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DerKrebs [107]
3 years ago
15

Whats the definition of quadratic expression

Mathematics
1 answer:
pantera1 [17]3 years ago
8 0
A quadratic expression<span> is any mathematical </span>expression<span> whose power or degree is two. In other words, any </span>expression<span> that uses variables where the highest exponent or the </span>expression's<span> degree is two is a </span>quadratic expression<span>. The </span>expression<span> must have a power of two, no higher nor lower.</span>
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Is algebra.
Ket [755]

Answer:

6(x-10)(x+9)

Step-by-step explanation:

First, make A equal one by factoring out the greatest common factor, 6. This makes the new expression 6(x^{2} +x-90). Then, factor the remaining polynomial by finding two numbers that multiply to -90 and add to 1. These two numbers are -10 and 9. So, add each term to x and then multiply to get the final answer, 6(x-10)(x+9).

5 0
3 years ago
Name the sampling method used in each of the following situations:
elixir [45]

Answer:

a) Convenient

b) Cluster

c) Stratified

d) Systematic

e) Random

Step-by-step explanation:

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

Situation a:

Asks all from a single group(sitting passengers), that is, convenint sample.

Situation b:

First she separates the students by row, then from each row, she chooses all students. So this is Cluster sampling.

Situation c:

The manager separates the stores by location, and then in each location, random customers are chosen. This is an example of Stratified sampling.

Situation d:

Marks for every fourth patron, that is, every 4th element. So Systematic sampling.

Situation e:

People chosen at random, so Random sampling.

6 0
3 years ago
A number cubed is subtracted from a different number.
Aleksandr [31]
What do you mean ?!???
8 0
2 years ago
Major league baseball’s fastest recorded pitch is 105 miles per hour.The distance between the pitchers mound and home plate is 6
vovikov84 [41]

Answer:

1.75 seconds to get to the batter

7 0
3 years ago
Steve is buying apples for the fifth grade.each bag holds 12 apples.if there are 75 students total,how many bags of apples will
kirill115 [55]
72 divided by 12 equals 6 apples each student
7 0
3 years ago
Read 2 more answers
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