Find the value of x. I need some help

Answer:

E

Step-by-step explanation:

Cos=Adjacent/hypotenuse

Cos30=rad3/2

The cosine function for Ф = 30 is equivalent to :

cos(30) =√3/2.

There are six major trigonometric functions as -

We can write the relation between them as -

Also the following trigonometry relations hold true -

sin²Ф + cos²Ф = 1

1 + tan²Ф = sec²Ф

1 + cot²Ф = cosec²Ф

Given is a right angled triangle as shown in the image having 60 - 90 - 30 orientation and the measured sides as shown in the image.

We can write the cosine function as -

cosФ = Base/Hypotenuse

cos(30) = √3/2

So, we can conclude that the cosine function for Ф = 30 is equivalent to :

cos(30) =√3/2

Therefore, the cosine function for Ф = 30 is equivalent to :

cos(30) =√3/2.

To solve more questions on trigonometric functions, visit the link below-

https://brainly.com/question/30672622

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Answer:

f(1) = 42

Step-by-step explanation:

Step 1: Switch all x out to 1 for f(1) which would look like this: f(1)=4(1)^2+3(1)+13

Step 2: You would then simplify it starting with 4(1)^2 which would equal 4 squared which equals 16.

Step 3: After simplifying you would have f(1)=16+3+13

Step 4: You then just add and get 42

Hope this helped :D

Answer:

X would be 360

Step-by-step explanation:

A full circle is 360 degrees.

Answer:

150cm...........................

Answer:

maddy is 150 centimeters tall.

Step-by-step explanation:

"there are 100 centimeters in 1 meter, so in 1.5 meters, there are 150 centimeters."

hope this helps <3

Answer:

The answer is A. 77.

Step-by-step explanation:

Using trigonometry formula

We know, tan = opposite/adjacent

So, tan x° = 13/3

=> x° = [tex]tan^{-1}[/tex](13/3)

∴ x° = 77.005° ≈ 77.01°

Answer:

A 77

Step-by-step explanation:

Answer:

You use a calculator

Step-by-step explanation:

I mean that is the answer to everything

Answer:

10

Step-by-step explanation:

Answer:

3141.59 cm cubed

Step-by-step explanation:

The formula for volume of a cone is:

V=πr²h /3

When you plug in your numbers, you'll get your answer!

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Have a good day :)

Answer:

1000π cm³

Step-by-step explanation:

v = ⅓×π×10²×30

= 1000π cm³

or 3,140 cm³

Answer:

-4 and 10

Step-by-step explanation:

let me know if this is incorrect

Answer:

[tex]\$1583.33[/tex]

Step-by-step explanation:

Let [tex]d[/tex] be the amount of money you need to save each month to have the full $23,000.

We can write the following inequality:

[tex]4,000+12d\geq 23,000[/tex]

Solving for [tex]d[/tex]:

[tex]4,000+12d\geq 23,000,\\12d\geq 19,000\\d\geq \approx \boxed{\$1583.33}[/tex]

Answer:

The solution to the system is all the points that satisfy both inequalities or the region in which the shading overlaps. Given the system of linear inequalities shown in the graph, let's determine which points are solutions to the system. The point (0, -1) is not a solution to the system of linear inequalities.

Step-by-step explanation:

thank me later

An .

Step-by-step explanation:

how cares

Answer:

1) 113.1

Step-by-step explanation:

6 x 6 = 36 x Pi(3.14)

Answer:

2) 49.135

Step-by-step explanation:

The area of the triangle is 24. The area of the "half circle" is 25.1.

Add them together, and get 49.135.

Hope this Helps!

-kiniwih426

Answer:

y = -2x - 16

Step-by-step explanation:

y = -2x + b

-2 = -2(-7) + b

-2 = 14 + b

b = -16

Answer:

(-8,-4)

Step-by-step explanation:

(y,-x)

Answer:

The equation of hyperbola :  [tex]\frac{y^{2} }{49 } - \frac{x^{2} }{32 }[/tex]

Step-by-step explanation:

Given - This hyperbola is centered at the origin.

Foci: (0,-9) and (0,9) Vertices: (0,-7) and (0,7)​

To find - Find its equation.

Solution -

We know  that,

Equation of Hyperbola is represented by

[tex]\frac{y^{2} }{a^{2} } - \frac{x^{2} }{b^{2} }[/tex]

Now,

Given that,

Foci : F(0, -9) and F'(0, 9)

So,

c = 9

And

Vertices : A(0,-7) and A'(0,7)​

So,

a = 7

Also, we know that,

c² = a² + b²

⇒b² = c² - a²

⇒b² = 9² - 7²

⇒b² = 81 - 49

⇒b² = 32

So,

The equation of hyperbola becomes

[tex]\frac{y^{2} }{49 } - \frac{x^{2} }{32 }[/tex]

Answer:

erika read more because 1/2 is more than 1/3.

Answer:

Erica = D

Step-by-step explanation:

This is because 1/2 = 0.5 and 1/3 = 0.33 and 0.5 is bigger than 0.33

Answer:

5*3ˣ

Step-by-step explanation:

We see that when x=0 y=5

this means that we can write

a*b⁰=5

a*1=5

a=5

Now we just need to solve for B

using the point (1,15) we can write

15=5*b¹

3=b

Which all comes together to mean

5*3ˣ

Answer:

f(8) = 195

Step-by-step explanation:

When the x if f(x) is replaced with an 8, this just means that it is the eighth term. All you really have to do is replace every X in the function to find the answer.

f(8) = 3 + 3(8)²

f(8) = 3 + 3(64)

f(8) = 3 + 192

f(8) = 195

Hope this helps!

Answer:

195

Step-by-step explanation:

plug 8 =x into the equation

Answer:

The difference in the medians is about 1.5 hours.

The interquartile range for middle school students is 5, and the interquartile range for elementary school students is 3

Both sets of data have the same maximum and minimum values.

Step-by-step explanation:

Answer:

A, C, and D

Step-by-step explanation:

Answer:

62 because that one is an acute so I hope this was helpful

Answer:

n = 8

Step-by-step explanation:

The angles are vertical angles and so they are equal

9n = 8n+8

Subtract 8n from each side

9n - 8n = 8n+8-8n

n = 8

The answer is D. (7,8)

You are able to count from 0 to ten, and you always put the x number first!

Hope this helps :)

Answer:

The domain of a function is the set of all possible inputs for the function.

Step-by-step explanation:

For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.

Hope this helped!

Answer:

minimum = 55 F

Maximum = 71 F

Step-by-step explanation:

Change means it could either go down or up.

If it goes down by 8 then 63-8 = 55 F

If it goes up by 8 then 63 + 8 = 71 F

Hope this helps!

Answer:

Step-by-step explanation:

minimum 55

maximum 71

Answer:

7% per annum

Step-by-step explanation:

Mathematically, we have t he formula for simple interest as;

I = PRT/100

I is the interest which is the difference between the amount deposited and the amount withdrawn

That would be 5445 - 4500 = 945

R is the rate which we want to calculate

T is the time which is 3 years

Thus, we have ;

R = 100I/PT

R = (100 * 945)/(4500 * 3)

R = 7%

Answer:

Improper Fraction: 15 /2

Mixed Number: 7 1/2

Step-by-step explanation:

You want to add the improper fractions together: 3/2 + 5/2 + 7/2 = 15/2

Answer: 1 1/4 and 9/64, respectively

Step-by-step explanation:

First one: Rectangle area= Side1 x Side2= 5/3x3/4=1 1/4

Second one: Square area:

Side length squared= 3/8^2=3/8•3/8=9/64

Answer:

(rounded)17.2=Q

Step-by-step explanation:

Q= 13/cos41

Answer:

What is your question???

Step-by-step explanation:

Answer:

12 11/35

Step-by-step explanation:

Given Data

First term= 15 3/5

To simple fracrion= 78/5

Second term= 3 2/7

To simple fracrion= 23/7

Hence the operation goes thus

= 78/5- 23/7

LCM = 35

=546-115/35

=431/35

=12 11/35

Answer:

[tex] 12 \frac{11}{35} = \frac{431}{35} [/tex]

Step-by-step explanation:

[tex]15 \frac{3}{5} - 3 \frac{2}{7} \\ (15 - 3) + ( \frac{3}{5} - \frac{2}{7} ) \\ 12 + ( \frac{3}{5} - \frac{2}{7} ) \\ 12 + \frac{11}{35} [/tex]

[tex] \boxed{Answer:{\boxed{\green{= 12 \frac{11}{35} = \frac{431}{35}}}}} [/tex]