![timijebs](/avatars/2906.jpg)
timijebs
08.01.2021 •
Mathematics
 I WILL GIVE BRAINLIEST AND POINTS HELP PLEASE
Solved
Show answers
More tips
- C Computers and Internet How to Reinstall Windows: A Detailed Guide for Beginners...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
- F Food and Cooking Лечо: вкусное и простое блюдо для любой кухни...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
Answers on questions: Mathematics
- M Mathematics What is true about the number of sides in any regular polygon that has at least one line of symmetry passing through two vertices? Answers:...
- M Mathematics Find the slope of the line. 3/2 -3/2 2/3 -2/3...
- M Mathematics Simplify the expression...
- M Mathematics F(x) = 7x9 – 5x6 + 10x3...
- M Mathematics Giving Brainlist: I don t know what the answer is or how to solve it.... HELPPPPPPPP PLEASEEE...
- M Mathematics What is |13| 16 is it = ?...
- M Mathematics The length of a rectangular deck is three times it s width. If the deck s perimeter is 32 ft, what is the decks area?...
- M Mathematics A person takes a multiple-choice exam in which each question has five possible answers. Suppose that the person has no idea about the answers to three of the questions and...
- M Mathematics A diner asked its customers, Did you cook dinner last night? The results on the survey are shown in the table belo Male Female Cooked dinner 305 279 Did not cook dinner 152...
- M Mathematics Find the expanded form equation of y=(x-4) ² shifted - 6 units to the right...
Ответ:
a)
∞![, -\frac{4}{3}](/tpl/images/1021/2657/2cc2c.png)
∪
, ∞![)](/tpl/images/1021/2657/9c8e9.png)
b)
∞)
Step-by-step explanation:
The domain of a function is known as the input. We need to find whatever set of numbers can be plugged into every x of a function so that the result is a real number.
a) This problem is a fraction alone, so we need to find out what input of x will make the denominator zero - that will be the number we "skip" when writing out the domain. This is because if the denominator were zero, then it would be 1 divided by 0, which would be undefined and therefore not a real number.
To find this number, we can just take the denominator and solve for x:
Therefore
∞,
) ∪
∞
is our answer.
b) This problem is just a square root alone, so we need to find out what input of x will make the number inside the square root negative - that number, and the numbers less than it, will be the numbers that we "skip." This is because if the number inside the square root was negative, then it would produce an imaginary answer and not a real one.
A simple trick to find the domain would be to set the terms inside the square root greater than or equal to 0 then solve for x:
Thus, the domain would be any number greater than or equal to
, which in interval notation would be written
∞).
Ответ:
Area of the rectangle = ( x²+12x+27)unit²
Step-by-step explanation: Length = x+3 Breadth = x+9
∴ Area of Rectangle = L×B
(x+3)(x+9) = x²+9x+3x+27 = (x²+12x+27) unit²