Use the sum-to-product formulas to rewrite the sum or difference as a product.
What will be an ideal response?
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Find the first term and the common ratio of the geometric sequence.
, 
, 
, 
, . . .
A. a1 = 
, r = 
B. a1 = 
, r = 6
C. a1 = 
, r = 
D. a1 = 
, r = 
Solve.A chemist needs 11 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 3.3 liters of the 20% solution; 7.7 liters of the 70% solution B. 2.2 liters of the 20% solution; 8.8 liters of the 70% solution C. 4.4 liters of the 20% solution; 6.6 liters of the 70% solution D. 5.5 liters of the 20% solution; 5.5 liters of the 70% solution
Solve the problem.A projectile is fired from a cliff 300 feet above the water at an inclination of 45° to the horizontal, with a muzzle velocity of 190 feet per second. The height h of the projectile above the water is given by 
where x is the horizontal distance of the projectile from the base of the cliff. Find the maximum height of the projectile.
A. 282.03 ft B. 564.06 ft C. 1146.09 ft D. 582.03 ft
Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(4 × 3)(4 × 3)
A. 4 × 3 B. not defined C. 4 × 4 D. 3 × 4