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Advocard [28]
3 years ago
13

Find the domain and range of the equation:b(x)=|x-3|​

Mathematics
1 answer:
zzz [600]3 years ago
4 0

Domain: Set of all real numbers.

The domain in interval notation is (-infinity, infinity)

The reason why the domain is the set of all real numbers is because we can pick any number we want for x, without having to worry about division by zero errors or taking the square root of negative values. There are no restrictions for x.

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

Range: Set of all non-negative numbers.

As an inequality, you would write y \ge 0 (y is greater than or equal to 0)

In interval notation, the range is written as [0, infinity)

The absolute value result cannot be negative. The smallest y = |x| can get is y = 0. This applies to y = |x-3| as well. The use of square brackets tells the reader "include y = 0 as part of the range". You always use curved parenthesis for infinity because you can never actually reach infinity.

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Can you Solve. 3x^2+10x+3
Alika [10]
You cannot solve for x but you can factor

to solve in ax^2+bx+c form you must find
b=x+y
a times c=x times y

so solve

3 times 3=9

what 2 number multily to get 9 and add to get 10
9=x times y
the numbers are 9 and 1 so

3x^2+1x+9x+3
(3x^2+1x)+(9x+3)
factor
(x)(3x+1)+(3)(3x+1)
reverse distribute
ab+ac=a(b+c)

(x)(3x+1)+(3)(3x+1)=(x+3)(3x+1)
factored out form is (x+3)(3x+1)

6 0
3 years ago
Read 2 more answers
Use bayes's rule to find the probability that a child from this population who has inadequate intake is 11 to 13 years old.
12345 [234]

Answer:

Step-by-step explanation:

So A = the child is 5-10 years old and B = the child is 11-13 years of age and that covers all the children in the study. I = calcium intake is inadequate.

3 0
3 years ago
Write an expression to represent: Four less than the product of one and a number xxx
rusak2 [61]

Answer:

xxx-4

Step-by-step explanation:

(1×xxx)-4

yietisyksykd

4 0
3 years ago
Read 2 more answers
With no advertising your newspaper has a circulation of 6000 papers. For each dollar you spend on advertising, your newspaper ci
Brilliant_brown [7]

Answer:

Step-by-step explanation:

First, the profit formula:

PROFIT= TOTAL REVENUE - TOTAL COST

Next, note the points:

- Without Advertisement, Q = 6,000 where Q is quantity supplied

- A formula that gives the total profit P in dollars must take into account that 100cents = 1dollar

- Here, only a dollar is spent on advertisement, hence, Q = 6005

- Advertising expenses have been accounted for and [P = 9cents × Q] where Q is quantity sold.

- 9 cents = 0.09 dollars

TOTAL PROFIT FORMULA = 0.09Q - 500

8 0
3 years ago
A number is 5 more than 3 times another number. The sum of the two numbers is 33. As an equation, this is written x + 3x + 5 = 3
Cloud [144]

Answer:

x=7, so the smaller number is 7 and the larger number is 21.

Step-by-step explanation:

x=3x+5=33

Let x=3:

(3)+3(3)+5=3+9+5=17, not 33, so x is not 3

Let x=5:

(5)+3(5)+5=5+15+5=25, not 33, so x is not 5

Let x=7:

(7)+3(7)+5=7+21+5=33, so x=7

Let x=9:

(9)+3(9)+5=9+27+5=41, not 33, so x is not 9

Therefore x=7. Because x represents the smaller number, and the larger number is 3 times the smaller number, the smaller number is 7 and the larger number is 3(7)=21.

6 0
3 years ago
Read 2 more answers
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