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2 years ago

Solve (x^2+4)(x^2-4)

Mathematics

2 answers:

timurjin [86]2 years ago

3 0

(x^2+4)(x-2)(x+2)orx^4 - 16

wolverine [178]2 years ago

3 0

If you need to expand, you multiply all the terms:

x^2 * x^2 = x^4
x^2 * -4 = -4x^2
4 * x^2 = 4x^2
4 * -4 = -16

And then combine:

x^4 - 4x^2 + 4x^2 - 16

Which becomes:

x^2 - 16

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George observes that for every increase of 1 in the value of x, there is a increase of 60 in the corresponding value of y. He cl

Brums [2.3K]

Hi there!

FACTS :

To see if multiple ratios are proportional, you can write them as fractions, reduce them, and compare them. If the reduced fractions are all the same, then you have proportionnal ratios. You can also write them as fractions and divide the numerator (top number) by its denominator (bottom number), and compare the decimal numbers the same way you would compare the fractions (I personnaly find this method easier because you don't need to simplify the fractions).

STEPS TO ANSWER:

x = 1 ; y = 90 → $\frac{1}{90} =$ 1 ÷ 90 = 0.01111111...

x = 2 ; y = 150 → $\frac{2}{150} =$ 2 ÷ 150 = 0.0133333...

x = 3 ; y = 210 → $\frac{3}{210} =$ 3 ÷ 210 = 0.01428571

x = 4 ; y = 270 → $\frac{4}{270} =$ 4 ÷ 270 = 0.0148148...

x = 5 ; y = 330 → $\frac{5}{330} =$ 5 ÷ 330 = 0.01515152

** You didn't really need to calculate them all because even the first two decimal numbers weren't equivalent, but I wanted to show you the whole process so I calculated them all.

⇒ If you compare all the decimals you got, you can easily see that they are not the same, which means that the ratios between the values of "x" and the values of "y" are not proportional. Therefore, George's reasoning wasn't good.

There you go! I really hope this helped, if there's anything just let me know! :)

5 0

3 years ago

Use parentheses to make this statement true: 8 x 4 - 2 x 3 + 8 / 2 = 25

Vladimir79 [104]

(8 times 4) - (2 times 3 = 8) divided by 2

7 0

3 years ago

Read 2 more answers

There are three boxes, one contains only apples, one contains only oranges, and one contains both apples and oranges. The boxes

mars1129 [50]

The correct option is C

Containing both apples and oranges.

<h3>What is permutation and combination?</h3>

Combination and permutation are two methods for breaking down a set of objects into smaller groups. Any arrangement is possible when combining the parts of the subset. The parts of the subset are listed in a permutation in some certain order.

<h3>Briefing of the given statement:</h3>

The "apples and oranges" box needs to be opened, according to the briefing. By definition, the only type of fruit in the box is the one that is inside. Let's imagine you found one apple in the box that was marked with both the words "apples" and "oranges" on the label. You deduce that the box marked "apples" must subsequently only contain apples and that the box marked "oranges" cannot contain only oranges because all of the boxes have supposedly been labeled incorrectly. The box labeled "oranges" must therefore contain both apples and oranges, whereas the box labeled "apples" may only contain oranges.

To know more about permutation and combination visit:

brainly.com/question/13720848

#SPJ4

I understand that the question you are looking for is:

There are three boxes, one contains only apples, one contains only oranges, and one contains both apples and oranges. The boxes have been incorrectly labeled such that no label identifies the actual contents of the box it labels. Opening just one box, and without looking in the box, you take out one piece of fruit. By looking at the fruit, you can immediately label all of the boxes correctly. Which box did you open?

A. Containing apple

B. Containing oranges

C. Containing both apples and oranges

D. Cannot be determined

3 0

1 year ago

What is the price per ounce for 10 ounces and the cost is $1.75

ollegr [7]

Answer:

The price per ounce is $0.175.

Step-by-step explanation:

Given:

Number of ounces = 10

Price of 10 ounces = $1.75

We know that, from unitary method, price of a unit quantity is given as:

$\textrm{Unit rate}=\frac{\textrm{Total price}}{\textrm{Number of quantities}}$

Here, the number of quantities correspond to the number of ounces.

Total price corresponds to the price of the 10 ounces which is $1.75.

Now, unit rate or price per ounce is given as:

Price per ounce = $\frac{1.75}{10}$

Price per ounce = $0.175

Therefore, the price per ounce is $0.175.

3 0

3 years ago

PLEASE HELP x+4y=6 x+y=3 Solve for x and y

slamgirl [31]

I don't understand the y after the 4... but would it be x=2 y=1 ?

7 0

2 years ago

Read 2 more answers