# Math

## Recent Questions

**Math 7a**

can someone explain how to get the answer to 3a - 4 less than or equal to 5

**Math**

1. Which ratios form a proportion? (1 point) a. 3/15, 12/55 b. 8/24, 12/35 c. 5/18, 25/90 d. 4/11, 16/25 2. Which ratio forms a proportion with 9/15? (1 point) a. 6/10 b. 16/21 c. 36/50 d. 45/70

**math**

I just want to check to make sure I am correct -- my equation is y = -x^2 + 90x - 800 If x = 100, -x^2 would be 10,000, not -10,000? Because -100 x -100 is 10,000, not -10,000 --- my calculator keeps giving me a negative number. So my overall number is 18,200

**Math 7a**

Can someone explain how to get the answer to n/-3 + 5 greater than 4?

**Math**

Which ratios form a proportion? a. 4/9, 12/25 b. 3/7, 18/42 c. 5/11, 20/45 d. 5/8, 15/25 Which ratio forms a proportion with 18/30? a. 20/35 b. 50/90 c. 36/48 d. 60/100 Which proportion has cross products of 5 x 24 and 8 x 15? a. 5/8=15/24 b. 5/24=8/15 c. 8/24=15/5 d. 15/8=5/24

**math**

There is 2/3 remaining of a rectangular birthday cake.Cathy needs to have 6 equal sized pieces.What fraction of the original cake each person will get.

**Math**

graph the solution to each inequality y > 2

**math**

As an aid in drawing the human body, artists divide the body into three parts. Each part is then expressed as a fraction of the total body height. For example, the torso is 4/15 of the body height. What fraction of body height is the head? Below the waist the 3/5

**MATH**

WHILE SETTING UP THE STORE AND SHOPPING, HOW WE CAN ENSURE THE ASPECTS OF KINDNESS, NEATNESS AND SAFETY?

**Math 8th Grade Pre Algebra**

1. 5h - 9 = -16 + 6h a. 4 b. -7 c. 7 d. 10

**math**

A country has 135 years of iron reserves at the current rate of consumption. Suppose that the demand for iron in the country is 10,000,000 tons per year. Furthermore the iron is consumed at a rate that increases 7.5% per year. (a) How long will the iron reserves last? (b) ...

**Math**

20+20

**Math**

Find the values of the variables. [-12 -w^2] = [2k -81 2f 3 -14 3 Please help me. I don't know how to do this at all, and can you show your work so I can understand better. Thanks

**Math**

Pablo found that his uncleâ€™s age can be divided by three different prime numbers. What are three possible ages of his uncle? Show your work.

**math**

ali has a tree in his backyard. The tree grows 25 cm each year. Since the tree started growing Ali has trimmed 16 cm off its height. The goal for the trees height is given by 25x-16 is greater than or equal to 234, where x is the number of years the tree grows.

**Math**

These statements describe the depth at which two sea creatures are swimming. Note that sea level is equal to zero. The six-gill shark is swimming 8,200 feet below sea level. The fangtooth fish is swimming 6,500 feet below sea level. Complete this sentence. The six-gill shark ...

**Math**

Please help and explain on this question: Sam's credit card balance is less than -$36. Does Sam owe more or less then $36?

**math**

-8 is greater than or equal to 1.6m

**math**

Why does pie go on forever? Why is it called pie?

**Math**

Angelique says that finding the absolute value is the same as finding the opposite of the number. For example, -5=5.. Explain her error. I need help on the question, and what is the absolute value.

**math**

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.100000 cm thick to a hemispherical dome with a diameter of 55.000 meters.

**Math**

According to the National Center for Health Statistics, the mean height of an American male is 69.3 inches and the mean height of an American female is 63.8 inches. The standard deviation for both genders is 2.7 inches. According to Chebyshev’s Theorem 75% of the data for ...

**Math**

(-w)(-10w^3)

**Math**

So this is such an easy question but they say to change the numbers to make it "friendlier" so like make it easier. Change 12 X 15 to friendlier numbers, as you saw in the video. Give your answer and explain or show how you got it. I can't prosses how to do this! I know the ...

**Math**

Rosa and her friends used 1 2/3 quart of paint on Monday and 1 3/4 quart of pain on Tuesday. How much paint will Rosa and her friends need on Wednesday? How do i help my child figure out how to do this problem

**Math**

How many feet does a wheel with a diameter of 20 inches travel after one, five, and 30 revolutions?

**Math**

The width of a rectangular garden is 2 feet more than 1/3 of its length. The perimeter is 52 feet. Find the dimensions of the rectangle.

**Math**

IMG_0188.jpeg

**Math**

Lindsey is 5 years less than half her father's age. The sum of their ages is 79. How old is Lindsey?

**Math**

Find the equation of a line with the given slope and passing through the given point, P. d) m = -1/2, P(-2,6)

**Math**

Gabrielle can run at a constant speed of 58.2 seconds per 400 meters. At this rate, how long will it take her to run 900 meters?

**math**

Find an integer $x$ such that $\frac{2}{3} < \frac{x}{5} < \frac{6}{7}$

**math**

Find their slopes and conclude whetever the lines are parallel, perpendicular or neither a) y = 3 x = - 2 b) y = -4 y = x

**MATH**

Given the following functions f(x) and g(x), describe the changes (horizontal shifts, vertical shifts, etc.) to the graph of g(x) with respect to the graph of f(x). F(X) = l x l g(x) = - lx+3l - 2

**Math**

M is the set of integers that are greater than -1 and less than 4 I don't understand?? i know it's easy but i don't understand how to solve it

**math**

Determine whether the given measure can be the lengths of the sides of a triangle. Write yes or no. 1. 8, 9, 17 2. 23, 26, 50 3. 12.3, 13.9, 25.2

**9th grade math**

Given the following functions f(x) and g(x), describe the changes (horizontal shifts, vertical shifts, etc.) to the graph of g(x) with respect to the graph of f(x). * 3 points f(x)=lxl g(x)= -lx+3l-2

**Math**

At an internet provider, the cost, C naira of sending an email of 5pages or over is given by the formula C=50(P-2), where P is the number of pages to be sent a. Find the cost of sending an email of 25pages b. If it cost 800 naira to send an email message, how many pages does ...

**6th math**

Every 24 hours, Earth makes a full rotation around its axis. Earth's speed of rotation at the equator is 1,670 km per hour. What is the circumference of Earth's equator?

**math**

Write an expression to represent: Four more than the product of one and a number xxx.

**Math**

Write an equation for the line that is parallel to the given line and passes through the given point. y=2x+4; (3,8) A. y = 2x + 2 B. y = 2x + 6 C. y = -2x + 6 D. y = -1/2x + 2** Am I correct?

**APY-math**

find the annual percentage yield (to the nearest 0.01%). a bank offers an APR of 3.1% compounded daily.

**math**

1. Find the length of the hypotenuse of a right triangle with legs of 9 cm and 12 cm A. 8 cm B. 21 cm C. 15 cm D. 225 cm the length of the hypotenuse of a right triangle with legs of 13 cm the length of one leg is 5 cm find the length of the other leg A. 14 cm B. 144 cm C. 8 ...

**math**

Find the sum of the following series up to 9th term: 2√3+9÷√3+12÷√3+....

**English**

1. They study sea animals in Aantarctica. [What does 'in Antarctica' modify? 'Sea animals' or 'study'? Are they in Antarctica now? Or though they are not in Antarctica, are they study sea animals at home or at a workplace.] 2. Look at the boy in the room. [What about 'in the ...

**Math**

Constance invested $4500 for 3 years in a savings account paying simple interest with a yearly interest rate of 3.5%. How much simple interest did she earn? Please show your work :)

**Math**

10 4/17 ÷ 4 5/9

**Math helppp**

Two small planes leave the Abbotsford airport at the same time. The first flies at 225km/h at a heading 320°, while the second flies at 190km/h at the heading of 70°. How far apart are they after 2 hours?

**math 7/8 grd**

d+s ˃ -3 d ˃ -7 find s it says the answer is 4 (s=4) but it seems not ok because depending on d the number can be pretty much anything

**Math**

A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, there can be 0 interactions. If there are 2 children, there can be 6 interactions. If there are 3 children, there can be 15 interactions. IF there are 4 ...

**math 7/8 grd**

d+s ˃ -3 d˃-7 find s the answer supposed to be 4, but I think it is not correct, because depending on d it might be pretty much anything.. any thoughts?

**Math**

A printer can print 68 lines per minute. How many lines can it print in an hour?

**Math**

Dylan has 765 cards in his baseball card collection. He sells 153 of the cards. What is the percent of decrease in the number of cards in the collection? i'm Lost I've been trying for about a good 20 minutes

**math**

The bearing of A and B from a port p are 225 degree and 116 degree respectively.ship A is 3.9 km from ship B on a bearing of 258 degree. Calculate the distance of ship A from p

**Math**

You earn 10 points for every coin you collect in a video game. then you find a star that triples your score. a. write an expression for the number of points you earn from the coins. b. write and simplify an expression for the total number of points you earn.

**MATH**

I am a proper fraction. The sum of my numerator and my denominator is 1 less than a perfect square. The difference of my denominator and my numerator is 1 more than a perfect square. The product of my numerator and my denominator is 1 less than a perfect square. What fraction ...

**math**

I have a table and was given an equation of best fit - the table is about the growing US population. My equation of best fit is y = 106.7236(1.0124)^x I found my y intercept and the population in 2013. Now it is asking when will the US population break 400 million. In 2013 the...

**Math**

Can someone help? The way the question is worded is confusing me. You earn 10 points for every coin you collect in a video game. Then you find a star that triples your score. a. write an expression for the number of points you earn from the coins. b. write and simplify an ...

**math**

The number of boxes on a truck varies directly with the time since the workday began. At 3 hours after the workday began, there are 207 boxes on the truck. How many boxes should we expect there to be on the truck hours after the workday began? Show the math.

**math**

A giant football field is made for the floor of the gym. The length of the gym is 90 feet. Using this same scale, determine the width of the paper football field. How do I solve this if it says that the dimensions are 160 ft? by 360 ft. and the end zone is 160 ft. by 30 ft. ...

**math**

Can someone help me figure this out? You earn 10 points for every coin you collect in a video game. Then you find a star that triples your score. a. Write an expression for the number of points you earn from the coins. b. Write and simplify an expression for the total number ...

**Math**

A jazz band sells 31 large boxes of fruit and 74 small boxes of fruit for a fundraiser. a. Write and simplify an equation using distributive property to find the profit. b. A large box of fruit costs $9 and a small box of fruit costs $4. What is the Jazz's band profit? Profit...

**Math**

Mary wants to buy some new shoes that cost $95. She also wants to buy some packages of socks. Each package of socks costs $8. She has a total of $127 dollars. Write and solve an equation to find how many packages of socks she can buy

**math**

Sarah bought 18 eggs from the store. How many dozen eggs did she buy? (1 dozen = 12) 1+1/2** 1+1/3 1+1/4 1+1/6

**Math**

The table shows how many miles Jack ran per week for weeks one through nine. x y 1 3 2 5 3 6 4 9 5 10.5 6 13 7 15 8 16 9 19 Question: a. Use the table to plot the points. b. Describe the correlation, including whether it is strong or weak. c. Draw a line of best fit. d. Write ...

**Math**

I the question is simple but I haven't done fractions in a while. So check my answer please. Are and equivalent fractions? A. No B. Yes, because both fractions are divisible by 2.**** C. Yes, because the difference between the denominator and numerator in each fraction is ...

**Math**

Which digit(s) makes 3,71[_] divisible by 3? I don't need help with the answer but what is [_] or is the _ for the missing number?

**Math help**

i JUST need help with this question. 16. Elizabeth and Sara were at a carnival. They each got a ticket for the Ferris wheel. Ella got a snow cone, and Margaret got a cotton candy. Ella had a certificate for $5.50 off the cost. Margaret paid the rest, which came to $14.25. Each...

**Consumer Math**

Your car insurance is paid quarterly( every 3 months). If your payment is $163.92, How much should your estimated monthly expense be? A. $40.00 B. $55.00* C. $110.00 D. $220.00

**Math**

a. For the first company, express in words the amount the cab company charges per ride and per mile. Charges per ride $3.00 per mile $0.50 b. Write an equation in slope-intercept, point-slope, or standard form. Explain why you chose the form you did. Don't know How would I do ...

**Math**

1.The actual distance between two cities is 135 km the map scale is 1 cm:100 km. Find the map distance. A)13.5 B)1.35////My answer//// C)0.135 D)1350 2. On a map of New Mexico, 1 cm represents 45 km. The distance from Albuquerque to Santa Fe is 2 cm. Find the actual distance. ...

**Math helppp**

Sin 8theta -sin 10theta= cot 9theta (cos 10theta - cos 8 theta)

**Math**

Nasreen is designing an obstacle course that includes two ladders leaning against a pole. In order for the ladders to fit in the obstacle course, one ladder must span 1.6 m horizontally and the other must span 5 m horizontally. She already has one 4.3-m ladder. How long must ...

**Math**

Carolina runs 3 1/2 miles in 22 1/4 Minutes. how many miles does she run per minute A.) 3/22 mike per minute B.) 62/221 mile per minute C.) 14/89 mike per minute D.) 4/39 mike per minute

**math**

If a scientists is looking at a circle of 1.15 millimeters in diameter, how much of the circle can he see in centimeters?

**Math (Helping my brother)**

Kyle types college reports for $2.15 per page. He also charges $5 to cover the cost of supplies. Write an expression for total earnings for typing a report of p pages. Then evaluate the expression for a 28-page report. A) 2.15p + 5; $60.20 B) (2.15 + 5)p; $200.20 C) 2.15 + 5p...

**Math**

In a class, 2/7 of the pupils are girls. 1/2 of the girls and 1/3 of the boys in the class wear glasses. If 10 boys wear glasses, how many of the girls wear glasses?

**math**

Question 7 The first three terms of a geometric sequence are as follows. 10,30,90

**Math Unit 3**

1. Complete the paragraph proof Given: ∠A and ∠B are complementary, and ∠B and ∠C are complementary Prove: ∠A ≌ ∠C By definition of complementary angles, m∠A + _____ = 90° and m∠B + m∠C+ _______. Then, m∠A + m∠B = m∠B + m∠C by the ...

**Math/calculus**

Prove Sin 8theta -sin 10theta= cot 9theta (cos 10theta - cos 8 theta)

**6th math**

It took 3.5 hours for an airplane traveling at a constant speed of 550 miles per hour to reach its destination. What distance did the airplane travel until it reached its destination? What????

**Math**

explain why it is important to correctly line up numbers according to their place value when doing a division problem

**6th math**

Light travels at 186,000 miles per second. Light takes about 11⁄3 seconds to travel from the earth to the moon. Calculate the distance between the earth and the moon based on the speed of light. ???

**Math**

CHECK AND CORRECT MY ANSWERS!! PLEASE!!:D:D Write the ratio in the simplest form. 45:15 9:3 3:1*** 1:3 4:1 Solve the following proportion. (solve p) p/3 = 8/12 2*** 8 12 24 A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to calculate how much ...

**Math/calculus**

Tan 165° Use appropriate identity and evaluate

**Math**

8+24+√5

**Math/calculus**

Cos^2x-sin^2x/sin^4x-cos^4x Simplify

**Math**

"Cab companies often charge a flat fee for picking someone up and then charge an additional fee per mile driven. Pick a U.S. city and research the rates of two different cab companies in that city. Find companies that charge different amounts per mile and have different flat ...

**Math**

The 7-digit numbers 74A52B1 and 326AB4C are each multiples of 3. Which of the following could be the value of C ? A) 1 B) 2 c) 3 D) 5 E) 8

**Math**

The 7-digit numbers 74A52B1 and 326AB4C are each multiples of 3. Which of the following could be the value of C ?

**Math helppp**

Graph f (x) = 3cos (4pix -pi/2) -2

**Math**

1. 23/40 - 11/30 (1 point) A. 0 B. 1 C. 1/2

**math**

solve the proportion 4/5=x/27

**Chem**

You're studying the effect of stereotype threat on test performance. You randomly assign your participants to either a control condition (in which they are given the test with simple instructions on how to complete it) and an experimental condition (in which you first inform ...

**math**

a recent survey of 8 randomly selected social networking sites has a mean of 13.1 million visitors for a specific month. the standard deviation is 4.1 million find the confidence interval of the true mean

**Math**

A differnt answer for the 2 digit factors whose product is greater then 200 but less than 600 besides 10 an 21

**math help**

9D+12=84

**Math/calculus**

Graph f (x) = 3cos (4pix -pi/2) -2

**Math**

A) Write a numerator for each fraction to make the fraction close to, but not equal to, 1/2. Then, write another numerator to make each fraction close to, but greater than 1. 1) _/22 2) _/43 3) _/17 My Answers: 1) 10, I believe. 2) 20? I dont know, please help with this one. 3...

**math**

10a) Simplify the expression and explain each step. 12 + 3(2y – 3) Step 1: apply distributive property Step 2: combine like terms Step 3: simplify b) Factor the expression completely. 18b – 12 What is the GCF of 18 and 12? Use ladder method or listing.