Which one of the following formulas correctly expresses this statement: A quantity x is equal to the sum of the squares of a and b?
A. x = 2a + 2b
B. x = √a + b
C. x = a2 +...
Which one of the following formulas correctly expresses this statement: The number x is equal to another number n plus the square root of 3.
A. x = √n + 3
B. x = 3n2
C. x = n +...
The expression a = 3b2 + 2 can be written in words as the quantity a is equal to
A. three times the square root of b plus two.
B. two more than three times the quantity b squared.
Find the current in a circuit if the power is 500 W (watts) and the resistance is 25 ohms. Round off
your answer to two decimal places. Use the formula I = √p/r.
A. 0.05 A
B. 20 A
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
In the equation c2 – 4 = 0, c is equal to
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
What is the reciprocal of the number 2?
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
Find the area of a circle with a radius of 6 ft. Round off your answer to one decimal point. (The
formula for the area of a circle is A = π r2.)
A. 18.8 sq ft
B. 355.3 sq ft
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
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...
Solve the equation 7 x – 8a = 3x + 24a for x.
A. x = 32a
B. x = 8a
C. x = 24a
D. x = 3a
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
Solve the following equation fory: 2 + √4y – 3 = 11
A. y = 18
B. y = 3
C. y = 36
D. y = 6
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.
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
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
Which of the following is a correct statement about the root of an equation?
A. The root of an equation is the solution of the equation.
B. The root of an equation is the reciprocal of the...
In mathematics, a formula is a(n)
expression of the value of the quantity.
procedure for calculating area and perimeter.
equation with three or more unknown quantities...