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Nookie1986 [14]
3 years ago
8

What do i say for this please help :((((

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
3 0

Answer:

Step-by-step explanation:

Error 1) It should be divided by 5.

x - 5 = 0

x = 5

Error 2) -3   15   0    -1     5

coefficient of x² is 0 and it is not included

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What are the best data structures to create the following items? And why? Designing a Card Game with 52 cards. Online shopping c
NeX [460]

Answer:

The best data structure in storing card is an array.

The best choice for a shopping cart is hash-maps. the advantage of harsh mark is that they are dynamic in nature.

Waiting lists are managed by a method called the  First In First Out. when an individual is  waiting  for too long, he or she should be given the first chance for service.

Sorted links are a better options for storing tickets.

Step-by-step explanation:

Solution

In other to store the cards the best structure to be applied here is an array.

Now, we are aware the array size, which comprises of 52 items, and hence card vales can be  easily stored  For standard 52-deck cards, a 2D array of size 4x15 can also be applied, with 4 being color count, and 13 being card in each color.

In this example, the better option for shopping cart is hash-maps, because it is dynamic in nature for instance, when items are  removed and more often, and also, there is a need for mapping of item ID or name to its actual database, so these values can be kept or stored as key-value pairs.

Waiting lists are normal managed in a way of First In First Out, since a person is waiting longer should be given the first chance for service. this FIFO method is best used by a Queue. so this online waiting list can best be used by a queue.

For tickets storing, a better option will be the sorted linked lists. because the tickets are to be stored in a large amount, and there will be deletions and insertions in large quantity. so keeping them in a sorted list will reduce the resource usage and the trade-off made as high search time will also have less effect, as there will be a limited number of searches.

 

3 0
3 years ago
A ball is projected upward from the ground. Its distance in feet from the ground in t seconds is given by s left parenthesis t r
julia-pushkina [17]

Answer:

t = 5.46 secs and t = 2.42 secs

Step-by-step explanation:

The distance of the ball from the ground is given by:

s(t) = -16t^2 + 126t

When the ball is at a distance 211 ft from the ground, that means s(t) = 211 ft. we need to find t:

211 = -16t^2 + 126t

=> 16t^2 -126t + 211 = 0

Using the quadratic formula:

t = \frac{-b + \sqrt{b^2 - 4ac} }{2a} and t = \frac{-b - \sqrt{b^2 - 4ac} }{2a}

where a = 16, b = 126 and c = 211

Hence:

t = \frac{-(-126) + \sqrt{(-126)^2 - 4(16)(211)} }{2(16)}     and          t = \frac{-(-126) - \sqrt{(-126)^2 - 4(16)(211)} }{2(16)}

t = \frac{126 + \sqrt{15876 - 13504} }{32}                     and           t = \frac{126 - \sqrt{15876 - 13504} }{32}

t = \frac{126 + \sqrt{2372} }{32}                                and           t = \frac{126 - \sqrt{2372} }{32}

t = \frac{126 + 48.703 }{32}                                and           t = \frac{126 - 48.703 }{32}

t = \frac{174.703}{32}                                     and           t = \frac{77.297}{32}

=> t = 5.46 secs and t = 2.42 secs

This means that the ball will be at 211 feet at two different times, first, after 2.42 seconds and then after 5.46 seconds.

This makes sense because the ball is projected upwards, which means that when going up, it attains 211 feet and also, when coming back down, it also attains 211 feet.

6 0
3 years ago
Jill paid $35 for a sweater. This was $5 less than twice what she paid for a pair of shorts. How much did Jill pay for the pair
Harman [31]

Answer:

she pays 40$ for shorts

Step-by-step explanation:

35$ + 5$ = 40$ - 5$ = 35$

3 0
3 years ago
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I do not under stand mad, what is the answer. A step by step solution will also help a lot
nydimaria [60]

Answer:

3

Step-by-step explanation:

start by finding the mean of the data set find the sum of the data values and divide the sum by the number of data values find the absolute value of the difference between each data value and the mean:)

3 0
3 years ago
A triangular pyramid has these dimensions.
marishachu [46]

Answer: 42 cm3

Step-by-step explanation:

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3 years ago
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