Ask question

Ask question

All categories

4 years ago

15

Which function's domain consists of all real numbers except -2?

2 answers:

Olin [163]4 years ago

8 0

That would be the first and the last functions.

Genrish500 [490]4 years ago

7 0

Answer: Choice A

The reason why is because x = -2 leads to the denominator x+2 being zero. It's not possible to have 0 in the denominator (aka you can't divide by zero). The answer is not choice D as other x values are excluded from the domain instead of just x = -2. Recall that negative numbers aren't allowed under the square root so the domain of choice D would be x > -2 as you'd solve x+2 > 0 for x.

You might be interested in

The relationship between the weight y gram and the edge x cm for a cube of gold is y = 19.3x3 A cube of gold weighs 652 grams. C

Nutka1998 [239]

The length of the edge of the cube is 3.23 cm .

<u>Step-by-step explanation:</u>

We have , The relationship between the weight y gram and the edge x cm for a cube of gold is y = 19.3x3 or $y = 19.3x^3$ . A cube of gold weighs 652 grams i.e. y = 652 . Let's calculate value of x from above data:

$y = 19.3x^3$

⇒ $y = 19.3x^3$

⇒ $652= 19.3x^3$

⇒ $19.3x^3=652$

⇒ $\frac{19.3}{19.3}x^3=\frac{652}{19.3}$

⇒ $x^3=\frac{652}{19.3}$

⇒ $\sqrt[\frac{1}{3} ]{x^3} = \sqrt[\frac{1}{3} ]{\frac{652}{19.3}}$

⇒ $({x^3})^\frac{1}{3} =({\frac{652}{19.3}})^\frac{1}{3}$

⇒ $x =(33.78)^\frac{1}{3}$

⇒ $x =3.23$

Therefore, the length of the edge of the cube is 3.23cm.

3 0

3 years ago

Writing each fraction a mixed number as a decimal, what is 0.23

pantera1 [17]

Answer:

23/100

Step-by-step explanation:

i look it up

4 0

3 years ago

Lelu [443]

y = 3x - 2 is the answer!

y = mx + b

m = slope

b = y-intercept

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

4 0

3 years ago

Write the equation of a sine function that has the following characteristics.

slava [35]

Answer:

$\displaystyle y = 7\sin(9\pi(x + {1}/{4}) )$

Step-by-step explanation:

we are given

Amplitude:7
Period:9π
Phrase shift:¼

remember that,

$\displaystyle y = A \sin(B(x + C) )+ D$

where A is the Amplitude

B is the Period

C is the Phase shift

D is the vertical shift

note that, since D isn't given we'll take it 0

altogether substitute:

$\displaystyle y = 7\sin(9\pi(x + {}^{1}/_{4}) )+ 0$

hence,

our equation is

$\displaystyle y = 7\sin(9\pi(x + {}^{1}/_{4}) )$

and we are done!

5 0

3 years ago

Read 2 more answers

What's the largest perfect square that goes into 72?

Zolol [24]

Answer:

64

Step-by-step explanation:

8² = 64

9² = 81 ( doesn't fit into 72)

7 0

3 years ago