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PolarNik [594]
3 years ago
15

Solve 4x to the second power Minus 9

Mathematics
2 answers:
kipiarov [429]3 years ago
7 0
2so 4x^2-9 is obviously the difference of 2 perfect squares

so (a)^2-(b)^2 can be factored into (a-b)(a+b)

so 4x^2-9=(2x)^2-(3)^2 which is (2x-3)(2x+3)
alexira [117]3 years ago
6 0

4x^2-9

Here I have included 3 methods: Differentiating, Integrating and factorize

Differentiating:

4x^2-9

2*4x^2^-^1

8x^2^-^1

= 8x

Integrating:

\int\limits 4x^2-9dx

\frac{4x^3}{3}-9x+C

Factorise:

(2x-3)(2x+3)

 

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5yr is how many days
Karolina [17]
There are 1,826 days in 5 yr. In relation to the leap year, there are 1826.25 days in 5 yrs. That is because there are really 365.25 days in a year (making every four years a leap year). So, when you multiply 365.25 by 5, you get 1826.25. 
6 0
3 years ago
Read 2 more answers
John wants to find the center of a wall so he can hang a picture. He measures the wall and determines it is 65.25" wide. 65.25"
antiseptic1488 [7]

Option B is correct.

John wants to find the center of a wall so he can hang a picture. He measures the wall and determines it is 65.25" wide.

Here, 65.25" is Quantitative, continuous

There are two types of quantitative data or numeric data: continuous and discrete.

As a general rule, counts are discrete and measurements are continuous. A continuous data can be recorded at many different points (length, size, width, time, temperature, etc.)

So, option B is the answer.


3 0
3 years ago
Please help (geometry)
jarptica [38.1K]
<h3>Answer: 54 degrees (third choice)</h3>

Explanation:

AB is a diameter of circle C. This leads to angle ACB being 180 degrees. By Thales Theorem (a special case of the inscribed angle theorem) we know that angle D is 90 degrees.

Therefore, triangle ADB is a right triangle. The acute angles (A and B) add to 90, and we can say they are complementary angles.

A+B = 90

36+B = 90

B = 90-36

B = 54 degrees

6 0
3 years ago
Can somebody help me with this?
Juli2301 [7.4K]

Answer:

E) 1/2

Step-by-step explanation:

This is no ordinary problem. It actually requires you to solve two different problems in order to figure out the correct answer.

First, we must figure out what the hypotenuse of the triangle is. We have the two small sides (5 and 12), but don't have the larger side. To find this, we must use the Pythagorean theorem: a^{2} + b^2 =c^2

Let's plug in our a and b values

5^2 + 12^2 = C^2

Simplify

144 + 25 = c^2

169 = c^2

Square both sides

c = 13

But sadly, we aren't done yet. Now we know the length of the whole hypotenuse side. Time to figure out what X is by a simple equation.

12x + 14x = 13

Simplify

26x = 13

Divide by 26

Answer is 1/2

6 0
3 years ago
Please help!!!!!!!!!!​
natta225 [31]

if 15 x 1.8 = 27 then

45 x 1.8 = 81

so answer: B) 81

8 0
3 years ago
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