1,070 Answered Questions for the topic Math Equations

Math Equations

04/17/13

#### If the width of a rectangle is 8 inches and its perimeter is 42 inches, find the length of the rectangle.

The length of the rectangle is what in inches?
Math Equations

04/17/13

#### A barrel contains 190 gallons of water and is being drained at a constant rate of 14 gallons per hour.

Type an equation that models the number of gallons, g, after t hours  The equation that models the given situation is ?
Math Equations

04/17/13

Math Equations

04/17/13

#### Use symbols to write the expression and then evaluate it.

Four squared divided by two to the fourth power. (Type exponential notation with positive exponents.)
Math Equations

04/17/13

#### The cost of driving a car includes both fixed costs and mileage costs.

Assume that it costs $171.90 per month for insurance and car payments and$0.27 per mile for gasoline, oil, and routine maintenance. (a) Find values for m and b so that y=mx+b models the monthly... more
Math Equations

04/17/13

#### The number N of state and federal inmates in millions during year x,

Where x>2002 can be approximated by the following formula. N=0.05x-99.05 Determine the year in which there were 1.2 million inmates. It was in the year ?
Math Equations

04/17/13

#### Use the method of substitution to solve the system of linear equations.

4x-y=2 9x-2y=7 The solution is what? (Type an ordered pair.)
Math Equations

04/17/13

Math Equations

04/17/13

y=x+5, x=7 y=?
Math Equations

04/17/13

#### Use the elimination method to solve the system of equations.

a+8b=3 a+2b=-3 Select the correct choice below and if a is the correct choice write out the answer and simplify your answer and write an ordered pair again only if a is the correct answer. (a)... more
Math Equations

04/17/13

#### Write the function as a set of ordered pairs. Give the domain and range of f.

f(a)=t, f(b)=p, f(c)=r, f(d)=t f=? (Type ordered pairs. Use a comma to separate answers as needed.) Domain is ? (Type ordered pairs. Use a comma to separate answers as needed.) The range is ?... more
Math Equations

04/17/13

#### Translate the pharse into a mathmatical expression and than simplify.

Seven times a number decreased by twice the same number. (a) Write the corresponding mathematical expression. (Type an expression using x as the variable do not simplify.) (b) The simplified... more
Math Equations

04/17/13

#### Using the formula A=lw, find the area of the rectangle

The length and width given are 2x^3 and 4x^3 The area is what? (Type a simplified exponential expression.)
Math Equations

04/17/13

#### Use the formula d=rt to find the value of the missing variable.

d=195 feet, t=39 seconds r=what in feet/seconds?
Math Equations

04/17/13

Math Equations

04/12/13

#### Evaluate the expression. Write the answer in standard form.

(-4 x 10^-6) (2 x 10^4) =?
Math Equations

04/12/13

#### A moon is about 240,000 miles from the planet orbits.

(a) Write this number in scientific notation. (b) If a rocket at 6 x 10^4 miles per hour, how long would it take for it to reach the moon from the planet. (Use the multiplication symbol in the... more

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