What is the domain of the function below? (-2,5)(-1,10)(4,5)(2,6)

Mathematics

1 answer:

Trava [24]3 years ago

4 0

Answer: x={-2, -1, 2, 4}

Step-by-step explanation: The domain is all of the x-values in an equation. When you record the domain, you have to put all of the values in least to greatest order.

You might be interested in

If y varies inversely as the square of x, and y=7/4/ when x=1, find y when x=3

e-lub [12.9K]

Y varies inversely as the square of x. So we can write the relation between x and y as:

$y= \frac{k}{ x^{2} }$

where k is a constant of proportionality. It is given that y = 7/4 when x = 1.
Using these values, we can write:

$\frac{7}{4}= \frac{k}{1} \\ \\ 
k= \frac{7}{4}$

So, now the equation in terms of x and y can be written as:

$y= \frac{7}{4 x^{2} }$

We are to find y when x = 3. So we can write:

$y= \frac{7}{4(9)}=\frac{7}{36}$

Thus, for x= 3 value of y will be 7/36

6 0

4 years ago

A plane flying at a certain altitude is observed from two points that are 2.2 meters apart. The angles of elevation made by the

lana [24]

$tan(72)= \frac{y}{x} ; tan(55)= \frac{y}{2.2 + x}$
$y=xtan(72);y=(2.2+x)tan(55)$
So we are to merge the two equations into one, since both of the equations are equal to y. a = b, b = c therefore, a = c.
$xtan(72)=2.2tan(55)+xtan(55)$
We are to isolate x.
$x[tan(72)-tan(55)]=2.2tan(55)$
$x=\frac{2.2tan(55)}{tan(72)-tan(55)}$
The value of x is approximately, 1.9047m
Then, substitute the value of x from $y=xtan(72)$
$y=1.9047tan(72)$
y = 5.862m
Round up, then the answer would be D.

7 0

3 years ago

A car drives 60 mph. Write and solve an eqaution to find the number of hours it takes the car to travel 360 miles.

frosja888 [35]

Answer:

1 mile per minute just divide

3 0

3 years ago

Twelve times the number of muffin pans

EleoNora [17]

X= number of muffin pans
12x

6 0

3 years ago

The money used in Tajikistan is called the

pishuonlain [190]

You will receive $21 if you exchanged 66 Somoni.

7 0

3 years ago