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1 year ago

This is hard please help it makes no sense

Mathematics

2 answers:

posledela1 year ago

8 0

We will find the length of DE using trigonometric ratios. And the trigonometric ratio we will use here is

$\sf \tan( \theta) = \frac{opposite}{adjacent}$

Opposite = 17 m
Adjacent = DE
θ = 51°

$\tt \tan(51°) = \frac{17}{x}$

$\tt \tan(51°) \times x = 17$

$\tt \: x = \frac{17}{ \tan(51°) }$

$\tt \: x≈13.766$

$\boxed{ \sf \: x≈13.8 \: (when \: rounded \: off)}$

Thus, Option C is the correct choice!!~

tigry1 [53]1 year ago

3 0

Answer:

lk12

Step-by-step explanation:

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PLEASE HELP ASAP 25 POINTS

Lisa [10]

We're going to go ahead and eliminate one answer out of the four. It cannot be B (the second answer) because the graph is made of dotted lines.

Dotted Lines = > or <

Solid Lines = ≤ or ≥

Next, let's focus on the straight line on the graph.

The equation for the line is

y = x - 4

Since the shaded region is below the line,

the equation will be y < x - 4

We can now eliminate answer A

Since the second equation is y < - l x - 2 l

It will be shaded below the graph since it uses the ( < ) (less than symbol)

This means the answer is C

Hope I helped, message me if you have any questions : )

8 0

2 years ago

A company that manufactures storage bins for grains made a drawing of a silo. The silo has a conical base, as shown below:

sasho [114]

To find the volume of this storage bin, you will use the formula for volume of a cylinder and of a cone.

V = Bh (cylinder)
Pi x r^2 x h
Pi x 2^2 x 10

V = 1/3 x pi x r^2 x h
1/3 x pi x 2^2 x 3

All of these choices show correct answers!

4 0

2 years ago

Worth 10 pts ... pls help

Wewaii [24]

Answer:

the length is 8cm???

Step-by-step explanation:

its kind of obvi (i Think)

6 0

2 years ago

Read 2 more answers

Select the correct answer from each drop-down menu.

RSB [31]

Evidence are simply facts to support a claim, while counterexamples are instances to show the contradictions in a claim

The question is incomplete, as the required drop-down menus are missing. So, I will give a general explanation

To show that a statement is true, you need evidence.

Take for instance:

$\mathbf{if\ a^2 = 4,\ then\ a = 2}$

The evidence that the above proof is true is by taking the squares of both sides of $\mathbf{a = 2}$

$\mathbf{a^2 = 2^2}$

$\mathbf{a^2 = 4}$

However, a counterexample does not need a proof per se.

What a counterexample needs is just an instance or example, to show that:

$\mathbf{if\ a^2 = 4,\ then\ a \ne 2}$

An instance to prove that: $\mathbf{if\ a^2 = 4,\ then\ a = 2}$ is false is:

$\mathbf{a = -2}$

Hence, the complete statement could be:

In a direct proof, evidence is used to support a proof . On the other hand, a counterexample is a single example that shows that a proof is false.

Read more about evidence and counterexample at:

brainly.com/question/88496

5 0

1 year ago

BC = 6x + 6, AB = 8 +9, and AC = 141. Find BC

Dahasolnce [82]

Answer: 60

Step-by-step explanation:

Since AB and BC creates AC, we can add them together to find x, then use that to find the value of BC.

8x+9+6x+6=141 [combine like terms]

14x+15=141 [subtract both sides by 15]

14x=126 [divide both sides by 14]

x=9

Now that we have found the value of x, we can plug that into BC.

6(9)+6 [multiply]

54+6 [add]

Now, we know the length of BC is 60.

3 0

2 years ago