1,090 Answered Questions for the topic Math Equations

Math Equations Math Precalculus Pre Calculus

05/21/16

Pre Calculus
Find the value for cos(x/2) if the following conditions hold: sin(x)=-12/13  and x is in quadrant 3 a) -√17/6 b) -√7/24 c) -√7/6 d) -√17/24
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05/21/16

The capacity of Marshfield Stadium exceeds that of Bowden by 4,389 people. the two stadiums have a capacity of 210,355 people. Find the capacity of each stadium
Just trying to figure out to get the answer
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Math Equations

05/20/16

Together, Joe and Greta have 19 computer games. Greta has 3 more games than Joe. Write and solve and equation to find the number of games each friend has.
describe how
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05/19/16

how many game swill they have paid the same amount
A hockey season ticket holder pays 72.48 dollars for her tickets plus 6.00 dollars for a program each game. A second person pays 18.08 dollars for a ticket to every game, but doesn't buy programs.... more
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Math Equations

05/18/16

I need help with radioactive decay questions
I need to know how to work radioactive decay formula and which keys in a step by step detail on a calculator
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Math Equations

05/10/16

Which of the following equations is the linear model created by the researcher ?
From the early 1970's through 2001, the rate of obesity in young American children, ages 6 to 11, has shown a linear increas. A researcher wants to develop a linear model for analyzing the rate of... more
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05/09/16

find the probability that the mean number of students is between 20 and 30.
Suppose the number of students in a class for the Business Statistics program at a University has a mean of 23 with a standard deviation of 4.3. If 15 classes are selected randomly, find the... more
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Math Equations Math Math Help

05/09/16

Find a 99% confidence interval for the population standard deviation s.
The daily intakes of milk (in ounces) for ten randomly selected people were:26.0 13.0 13.5 14.8 19.113.6 21.6 30.8 15.8 14.1Find a 99% confidence interval for the population standard deviation σ. ... more
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05/08/16

Three teachers have provided you with an equation that models their salaries in million of dollars each year.
Teacher A: A(x) = 4x + 50Teacher B: B(x) = 2x2 + 31Teacher C: W(x) = 2x - 5During which years does Teacher A make the most money? Between years Blank and Blank
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Math Equations Math Algebra 1 Algebra

05/05/16

What is 3 and one fourths in simplest form?
im not very good at math or working with fractions
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Math Equations

04/28/16

A fan uses 3 gallons of gas for 4 hours of shooting. How much will it use over two days of 10 hours of shooting
3 gallons of gas = 4 hours of shooting. How much will it use over two days of 10 hours of shooting 
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Math Equations

04/27/16

math word problem
Winona traveled 124 miles less than twice the distance caleb traveled. If Winona traveled 629 miles, how far did caleb travel? 
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Math Equations Math Math Word Problem

04/15/16

board is 8 feet king and 4 feet wide. Your teacher makes individual boards for you to use that is 11.5 inches long and 9.5 inches wide. Are the boards similar?
I need help with setting up the equation.
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Math Equations Transformations

04/13/16

Would my function be •f(x,y)= (x, y+2)?
I was asked to reflect a triangle over the x axis and I did. Then it asked me to write the function that describes the transformation • f(x,y) • My triangle only reflected 2 up so (y+2) but didn't... more
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Math Equations

04/12/16

four times a number increased by 3 is -89
i need to know how to turn it into a equation 
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Math Equations Math Algebra Algebra Help

04/10/16

Help please
According to a study, each week the average elementary child spends 17 hours watching television, 2 hours reading books, and 10 hours playing outside. What is the ratio of number of hours of... more
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04/10/16

Help please
At a gourmet nut shop, nuts are sold in bulk. Cashews sell for $1.30 per pound and macadamia nuts sell for $8.45 per pound. Lee wishes to purchase 5 pounds of mixed nuts by mixing 3.5 pounds of... more
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Math Equations Math Geometry Geometric Proofs

04/08/16

Is Bob's method for determining the area of the irregular shape valid or not?
Bob wants to find the area of an irregular shape. He cuts a piece of string to the length of the perimeter of the shape. He measures to see that the string is about 60 cm long. Bob then forms his... more
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Math Equations

04/04/16

(X-1)^-2=25
It is a math problem and I have to solve for x in the equation
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Math Equations

04/02/16

Write equation for (-7,7)(-5,-7)
I am getting lost in the signs as to how & when to change them
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Math Equations Math Math Help Mathematics

03/29/16

If I pay $0.05 for 1 megabyte of data, how much data have I used if I have to pay $30.00
I need help figuring out how much extra data I have used this billing period (this info is only my extra data, not my regular data)
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03/25/16

how can is happen that three different animals could be claimed largest?
Describe how it could happen that three different animals could each be claimed -rightfully- to be the largest of the three. Discuss the implications of this kind of situation for teaching students... more
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03/24/16

how many dump truck loads?
A construction company has dump trucks that hold 10 cubic yards. If the company's workers dig a hole that os 8 feet deep, 20 feet wide, and 30 feet long, then how many dump truck loads will they... more
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Math Equations

03/18/16

Slope-intercept form
Find the equation in slope-intercept form (2,8) and (-2,0)
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Math Equations

03/17/16

How do I solve this math problem Y=x-15
I just wanna learn how to solve the problem 
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