1,090 Answered Questions for the topic Math Equations

Math Equations

08/07/13

Solve the equation cx/2 = af/g for x
Solve the equation cx/2 = af/g for x. A. x = caf/2g B. x = gaf/2c C. x = 2af/cg D. x = 2cg/af
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Math Equations

08/07/13

In the equation c2 – 4 = 0, c is equal to
In the equation c2 – 4 = 0, c is equal to A. 8. B. ±2. C. 16. D. ±4.
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Math Equations

08/07/13

If the area of a square is represented by the formula A = s2, and the area A = 64 sq cm (square
If the area of a square is represented by the formula A = s2, and the area A = 64 sq cm (square centimeters), what is the side s of the square? A. 8 cm B. 4 cm C. 32 cm D. 16 cm
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Math Equations

08/07/13

What is the reciprocal of the number 2?
What is the reciprocal of the number 2? A. 1/2 B. 2/1 C. 22 D. √2
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Math Equations

08/07/13

If the area A of a triangle is 60 sq m (square meters) and the base b is 20 m (meters), what is the
If the area A of a triangle is 60 sq m (square meters) and the base b is 20 m (meters), what is the altitude h? A. 6 m B. 2/3 m C. 11/2 m D. 3 m
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Math Equations

08/07/13

The formula for finding the volume of a pyramid is v = bh/3. What formula should you use to find the
The formula for finding the volume of a pyramid is v = bh/3. What formula should you use to find the altitude h? A. h = 3v/b B. h = v/3b C. h = 3b/v D. h = 3bv
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Math Equations

08/07/13

The distance h a body will move in a free fall is expressed by the formula h = 1/2 gt 2. If g = 980 cm per
The distance h a body will move in a free fall is expressed by the formula h = 1/2 gt 2. If g = 980 cm per sec per sec and t = 20 sec, the distance h is A. 368,000 cm. B. 9,800 cm. C. 49,000... more
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Math Equations

08/07/13

Solve the equation 7x – 8a = 3x + 24a for x.
Solve the equation 7 x – 8a = 3x + 24a for x. A. x = 32a B. x = 8a C. x = 24a D. x = 3a
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Math Equations

08/07/13

Suppose you're given the formula n = 3m – 2l. If you know that l = m + 2, how could you rewrite the
Suppose you're given the formula n = 3m – 2l. If you know that l = m + 2, how could you rewrite the formula? A. n = m – 4 B. n = 2m + 2 C. n = 2m – 4 D. n = m + 2
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Math Equations

08/07/13

Solve the following equation for y: 2 + v4y – 3 = 11
Solve the following equation fory: 2 + √4y – 3 = 11 A. y = 18 B. y = 3 C. y = 36 D. y = 6
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Math Equations

08/07/13

Find the area of a triangle with a base of 10 in. and an altitude of 14 in. (The formula for the area of a
Find the area of a triangle with a base of 10 in. and an altitude of 14 in. (The formula for the area of a triangle is A = bh ÷ 2.) A. 140 sq in. B. 280 sq in. C. 70 sq in. D.24 sq in.
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Math Equations

08/07/13

Ohm's law can be expressed by the formula i = e/r. From this formula, find the formula
Ohm's law can be expressed by the formula i = e/r. From this formula, find the formula for resistance r. A.r = e/i B.r = ie C.r = i + e D.r = i/e
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Math Equations

08/07/13

Calculate the current in a circuit whose electromotive force is
Calculate the current in a circuit whose electromotive force is 100 volts and resistance is 5 Ohms. Use the formula i = e/r. A. 105 A B. 0.05 A C. 500 A D. 20 A
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Math Equations

08/06/13

Calculate the force of gravity on earth of an object that has a mass of 200 kg.
Calculate the force of gravity on earth of an object that has a mass of 200 kg?  A. 20 N     C. 326 N B.123 N      D. 1,962 N
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Math Equations

08/06/13

Do you always use the property of distribution when multiplying monomials and polynomials?
Explain why or why not. In what situations would distribution become important?Provide an algebraic expression that uses the property of distribution for yourclassmate to simplify.
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Math Equations

08/06/13

What four steps should be used in evaluating expressions?
Can these steps be skipped or rearranged? Explain your answers. Provide analgebraic expression for your classmate tosimplify.
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Math Equations Word Problem

08/05/13

Help! Math word problem!
castel left the mall driving west one hour before dan. dan drove in the opposite direction going 40mph slower than castel for 3hours after which time they were 335miles apart. find castel's... more
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Math Equations

08/03/13

Help me with this problem?
Show that (ln x)y"+(1/2)y'+y=0 has a regular singular point at x=1.
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Math Equations

08/01/13

Determine whether the equation defines a function with independent variable x. If it does, find the domain. If it does not, find a value of x which there
corresponds more than one value of y. x/y/= x+9
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Math Equations

07/31/13

Find the indicial equation?
Find the indicial equation, the recurrence relation, and the roots of the indicial equation for 2xy"+y'+xy=0. Answer: r(2r-1)=0; an= -(an-2/((n+r)[2(n+r)-1]; r1=1/2, r2=0 I used the substitution... more
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Math Equations

07/31/13

Find all values?
Find all values of α for which all solutions of x^2*y"+αxy'+(5/2)y=0 approach zero as x→0. Answer: α<1
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Math Equations

07/30/13

3.If x is the price of a chair what algebraic expression could be written to represent this problem
2.If you need to buy 6 chairs additionally for the table and have a $2000 budget, what is the highest price you can pay for a chair? (Ignore sales tax).3.If x is the price of a chair what algebraic... more
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Math Equations

07/28/13

Rewrite this as a sum?
Rewrite sigma from n=2 to infinity of n(n-1)anxn-2 as a sum whose generic term involves xn. Answer: sigma from n=0 to infinity of (n+2)(n+1)an+2xn Please help me step by step.
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Math Equations

07/26/13

Find the general solution?
Find the general solution of y(4)-y=3t+cos t. Answer: y=c1et+c2e-t+c3cos t+c4sin t-3t-(1/4)t*sin t r=1, -1, i, -i, But how do I figure out the form of the particular solution?
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Math Equations

07/22/13

dividing decimals
HI. My name is cj         how do you divide 0.21 by 0.33    it is very challenging. thank you
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