Each of the 7 appetizers can be paired with one of 10 entrees, and each entree can be paired with one of 6 desserts. So the number of combinations is:

7 × 10 × 6 = 420

6 0

2 years ago

An arrow is shot vertically upward from a platform 45 feet high at a rate of 168 ft/sec. Use the quadratic function

Maksim231197 [3]

Answer:

5.3 s

Step-by-step explanation:

a) since the height is defined by a function, we can find the turning point of the quadratic , which is where the ball will have the highest point. The turning point is where the gradient is equal to zero so we differentiate first

$h(t) = -16t^{2} + 168t + 45\\h'(t)= -32t+168\\0=-32t+168\\t=5.3s$

8 0

2 years ago

Read 2 more answers

The regular selling price of an item is $169. For a special year-end sale the price is at a markdown of 20%. Find the discount s

arlik [135]

I think that the answer is 845

3 0

3 years ago