Use multiplication shortcuts to find the product.20 × 4 × 5
A. 40
B. 4000
C. 500
D. 400
Answer: D
Mathematics
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Find the value. Give an approximation to four decimal places.log 629 - log 328
A. 12.2371 B. 0.2828 C. 1.1124 D. 0.6511
Mathematics
Solve the equation.
+ 
= 
A. -6, 9 B. -9, 6 C. -9, -6 D. 6, 9
Mathematics
Solve the problem.Your company uses the quadratic model y = -4.5x2 + 150x to represent the average number of new customers who will be signed on (x) weeks after the release of your new service. How many new customers can you expect to gain in week 28?
A. 4074 customers B. 336 customers C. 672 customers D. -1428 customers
Mathematics
Solve the triangle.b = 2, c = 3, A = 80°
A. a = 3.3, B = 63.4°, C = 36.6° B. a = 4.3, B = 36.6°, C = 63.4° C. a = 2.3, B = 63.4°, C = 36.6° D. a = 3.3, B = 36.6°, C = 63.4°
Mathematics