All categories

3 years ago

Q # 6 please multiply help

Mathematics

1 answer:

Mkey [24]3 years ago

3 0

This is a problem of Difference-of-squares. We know that for a difference of squares $a^2-b^2$ the factorization is given by:

$(a-b)(a+b)$

To learn this you need to remember that a difference means subtraction. So applying those concepts we can solve this problem step by step.

Applying distributive property:

$(2n)(2n-2)+2(2n-2)$

Applying distributive property again:

$4n^2-4n+4n+4$

Simplifying:

$4n^2-4$

The correct answer is C

You might be interested in

A recent survey asked UF students if they had a job or not, and if they were underclassmen (Freshmen and Sophomores) or uppercla

vlada-n [284]

Following the table and knowing that the total number of students interviewed were 158 ( we can see this by looking adding either the total number of upperclassment or adding the total number of people with jobs or no jobs, this value is at the bottom right of the table in the figure attached).
Recall that:
$P(A\cup B)=P(A)+P(B)-P(A\cap B)$
In the figure provided each of these terms is highlighted in a different color. To convert these values to their matching probabilities we have to divide each by the total number of students, this is due to the fact that the probability is the number of favorable cases (in this case a group matching the qualities we seek) divided by the total amount of cases ( that is the total number of people interviewed). In the figure the answer is provided. For the intersection of the two events we're looking for people that is both an undercalssman and also has a job.

3 0

4 years ago

Tim and Tom are trying to earn money to buy a new game system over a 3-month period. Tim saved $45.22 each month. If they need a

stira [4]

D is the answer. 135.66

3 0

4 years ago

How many seconds until the ball touches the ground

neonofarm [45]

Answer: 6.06 seconds

Step-by-step explanation:

This will not factor. The ball will hit the ground 6.06 seconds after thrown.

7 0

3 years ago

Solve the given system of equations. - 3a = 36 10a + 3c = 9 2b + 50 = 23

Elodia [21]

Answer:

Solve using the substitution method! Answer down below:)

Step-by-step explanation:

(a,b,c) = ( -12, -27/2,43)

Hope it helps:)

5 0

3 years ago

Possible

Alecsey [184]

<h3>Answer: Independent</h3>

For two events A and B, if the occurrence of either event in no way affects the probability of the occurrence of the other event, then the two events are considered to be independent events.

=========================================================

Explanation:

Consider the idea of flipping a coin and rolling a dice. If these actions are separate (i.e. they don't bump into each other), then one object won't affect the other. Hence, one probability won't change the other. We consider these events to be independent.

In contrast, let's say we're pulling out cards from a deck. If we don't put the first card back, then the future probabilities of other cards will change. This is considered dependent.

3 0

2 years ago