MATHEMATICS HIGH SCHOOL

Which of the sets of ordered pairs represents a function?A = {(1, −2), (3, −5), (5, 2), (7, 5)}

B = {(4, 2), (4, −2), (9, 3), (9, −3)}

only A
only B
Both A and B
neither A or B

Answers

Answer 1

Answer:

Answer:

Option A is correct.

only set A is the ordered pairs represents a function.

Step-by-step explanation:

By the definition of a function, for each input there exists a unique output.

In particular, for each value of x there exists unique value of y.

In set A,

we have four ordered pair (1, -2) , (3, -5) , (5, 2) and (7, 5)

For each input value of x in set A, there is a unique value of y in set A.

therefore, Set A is a function.

In set B,

we have four ordered pair (4, 2) , (4, -2), (9, 3) and (9, -3)

which means for x=4 , we have two values of y, i.,e 2 and -2

⇒ for a single value of x , there exist more than one value of y,

therefore set B is not a function

Answer 2

Answer: It's only A, because for each x, there's only one y, unlike B where there are two values for x=4 and two for x=9.

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Line segment AB measures 18 units. A number line with no numbers. A closed circle above the line is labeled A. A closed circle nine notches down the line is labeled B. The space between point A and the next notch is labeled d. What is d, the distance between tick marks on the number line? 1 unit 2 units 3 units 9 units

What is 34/51 in its simplest form

Answers

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In sunlight, a vertical stick 7 ft tall casts a shadow 3 ft long. At the same time a nearby tree casts a shadow 11 ft long. How tall is the tree? Round to the nearest tenth.

Answers

Answer:

25.7 feet.

Step-by-step explanation:

Let x be the actual length of tree.

We have been given that in sunlight, a vertical stick 7 ft tall casts a shadow 3 ft long. We are asked to find the actual length of tree casting a 11 ft long shadow.

We will use proportions to solve our given problem.

$(x)/(11)=(7)/(3)$

Upon multiplying both sides of our equation by 11, we will get:

$(x)/(11)*11=(7)/(3)*11$

$x=(77)/(3)$

$x=25.6666666\approx 25.7$

Therefore, the tree is 25.7 feet tall.

$look\ at\ the\ picture\n\n\Delta ABC\sim\Delta D EF\n\n(|ED|)/(|EF|)=(|AB|)/(|BC|)\n\n(|ED|)/(11)=(7)/(3)\ \ \ \ /\cdot11\n\n|ED|=(77)/(3)\n\n|ED|\approx25.7\ (ft)\leftarrow Answer$

If f(x) = 4x +5, find f(5).

Answers

The value of the functionf(x) = 4x +5 at x = 5 is f(5) = 25

What is function?

"It is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output."

For given example,

Given function: f(x) = 4x +5

We need to find the value of f(x)

This means, we need to find the function f(x) when x = 5

Substitute x = 5 in the given function.

⇒ f(x) = 4x +5

⇒ f(5) = 4(5) +5

⇒ f(5) = 20 + 5

⇒ f(5) = 25

Therefore, f(5) = 25

Learn more about the function here:

brainly.com/question/13581879

#SPJ2

F(5)=4x+5
F(5) is 0 at this point
Subtract 5 from both sides
-5=4x
Divide both sides by 4
-5/4=x
So f(5)=-5/4

Follow the steps in purple to evaluate:4
+
9
To add or subtract fractions, their denominators
must be the same. We can get a common
denominator by multiplying the second fraction
by 3/3.
6
-
(-}).
What number belongs in the green box?
Enter

Answers

I think it is 3 but I’m not 100%

I do not understand how to get the answer

Answers

OK so you have x and 16 and 14 so you have to use the formula a^2 + b^2 = c^2 to find your answer

if you look at your triangle the long side is 16 the middle side is 14 is you subtract the 14 from 16 y=2

A bird sits on top of a lamppost. The angle of depression from the bird to the feet of an observer standing away from the lamppost is 35 degrees. The distance from the bird to the observer is 25 meters. How tall is the lamppost? Draw a diagram, label it, and show how to find this value.