HELP PLEASE!!!!!!!!!!

Dmitriy789 [7]

Answer:

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable). Functions are ubiquitous in mathematics and are essential for formulating physical relationships in the sciences.As we have seen in examples above, we can represent a function using a graph. Graphs display many input-output pairs in a small space. ... The most common graphs name the input value x and the output value y , and we say y is a function of x , or y=f(x) y = f ( x ) when the function is named f .

Step-by-step explanation:

Brainlist will be very accept if you want took me a while to do :)

7 0

3 years ago

Dan bought 8 shirts and 3 pants. Devonte bought 12 shirts and 5 pants. For each person, write a ratio to represent the number of

shutvik [7]

Answer:

Step-by-step explanation:

Dan bought 8 shirts and 3 pants. This means that the ratio representing the number of shirts to the number of pants that Dan bought is 8/3 = 2.67

Devonte bought 12 shirts and 5 pants. This means that the ratio representing the number of shirts to the number of pants that Devonte bought is 12/5 = 2.4

Therefore, they are not equivalent ratios because the relationship is not exactly the same.

3 0

3 years ago

Four brothers work together to mow 3 equal-sized fields. Each brother mows the same amount. How much does each brother mow? Mark

REY [17]

It is 3 fourths of a field

7 0

3 years ago

Read 2 more answers

If 12 cats can catch 6 rats in 2 hours, how many hours would it take 50 cats to catch 75 rats?

sleet_krkn [62]

Answer:

50 cats would take 6 hours to catch 75 rats.

Step-by-step explanation:

After reading the statement we noticed the existence of two relationships:

1) <em>The amount of cats is directly proportional to the quantity of caught rats.</em>

2) <em>The amount of cats is inversely proportional to time taken to catch rats. </em>

That is to say:

$n \propto \frac{x}{y}$

$n = k\cdot \frac{x}{y}$ (Eq. 1)

Where:

$n$ - Amount of cats, dimensionless.

$x$ - Amount of caught rats, dimensionless.

$y$ - Time, measured in hours.

$k$ - Proportionality ratio, measured in hours.

Then, we obtain the following relationship by eliminating the proportionality ratio in (Eq. 1):

$\frac{n_{1}\cdot y_{1}}{x_{1}} = \frac{n_{2}\cdot y_{2}}{x_{2}}$ (Eq. 2)

Where:

$n_{1}$ , $n_{2}$ - Initial and final amounts of cats, dimensionless.

$x_{1}$ , $x_{2}$ - Initial and final amounts of caught rats, dimensionless.

$y_{1}$ , $y_{2}$ - Initial and final times, measured in hours.

Now we clear final time in (Eq. 2):

$y_{2} = y_{1}\cdot \left(\frac{n_{1}}{n_{2}} \right)\cdot \left(\frac{x_{2}}{x_{1}} \right)$

By knowing that $y_{1} = 2\,h$ , $n_{1} = 12$ , $x_{1} = 6$ , $n_{2} = 50$ , $x_{2} = 75$ , then we get that time taken by 50 cats to catch 75 rats is:

$y_{2} = (2\,h)\cdot \left(\frac{12}{50} \right)\cdot \left(\frac{75}{6}\right)$

$y_{2} = 6\,h$

50 cats would take 6 hours to catch 75 rats.

7 0

4 years ago

The vertex of a parabola is at $(12, -4)$, and its axis of symmetry is vertical. One of the $x$-intercepts is at $(15, 0)$. What

laila [671]

Answer:

9

Step-by-step explanation:

Since the axis of symmetry is vertical and the vertex of the parabola is at (12,-4), the vertical line x=12 is the axis of symmertry. The x-distance between the axis of symmetry and the first x intercept (15,0) is equal to 15-12=3. Hence, this x-intercept is 3 units to the right of the axis, and because it is symmetric, the other x-intercept must be 3 units to the left of the axis, so its x-coordinate must be 12-3=9. Then, the other x-intercept is at the point (9,0)

5 0

4 years ago