cm, and 9 cm

**Math**

An automobile dealership uses CODE = 1 for new automobiles, CODE = 2 for used automobiles, and CODE = 3 for separate accessories. A salesman’s commissions are as follows: on new automobile, 3% of the selling price but a maximum of $300; on used automobile, 5% of the selling ...

**Math**

The amount of money Tom has is 75% of Sally's amount of money after Sally spent $120 and Tom saved all of his money Tom's amount is 50% more than Sally's. how much money did each of them have at the beginning?

**Math**

In a school 4/11 of the students are girls.if there are 490 boys, find the number of girls.

**Math**

Express the recurring decimal into fraction. a)0.02469999999... b)123.76111111... c)542.8888888... d)789.456456456...

**Math**

Solve for x under the assumption that x>0. Enter your answer in interval notion using grouping symbols. X-48/x<-8

**math-precalculus**

help me please.. and please provide steps so I can follow. sec(2ϴ)=3... solve for all solutions on [0,2π]

**Math**

What is the formula for the square root of a triangle?

**Math**

Which is better a truck delivery of soil or doing it yourself. The yard is about 6400 sq ft What kind of pickup truck does he drive? A 2003 Ford F-150 XL. How much can the pickup carry? The truck bed is 80 inches long, 69 inches wide, and 20 inches tall. How much is the ...

**Math**

If I had five pies and my friends are 3and I made20 more how many pies what I have left after you add two more

**Math**

I need help solving these problems y=-0.4x^2+8.3x+4.3 I got 0.52 h=-16t^2+149t+30 I got 640.5 feet after 4.63 seconds 0=x^2+3x-10 I got x=5, -2 (2x-4)(2x-1)=0 I got -2, 1/2 x^2+8x=10 I got -1.1, 9.1 HELP PLEASE

**Math**

A square matrix A= (5 4 2 3 1 3 -2 -1) Determine the determinant of A(detA) Determine the inverse of A (A-1)

**Math**

A square matrix A={1 3 -1 -3 -5 8 1 8 9}.Is A skew-symmetric?

**Math**

Four more than the opposite of n equals 6 How u write it as an equation?

**Math**

Twice n,less three,equals 5 How do you write it as an equation?

**math**

The ticket prices for a movie are shown in the illustration. Receipts for one showing were $1,930 for an audience of 205 people. How many general admission tickets and how many senior citizen tickets were sold?

**Math check answers PLZZ**

1) Based on a survey, 3 out of 10 students like to play the flute. For a class of 700, how many flutes should the teacher pre-order? (1 point) 70 flutes 210 flutes*** 300 flutes 490 flutes 2) The probability of getting a winning scratch off ticket is 4 out of 10. If Dan buys ...

**Math**

The original price for a pair of sneakers was $70. John bought them on sale for 25% off. The sales tax was 6%. How much did John pay for the sneakers, including sales tax? A $16.80 B $18.55 C $52.50 D $55.65

**Math**

What is the area of a triangle 4.5,4, and 3.

**Math**

Find the area of composite polygon shown below top 110cm. Angel side 50cm. Bottom 180cm. Side 140cm

**math**

the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices. 4x+y=1 2x-y=5 3y+3x=12 show work.

**math**

the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices. 4x+y=1 2x-y=5 3y+3x=12

**math**

You play racquetball at a community club. You have two options for paying for court time. Option A: You pay $12 for court time each time you play. Option B: You buy a club membership for $120 and then pay $2 each time you play. a. Write and solve a linear system to determine ...

**Math**

Could someone help? Its on connections math test unit 6 lesson 7 14x2+4+3x-12x2-3+11x

**Math**

A drawer contains 2 red socks, 3 white socks, 3 blue socks. Without looking , you draw out a sock, then return it, and draw a second sock. What is the probability that the first sock is blue and the second is red? 3/8, 2/5, 29/32, 3/32

**Math**

The lock is numbered from 0 to 49. Each combination uses three numbers in a right, left, right pattern. Find the total number of possible combinations for the lock.

**Math**

n 5 x 3 - 15, 30, 45, 60 - 5, 15, 45, 135 - 0, 15, 45, 135 ** - 15, 45, 135, 405 Im just super confused about this question, i dont understant it, can someone explain it to me?

**Math**

At Franklin School 3/8 of the students take a bus to school, 3/5 walk and the rest bike. There are 20 students who bike to school. How many students are in the school?

**Math**

Show that sin (α-30°)+cos (α+30°) = (√3 - √1)/√2 × sin (α+45°)

**Math**

A group of 8 people spent $78 to go to the movies. Adult tickets cost $10 each and student tickets cost $8 each. How many adult tickets were purchased.

**Math (Probability)**

A survey showed that 30% of students choose blue as their favorite color; 40% chose pink; and the other 30% chose green. If you survey 30 students from the same group, how many do you think will choose pink? 25 20 150 12 ***

**Math (Probability)**

A standard number cube with the numbers 1 through 6 is rolled. Find the Probability of rolling a number greater than 5. 1/6 *** 1/3 1/4 2/3 Thanks In Advance! <3

**Math >:( Help please!!!**

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

**math**

A boat travels from one port A to port B, travelling 126 km, upstream (against the current) at a uniform speed, and the trip takes 6 hours. On the way back (downstream), the trip only takes 4.5 hours. Set up and solve a system of equations to find out the speed of the boat ...

**Math**

A bus travels 180 miles in same time a car travels 240 miles. if cars speed is 15mph faster than speed of bus, find the speed of car and bus.

**math**

please check this. 1. What is a reasonable distance between two cities? A.200 km* B.200 m C.200 cm D.200 mm 2. 6,501.5 km = ? m = 6,501,500 m. 3.Find the perimeter of the rectangle with length 97 inches and width 17 inches.228 in.* 211 in. 1,649 in. 114 in. 4. Each pail of ...

**math**

Length is 6 feet and breath is 5 feet and height is 5 feet find the volume of the water filled in the tank