# Math

## Recent Questions

**Math (precalculus)**

A rectangle has one corner on the graph of y=f(x)=33-3x^2, another at the origin, a third on the positive y-axis, and the fourth on the positive x-axis. Express the area, A, of the rectangle as a function of x=2

**math**

you spin two spinners, each of which is divided into five congruent sections numbered 1 to 5. list all possible outcomes. then find the probability of getting the same number on both spins

**Math**

kristin bought eight boxes. a week later half of her boxes were destroyed in a fire. there are now only 17 boxes left. with how many did she start?

**Math**

Make a word problem for this equation: 4(w+3)=w-15

**Math Need Immediate Help????**

Find the inverses of each of the functions below algebraically. a.f(x)=3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8

**Math (calculus )**

A company buys an office machine for $5200 on January 1 of a given year. the machine is expected to last for eight years at the end of which time its trade in value or salvage value will be 1100$. if the company figures the decline in value to be the same each year than the ...

**Math**

Impulses in nerve fibers travel at a speed of 293 ft./sec . the distance D traveled in T seconds is given by D =293t . how long would it take an impulse to travel from the brain to the toes of a person who is 6 feet tall? My answer: 6ft=293t 6/293=0.020477 seconds?

**Math**

A company buys an office machine for $5200 on January 1 of a given year. the machine is expected to last for eight years at the end of which time its trade in value or salvage value will be 1100$. if the company figures the decline in value to be the same each year than the ...

**math**

If one gallon of paint covers 350 square feet,will 8 gallons of paint be enough to paint the inside and outside of the fence?

**math**

The five number summary, the sample size, and the largest and smallest data values in the tails of the distribution for a sample of data are given below. Five number summary: left-parenthesis 10 comma 12 comma 15 comma 18 comma 29 right-parenthesis; n equals 200 Tails: 10 ...

**math**

The length is 2 inches and the actual length is 2 miles what is the scale factor?

**math**

What is the scale factor of 120 yds long and 1 in equals 20 yds?

**Math**

In a city baseball league the Tigers are 1/2 games behind the pirates and the Pirates are 4 games ahead of the Cubs. How many games separate the Tigers and the Cubs? 4 behind pirates

**math**

6(m-20)=270

**math**

16 : x :: x : 25 what is the value of x.

**math**

Please show work 6 1/6 ÷ 2 3/10

**math**

how do you solve 57.8 divided by 0.68

**Math**

An explicit solution of a differential equation is: a) a simpler equation b) a real number c) a function on some domain d) an approximation e) a linear relation

**MATH HELP PLS**

Given the following functions f(x) and g(x), solve (f + g)(3) and select the correct answer below: f(x) = 6x + 3 g(x) = x − 7 4 17 25 31 is it b

**Math**

If the base is 15 3/4 and the area is 147 what would the height be?

**Math**

Mary is creating bouquets of flowers using 18 roses,9 lilies, and 21 carnations. She wants each bouquet to be identical with no flowers left over. What is the greatest number of bouquets that Mary can make?

**math**

A CACTUS CASTS A SHADOW THAT IS 14ft 7in long. A gate nearby casts a shadow that is 5 ft long. Estimate the height of the cactus.

**Math**

The cafeteria is serving pie for dessert. Each serving will be 1/8 of a pie. how many servings will they be able to make if they have 7 pies?

**math**

Elaine is making a model of a house that she designed. She wants to put wood molding around two rooms in the model. She measures and finds that she needs feet of molding for one room and feet of molding for the other room. She has feet of molding

**math test PLZ HELP MEH I NEED IT ASAP**

write 0.8,7/8,81%,19/25 in least to greatest

**Math/Algebra**

Farmer Brown drives to town at 36 mph and returns at 48 mph. If his total driving time is 3 and 1/2 hours, how far away is the town?

**math**

at this rate how many trucks would pass Luann if 90 vechicles passed her

**Math**

What is square root of 15 times radical form

**Math**

while training for cross country, Janay ran every day after school Monday through Thursday. Each run was 1.2 miles long. How many feet did she run?

**math**

On the map,1/4 inch stands for 100 miles. Two cities are 3 inches apart on the map.How many apart are they?

**math**

What is 1/3 of 12

**math**

Give the next term in the following sequence: 16, 36, 64, 81, 100, ...

**Math**

The turning point of the function represented by f(x) = x^2 -6x+7 has coordinates (3,-2). Find the coordinates of the turning point of the function defined by g(x)= f(x)+2. explain how you arrived at your answer

**Math**

Find the inverses of each of the functions below algebraically. a.f(x)=3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8

**Math/Algebra**

Farmer Brown drives to town at 36 mph and returns at 48 mph. If his total driving time is 3 and 1/2 hours, how far away is the town?

**Math Please check**

(1/8)17n x 8 I got: 17n/8 x 8= 17n not sure about this??

**Math**

4s-(3-2s)-6=9 Please check my work: 4s-3+2s-6=9 6s-9=9 3s=18 s=3

**math ( factorising by grouping)**

a) am-an-2bn+2bm b) 2ax-6bx+ay-3by c) 2ax-6bx-ay+3by d) a^2b+c^2b-c^2b-a^2b e) a^3+3a^2+2a+6 f) ax-2ay+2bx-4by

**math**

A box contains 150 black pens and 50 red pens. Jose said the sum of the probability that a randomly selected pen will not be black and the probability that the pen will not be red is 1. Explain whether you agree. THANK YOU!!

**math**

The power goes out as Sandra is trying to get dressed. If she has 4 white t-shirts and 10 colored t-shirts in her drawer, is it likely that she will pick a colored t-shirt in the dark? What is the probability she will pick a colored t-shirt? Explain your answer. THANK YOU!

**math (factorising by grouping )**

a) 2ax-6bx+ay-3by b) 2ax-6bx-ay+3by c) a^2b+c^2b-c^2b-a^2b d) a^3+3a^2+2a+6 e) ax-2ay+2bx-4by

**Math**

Trey can drive his car 130 miles on 4 gallons of gas. At this rate, how many miles can he drive on 6 gallons of gas?

**Math**

HOW DO YOU FIND THE AREA OF A POLYGON? COULD YOU PLEASE BE DEATAILED,BECAUSE I DON'T GET IT!!!

**math**

What is 7 1/8×2 5/6 =👍👍👍👍28077;👍

**Math**

Find the inverses of each of the functions below algebraically. p(r)=2r^2+2r−1 3y+5x=18

**math**

Your math test has 38 questions and is worth 200. points. The test consist of multiple choice questions worth 4 points each and open ended questions worth 20 points each. How many of each type of question are there?

**language**

Juan has an essay due in English on Wednesday and a page of math homework due on Friday. How should Juan approach this work? A. Get the math out of the way so he can focus on the essay. B. Split his study time between the courses from now until Wednesday. C. Focus on whichever...

**math**

put these fractions in order least to greatest 3/4,4/5,7/8,and 3/10

**Math, are they all right?**

1. A student raises her grade average from a 75 to a 90. What was the percent of increase in the student’s grade average? Round your answer to the nearest tenth of a percent, if necessary. A: 20% B: 16.7% C: 8.3% D: 15% *** 2. Beanbag chairs that normally sell for $36.50 are...

**Math**

During a sale at a store, you buy 3 sweatshirts and two pairs of sweatpants for 85.50. Later you buy 3 more sweatshirts and 4 more pairs of sweatpants for 123.00. WHat is the sale price of each sweatshirt and each pair of sweatpants? How did you get the answer what formula

**math**

which of the following side lengths could combine to form a triangle?

**Math**

The diameter of a tire is 2.5 ft. What is the circumference of the tire? About how many times will thee tire have to rotate to travel in 1 mile? 5280 ft. A. 5 ft? B. 1,056ft???

**Math**

Bett, Cathy, Isabel, Lani and Ursula run an 800-meter race. Betty beat Cathy by 7 meters. Alma finished 12 meters behind Lani. Bettty finished 5 meters ahead of Ursula but 3 meters behind Lani. Isabel finished halfway between the first and last person. In what order did they ...

**Math**

3 cos (ωt + 2) + 4 sin (ωt + 1) as A cos (ωt + φ) . A = ? φ= ?

**Math**

A student bought 3 boxes of pencils and 2 boxes of pens for $6. He then bought 2 boxes of pencils and 4 boxes of pens for $8. Find the cost of each box of pencils and each box of pens.

**Math help please**

here are 7 pencils and 9 pens in Jack's pencil case. Represent the number of pens to the number of pencils as a ratio.

**Math**

1. Find the next three terms in the sequence. 30, 22, 14, 6, ... -3, -12, -21 -1, -8, -15 -1, -2, 3, -2, -10, -18** 2. Find the next three terms in the sequence. 3, 6, 9, 12, ... 15, 18, 20 ** 15, 19, 20 15, 18, 21 14, 18, 21 3. Find the next three terms in the sequence. -1, 9...

**HELP PLZ MATH**

There are 12 ducks and 15 geese swimming in a pool. What is the ratio to geese to total birds at the pond? A) 12:27 B) 27:12 C) 15:27 D) 27:15 Plz help

**Math**

Which is the best approximation of the volume of a cylinder with a radius of 10 mm, and a height of 5 mm? Use 3.14 for pi.

**math**

What is 34567÷48583829×57383920=

**Math**

Sarah made a square tablecloth and wants to put lace around the edges. The length of one side of the tablecloth is 56 inches. How much lace will Sarah need?

**SO HARD! MATH**

How many nickels would it take to make a stack that's 100 , yes 100 , inches tall! How hard is this?!? AGHHHHHHHH Please help! \(X_X)/ HELPPPPPPPPPPPP MEEEEEEEEEE

**math**

Chalk contains 3 percent carbon 10 percent calcium and oxygen find the amount in grams of each of these substances in 1 kg

**Math Help**

The measure of <3 is 101. Find the measure of <4 A. 79 B. 106 C. 74 D. 101 Not sure on witch one

**Math**

Prepare payroll worksheets (for the week) for three employees. Assume that they worked the following hours at the following rates: - Sam - 6 hours per week at $30/hour - Lisa - on salary with $700/week - Ben - 20 hours per week at $45 hour Please include tax and super and ...

**Math**

A certain system can experience three different types of defects. Let Ai (i = 1,2,3) denote the event that the system has a defect of type i. probabilities are: P(A1) = 0.12 P(A2) = 0.07 P(A3) = 0.05 P(A1 union A2) = 0.13 P(A1 union A3) = 0.14 P(A2 union A3) = 0.10 P(A1 ...

**math**

this is a linear inequalities 4a-3b=5

**Math**

5) Write an equation in point-slope form with the given: (5,-8),(5,8) 8) Write an equation in slope-intercept form for a line that passes through the point (2,-5) and is parallel to y = 11 : )

**math-Polya**

What is the largest rectangular chicken pen (enclosure) that a farmer can construct (fence) if he/she is providing with a wire fencing of 20 metres? The farmer is expected to use only full metres for the sides. 1. Use Polya to solve problem (8) 2. Use three representations(...

**math**

A researcher's garden contains 90 sweet pea plants, which have either white or purple flowers. About 70 of the plants have purple flowers, and about 20 have white flowers. Would you expect that one plant randomly selected from the garden will have purple or white flowers? ...

**Math**

In Super Bowl I, the Green Bay Packers defeated the Kansas City chiefs by a score of 35 to 10. The total points came from 13 different scoring plays, which were a combination of touchdowns, extra point kicks, and field goals, worth 6, 1, and 3 points respectively.The same ...

**math**

A bag contains 8 blue coins and 6 red coins. A coin is removed at random and replaced by three of the other color. a) What is the probability that the removed coin is blue? b) If the coin removed is blue, what is the probability of drawing a red coin after three red coins are ...

**math**

For breakfast, Clarissa can choose from oatmeal, cereal, French toast, or scrambled eggs. She thinks that if she selects a breakfast at random, it is likely that it will be oatmeal. Is she correct? Explain your reasoning.

**Math**

1. Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

**Math**

A 2005 Gallup Poll found that 7% of teenagers suffer from arachnophobia and are extremely afraid of spiders. At a summer camp there are 10 teenagers sleeping in each tent. Assume that these 10 teenagers are independent of each other. a) Calculate the probability that at least ...

**ONE math question! Check please, thank you!**

6) 108 is 36% of what number? Write and solve a proportion to solve the problem. Step 1. First, I will write the proportion to find the missing value, which I will replace it with n. 108/n = 36/100 Step 2. Next, I will write the cross products. So, 36n = 108 x 100 = 10,800 ...

**math**

In my math class tests are 70% and homework is 30% so if i wanted at least an 80% how much would be the least percentage i needed in each category

**Math**

Could you please explain the differences between linear relationships and exponential relationships? How or when would I use either or them? Thank you.

**Math**

In Super Bowl I, the Green Bay Packers defeated the Kansas City chiefs by a score of 35 to 10. The total points came from 13 different scoring plays, which were a combination of touchdowns, extra point kicks, and field goals, worth 6, 1, and 3 points respectively.The same ...

**math**

Two functions, A and B, are described as follows: Function A y = 9x + 4 Function B The rate of change is 3 and the y-intercept is 4. How much more is the rate of change of function A than the rate of change of function B? 2 3 6 9 I believe the answer is either C or B but I am ...

**Math**

Bett, Cathy, Isabel, Lani and Ursua run an 800-meter race. Betty beat Cathy by meters. Alma finished 12 meters behind Lani. Bettty finished 5 meters ahead of Ursula but 3 meters behind Lani. Isabel finished halfway between the first and last person. In what order did they ...

**Can someone help me on math?**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

**math**

In my math class tests are 70% and homework is 30% so if i wanted at least an 80% how much would be the least percentage i needed in each category

**math**

how many 1/3 cup servings are in 3/4 of a cup of tea

**More math**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

**math**

your bill comes to $23.55 at a restaurant. how much money should you leave for a 15% tip for good service? How much money should you leave for a 20% tip for excellent service?

**Elementary Math**

The question stated: Write a numerator that makes the statement true. 1/2< /10 < 4/5 My answer is 7/10 am I correct< If not please explain. Thanks

**Math**

My border is 9 feet long and 1/3 foot wide each tile measures 1/3 foot by 1/3 foot each box of tiles contains 6 tiles how many boxes of tile,do I need show 2 equations to solve the problem

**More math**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

**math**

A 40 foot long escalator rises from the first floor to the second of a shopping mall. The escalator makes a 30 degree angle with the horizontal. How high above the first floor is the second floor?

**Math**

$52 sweater on sale for $31.20 What is the percent of discount or markup ?

**math**

if there are 6 horses are they enough for 16 students

**Math**

I need to design a site plan for a wildlife centre. In order to save money, I must design the plan using the least amount of fencing possible. The plot of land is 80 m wide by 100 m long, and it must be fenced off. Each section for each animal must be fenced off. The building ...

**Math help**

The price of a calculator is $12.50. The sales tax is 7.5%. How much will you pay for the calculator? a. $13.40 b. $13.44 * c. $13.57 d. 13.61 Thank you.

**Math**

There are 40 cows and chickens in a farmyard. One quiet afternoon, Lola counted and found that there were 100 legs in all. How many cows and how many chickens are there? thx...

**math**

There are 16 animals on a farm 3/8 horses, 1/4 are donkeys and the rest are mules. How many horses,donkeys and mules are at the farm

**math**

What number is 73% of 215? (1 point) 215 = 0.73n n = 0.73 × 215 *** 0.73 = n × 215 215 = 73n

**Math - Another question to check, sorry... =/**

7. 72 is what percent of 480? Write and solve an equation to solve the problem. Step 1. First, I will write out the equation. part = percent x whole Step 2. Now, fill in the parts… 72 = p x 480 Step 3. I will simply divide 72 by 480, which will be 0.15. Step 4. The decimal ...

**math**

how do you simplify 10/21

**Math**

Solve the equations below. Check your solutions. 3x-5/2=4x+1/4