# Math

## Branches of Math

## Recent Math Questions

**Math**

Jamie used a microscope to measure the diameter of a hair. She found that the diameter of the hair was 0.000072 meter. How is this number written in scientific notation? I know the answer is 7.2 times 10 exponent -5 but can someone tell me the steps please?

**Math**

The speed of light is 3x10^8 m/s. If the sun is 1.5 x10^11 meters from the earth, how many seconds does it take light to reach the earth?

**Math**

Talor is building a birdhouse for his backyard. He needs a piece fo wood that is 8 inches long and 6 inches wide. What is the area of the piece of wood tayler needs

**Math**

a shark jumps out the water. Yhe function f(x)=-16x^2+21x models the shark's height, in feet, above the water after x seconds. How longis teh shark out of the water

**Math - Calculus**

You are given 1200 cm^2 of cardboard to make a box with a square base and an open top. Find the largest possible volume of the box.

**math**

A rectangle has a length of 9inches and a height of 1.5 feet. What is the area of the rectangle in square feet?

**math**

hi I reposted this question to see if I would get the answer the person who posted this one last time says that 9sqrt3 is wrong (and I check if they were right) do here is the question again Given: ∆PQR, m∠R = 90° m∠PQR = 75° M ∈ PR (meaning that m in on segment PR...

**Math PLEASE HELP!**

1.Suppose that the function f(x) = 7x + 2 represents the number of cars that drive by in x minutes. How many cars will drive by in 10 minutes? a. 27 b. 70** c. 72 d. 90 2. Buses on your route runs every 11 minutes from 7:00am to 11:00am. You arrive at the bus stop at 8:18am. ...

**Math**

Solve without the use of a calculator: sin20(tan10+cot10) I know it should equal two but I don't know how to get there

**math**

Zeb is going to deposit $3370 into an account that earns 14% APR compounded annually for 37 weeks. What is the "n" in the compound interest formula? n= What is the "t" in the compound interest formula? Enter as a fraction. years What is the "nt" in the compound interest ...

**Math**

Mark put $3290 into a bank that offered 3% interest rate compounded monthly. Mark kept the money in this account for 9 years and then moved all this money to a new account that offered 6% interest rate compounded weekly. Do not round any numbers until you get to an answer. How...

**Math(PLEASE HELP ME ASAP)**

5/100 = 30/x solve for x

**math**

the circumference of the circle 12.5m. what is the area of the shaded region

**math**

jennifers pool is 8m deep and has a radius of 5m. the pool is half full....How many ml of water is in the pool.

**Math**

If a small airplane flew 490 miles to San Antonio, Texas and the flight took 2 hours and 48 minutes, what Was the rate at which the jet Was flying

**Math**

Gina ate 1/6 of an apple pie.Greg ate 1/2 of the same pie.How much of the apple pie was left?

**math**

calculate the first ten term of an Arithmetic progression whose 5th term is 24 and the difference the 7th and 10th term is 15

**Math**

a box contains red markers ,blue markers amd green markers . there are more blue makers than red .the probability of randomly selecting a blue marker from the box is 1/5 . that is a possible probability that a randomly selected marker from he box is red?

**Math - Rate Of Change**

What does it take to win a tug of war? PUNCHLINE • Algebra • Book A 2006 March Mathworks

**Math**

Marissa pours one and a half cups of punch in each class how many fluid ounces each serving

**4th grade math**

Aidan mixes 630 milliliters of blue paint w/2 liters of red paint to make purple paint. How many milliliters of purple paint does Aidan have?

**Math**

If a baseball and bat cost $110, and the bat costs $100 more than the ball, how much does the ball cost? I don't get it i say it's 10 but its not its 5 YYYYYYYYY

**math**

how do you write 700,000,000+2,000,000+80,000+90 in standard form

**math**

find the area of a triangle i dont have a pic so ill just tell you the measurements 5.5m, 6.9m, 4.9m choices: a. 16.5m2 b.11.55m2 c.23.1m2*** d.4.85m2 is my answer correct if not please explain how to do it

**Math**

A girl starts to walk to her school, which is 20 miles away, at 6:50 and at a rate of 3 miles per hour. After a while, her dad picks her up and drives her through the remainder of the way at 30 miles per hour. If they arrived at school at 9:00, how far did she walk?

**Math**

Find the equation for the tangent line to the curve at the point defined by the given value of t.also find d²y/dx² at this point x=SECt, y=TANt,where t=π/4.

**Math**

Solve: - (square root) x^2

**Math**

Have you ever been on an airplane and heard the pilot say that the plane would be a little late because it would be flying into a strong headwind or that even though the plane was taking off a bit late, you would be making up time because you would be flying with a tailwind? ...

**Math**

If you are flying to a city 400 miles away, what will be the difference in flight times between flying into a 40-mph headwind and flying with a 40-mph tailwind if the plane's maximum speed with no wind is 160 mph?

**math**

find the missing dimension of a rectangle prism with the volumn of 120 cubic feet a width of 4 feet and the length of 4 feet

**Math**

Find the equation for the tangent line to the curve at the point defined by the given value of t.also find d²y/dx² at this point x=SECt, y=TANt,where t=π/4.

**math**

You invested money into two funds. Last year,the first fund paid a dividend of 8% and the second a dividend of 5%, and you received a total of $1330. This year, the first fund paid a 12% dividend and the second only 2% and you received a total of $1500. How much did you invest...

**Math**

1.-5+3=__ a.-8** B.-3 c. 2 d. 8 2. Select the word that best completes the statement The sum of two integers is ____ Postive a. Always B. sometimes** c. never 3. 16 +(-9)= a. 7 b. -7** c. 25 d.-25 4. -14+(-18)= a. -4 b. 4 c. 32** d. -32 NEED FEEDBACK ASAP

**Math**

Which of the following equivalences is true? x^2 ≥ 0 ⇔ (x+1)^2 ≥ 1 x^2 ≥ 0 ⇔ x^2+1 ≥ 1 x > 0 ⇔ x^2 > 0 x^2 > 0 ⇔ x^2+1 ≥ 1 x ≥ 0 ⇔ x^2 ≥ 0

**Math**

Find the area of the circle.Use 22/7 as pi. this is 6th grade work sorry i have been stuck for an hole hour

**math real and complex numbers lesson**

(7,-9)+(3,5)

**math**

I am looking at following question: Anna is 1.8m tall and her pet flea is 1.8mm tall. How many times is Anna taller than her pet flea? the answer of the book is 1.8x1000/1.8=1000 but I am afraid that it is not correct. it should be that Anna is 1000 times as tall as her pet ...

**math**

the difference between two fractions is 1/10. the smaller fraction is 4/7. what is the sum of the two fractions?

**Math**

I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22, l=24, m=26, n=28, o=...

**Math**

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 75 miles per hour. The westbound train travels at 65 miles per hour. How long will it take for the two trains to be 196 miles apart?

**Math**

You can register a pickup truck as a passenger vehicle if the truck is not used for commercial purposes and the weight of the truck with its contents does not exceed 8500 pounds. Your pickup truck weighs 4200 pounds. Write an inequality to represent the numer of pounds your ...

**Math**

If you have 2 balls in your mouth, and 3 men come in. How much balls do you have in your mouth?

**Math**

By picking a natural number randomly up to 100 find the probability of the number being a perfect cube

**Math**

segment jk has coordinates j(3 -6) and k(-3 2) when segment jk is dilated with a scale factor -4, what are the coordinates of J' and K'? J'(7,-2) and K'(1,6) J'(-12,24) and K'(12,-8) <--? or D J'(-1,-10) and K'(12,-8) J'(-3/4,3/2) and K'(3/4,-1/2)

**Math**

All 500 students at Robinson Junior High were surveyed to find their favorite sport. How many more students played football than basketball? Soccer has 10% Basketball has 27% Baseball has 25% Football has 38% A.325 students B. 135 students C. 190 students D. 55 students Im ...

**Math**

Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the roof. The tank is to ...

**MAth**

Mr.jerkins wants to distribute 40 filters he has 30 filters what is the percent of the title number of filters?

**math**

A car today costs $32000. Assume that the average annual rate of growth per year was 5.83% over the last 45 years to answer the following question. Round all answers to the nearest whole dollar. How much would the same value of car have cost 45 years ago in 1969? $ 1969's ...

**Math**

A bank advertises a savings account that earns 3% APR compounded daily. What is the "n" become for the compound interest formula? What is the APY rate for this loan? Round answer to nearest 100th

**Math**

A 25 ft. Ladder is placed 8 ft. From the base of the house. How high up the side of the house can the ladder reach?

**Math -- Calculus**

Some years from now you are working for a book publisher. Your boss asks you to give him a formula that will tell him the length and width of a book page that contains A square inches of printed text, a left margin of L inches, a right margin of R inches, a top margin of T ...

**Math**

if you have a f in math what is the percent of the grade in math?

**Math**

What number makes the sentence below true and how do you come to the answer (3 +____)+4 =3+(6+4)

**Math**

Amanda increase the amount of protein she eats every day from 48 g to 54 g. By what percentage did amanda increase the amount of protein she eats?

**Math**

The results of a survey are shown. In the survey, 28 students said their favorite dessert is ice cream. a. How many students were surveyed? b. How many students said their favorite dessert is pie? Favorite Dessert Pie: 15% Candy: 23% Cake: 27% Ice Cream: 35% *show your work so...

**Math!**

John invests $2,975 at 4% interest compounded annually. What will be the balance in the account after 2.5 years? • $3,272.50**** • $3,281.48 • $5,493.86 • $7,735.00 Am I Correct?

**math**

3 fourth of a class are boys. The girls are 24 less than the boys. How many pupils are in the class?

**Math!**

John invests $2,975 at 4% interest compounded annually. What will be the balance in the account after 2.5 years? • $3,272.50 • $3,281.48 • $5,493.86 • $7,735.00*** Am I Right?

**Math**

A fence 3 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

**math Lsson:11 unit 3**

1. estimate the circumference of the circle. use 3.14 as pi . round the nearest unit. The circle says 24. A. 27 b. 79 c.1,809 d. 151**** 2. Estimate the radius of a circle with the circumference of 272.2 inches. Use 3.14 for pi. Round to the nearest tenth. a. 43.3 b. 136.1 c. ...

**math**

x + 70 d + 70 d = 180 d what is x help me im lost

**Math Check!**

John invests $2,975 at 4% interest compounded annually. What will be the balance in the account after 2.5 years? • $3,272.50**** • $3,281.48 • $5,493.86 • $7,735.00

**math**

Note: For questions 20 and 21, your teacher will grade your responses to ensure you receive proper credit for your answer. 20. Complete the table. a) 5 6 7 8 9 b) 3.8 4.6 5.4 ? ?

**Math**

90 degrees - 52 degrees = ? 180 degrees- 52 degrees = ?

**Math(PLEASE HELP ME ASAP)**

what is the best way to classify a 115 degree triangle i already know its a obtuse and a scalene but i would i explain how i got this answer??? Plzz Help Me

**MATH**

the length of a piece of lumber is 6.5 meters. how many centimeters is this? A).65cm B)65cm(I pick this answer) C)650cm D)6,500cm

**Math**

Hi I did a quiz today it said I got A 5/9 but it did not show me the correct answers or the ones i missed so if it could be possible that someone could the answers so I could see which ones I need to fix please help me I just came here to see which ones are correct also I'm ...

**Math (higher level) 2nd year**

A rectangular lawn is surrounded on three sides by flower beds. Each flowerbed is 2m wide. The area of the lawn is 14m(squared). What is the length of the lawn? <---------------- 3x----------------------> ____________________________ |. | /|\ | 2m _____________________...

**Math**

You are planning a dinner for 174 people. The tables at the restaurant are large enough to seat 4 people at each one. How many tables will need to be reserved?

**math please help**

can apple weighs 350 grams a pear weighs .04 kilograms.which of the following statement are true

**Math Ms.Sue Help**

Which data value has the highest frequency? A) 1/16 B) 3/16 C) 3/8 D) 5/8 A number line with four x's above one sixteenth, one x above three sixteenths, one x above three eighths, two x's above one half, two x's above five eighth, and one x above three fourths. I think the ...

**Math**

By picking natural numbers randomly upto 100.Find the probability of number being a perfect cube?

**MATH**

How many lines of symmetry does a square have? A)0 B)2(I pick this answer) C)4 D)6 Please help me

**math**

a bus ride costs $1.50. A 30-day bus pass costs $36. Write an equation to represent the number of bus rides you would need to take for the bus pass to a better deal.

**Math**

a baseball field has four bases that form the shape of a quadrilateral. If someone invented a new game similar to baseball that had an extra base in the field, what type of polygon would the bases form? A. pentagon<My Answer B. octagon C. decagon D. hexagon

**math**

A net has two equilateral triangles and 3 rectangles. what solid figure might it make a square pyramid a triangular prism a rectangular prism a triangular pyramid

**math**

A parabola f intersect the x- axis at B and C and the y-axis at E.The axis of symmetry of the parabola has equation x=3.The line through E and C has equation g(x)=x/2-7/2. Calculate the x coordinate of B

**math**

represent root5 and -root5 on number line

**math**

Given suitable examples of sets A,B,C,show that: A∩B=A∩C, B≠C A∪B=A∪C, B≠C

**math**

Given suitable examples of sets A,B,C,show that: A∩B=A∩C, B≠C A∪B=A∪C, B≠C

**math**

twice a number decreased by 10 is equal to 60

**Math**

lim root (4x^2+2)/5x+3 X➡∞

**chemistry**

If you need to prepare 250.0 mL of a pH 5.00 buffer tha t has a total buffer concentration of acetic acid + sodium acetate of 0.050 M, how many moles of each will you need to prepare the solution? Given solutions of acetic acid and sodium acetate with concentrations of 0.10 M ...

**math**

In an isoceles triangle top vertex is twice the of the sum of the base angle.find all the exterior angles of the triangle?

**Math**

The Cougars won 62% of their games. They won 93 games. How many games did they lose? I'm not exactly sure how to approach this I tried to divide 93 by .62 but that didn't quite exactly work out and I'm not sure how to find the whole with only different ways of putting the ...

**Math**

carnival m charges an entree of $5.00 and $0.65 per tickets for the ride carnival p charges an entree fee of $10.00 and $0.45 per tickets for the ride. How many tickets must be purchased in order for the total cost at carnival m and carnival p to be the same? i know the answer...

**Math 3rd grade**

List fractions in order from largest to smallest, 1/3,1/6,1/2

**Math**

A swimming pool holds 27460L of water. How long will it take to fill the pool at a rate of 50L/min?

**Math**

Brian buys a package of one-inch square tiles. He wants to make a mosaic picture 5 inches long and 4 inches wide. Does he have enough tiles? If so, how many more will be left over?

**Math**

How many square inches of crust would it take to cover the bottom of a pie dish with a 15 inch diameter

**math**

On the 1st of January 2014, Carol invested some money in a bank account. The account pays 2.5% compound interest per year. On the 1st of January 2015, Carol withdrew £1000 from the account. On the 1st of January 2016, she had £23 517.60 in the account. Work out how ...

**Math**

Help me , what is y if y=2x+10

**Math**

The formula C = 2 x Pi x r is used to calculate the circumference of a circle when given the radius. What is the formula for calculating the radius when given the circumference? C/2Pi = R*** C/2R = Pi 2 x Pi x C = R 2 x Pi/ C = R

**Math**

an 8% solution, a 10% solution, and a 20% solution of sulfuric acid are to be mixed to get 100 milliliters of a 12% solution. How many milliliters of each must be mixed if the volume of the 20% solution must be 25 milliliters less than the volume of the 10% solution

**math**

You have the numbers 1- 10 in a bag.You draw a slip at random and draw another without replacing the first. Find the probability that both numbers are odd.

**Math**

sqrt of 450 simplified with solution

**Math**

1) The manager of a warehouse would like to know how many errors are made when a product’s serial number is read by a bar-code reader. There are 24 errors after 1000 scans. Is it reasonable for the manager to expect less than 5% errors in 1000 scans? 2) Just to be sure, the ...

**Math**

A manufacturer of flea collars for animals that weigh less than 5 kilograms injects the collars with 15 milligrams of a biocide that only acts on fleas. The manufacturer will release a collar that has no less than 14 milligrams and no more than 16 milligrams of insecticide. ...

**Math**

2/5 of the 40 students in class are girls. 1/4 of the girls wear glasses. How many girls do not wear glasses?

**Math**

Carter Kurtz a 7 foot piece of wood into eight equal size pieces to make chair legs how long is each piece of wood