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slava [35]
3 years ago
13

(1 point)

Mathematics
1 answer:
san4es73 [151]3 years ago
7 0

Answer:

Step-by-step explanation:

2x - 9y = 23

5x - 3y = -12x - 9y = 23

5x - 3y = -1

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Find the domain of the function
Svetradugi [14.3K]

Answer:

<em>The domain of f is (-∞,4)</em>

Step-by-step explanation:

<u>Domain of a Function</u>

The domain of a function f is the set of all the values that the input variable can take so the function exists.

We are given the function

f(x)=\frac{1}{\sqrt{4-x} }

It's a rational function which denominator cannot be 0. In the denominator, there is a square root whose radicand cannot be negative, that is, 4-x must be positive or zero, but the previous restriction takes out 0 from the domain, thus:

4 - x > 0

Subtracting 4:

- x > -4

Multiplying by -1 and swapping the inequality sign:

x < 4

Thus the domain of f is (-∞,4)

7 0
2 years ago
( 5.6 - 1.2 ) times 1/3 =
vladimir1956 [14]

Answer:

4.4* 1/3

4.4= 4 and 4/10 so 44/10*1/3= 44/30= 22/15

22/15

Step-by-step explanation:

6 0
3 years ago
Answer like gauss 1+3+5+7+...=999
raketka [301]

1+3+5+7+...+999 =

= 1+2+3+4+...+500

     +1+2+3+...+499

= 2·(1+2+3+...+499) + 500

= 2·(499·500)/2 + 500

= 499·500 + 500

= 500·(499 + 1)

= 500·500

= 250.000

7 0
3 years ago
A farmstand sells bags containing 3 2/3 lb of apples. Elena bought 25 2/3 lb of apples. How many bags of apples did Elena buy?
Tcecarenko [31]
She would've bought 7 bags of apples, I believe.
3 0
3 years ago
Which property can be used to expand the expression -2(3/4x+7)?
Mademuasel [1]

Answer:

C

Step-by-step explanation:

The distributive property in algebraic terms is

a(b + c) = ab + ac

given the expression

- 2(\frac{3}{4} x + 7) ← multiply each term in the parenthesis by - 2

= - \frac{3}{2} x - 14

3 0
3 years ago
Read 2 more answers
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