The point (–3, –5) is on the graph of a function. Which equation must be true regarding the function?

Mathematics

2 answers:

bearhunter [10]3 years ago

6 0

Answer:

f(-3)=-5

Step-by-step explanation:

Artist 52 [7]3 years ago

3 0

Answer:

$f(-3)=-5$

Step-by-step explanation:

we are given a point as

(-3,-5)

we know that any point can be represented as (x,y)

so, (x,y)=(-3,-5)

now, we can find x and y

we get

$x=-3$

$y=-5$

we know that any function can be represented as

$y=f(x)$

It means when x=-3 , y=-5

so, we can plug these values

and we get

$-5=f(-3)$

$f(-3)=-5$

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26. Law of sines, please give a step by step explanation

Stels [109]

Answer:

174.6 ft

Step-by-step explanation:

It can be helpful to draw a diagram of the triangle we're concerned with. (See attached.)

We know the angle at the end of the shadow inside the triangle is 52°-22° = 30°. We assume the tree is growing straight up out of the hillside, so its angle with the hill inside the triangle is 90°+22° = 112°. Then the remaining angle between the shadow and the tree at the top of the tree is ...

180° -30° -112° = 38°

Now, we have the angle opposite the tree, and the angle opposite the known side length of the triangle (215 feet along the hill, AC in the diagram). This is enough information to usefully use the Law of Sines.

c/sin(C) = a/sin(A)

c = a(sin(C)/sin(A)) = (215 ft)(sin(30°)/sin(38°)) ≈ 174.6 ft

The height of the tree is about 174.6 feet.