If you're good at exact values of trig ratios pea shell me with 13a

If You're Good At Exact Values Of Trig Ratios Pea Shell Me With 13a

Answers

Answer 1

It is an equilateral triangle so its angles are equal 60°. From the definition, we know that:

[tex]\sin60^\circ=\dfrac{h}{4}[/tex]

and

[tex]\sin60^\circ=\dfrac{\sqrt{3}}{2}[/tex]

so

[tex]\dfrac{\sqrt{3}}{2}=\dfrac{h}{4}\quad \Big|\cdot4\\\\\\h=\dfrac{4\cdot\sqrt{3}}{2}\\\\\boxed{h=2\sqrt{3}}\\[/tex]

Answer 2

Answer:

h = √12

Step-by-step explanation:

use the Pythagorean

h² = 4² - 2²

h² = 16 - 4

h = √12


Related Questions

An octagonal pyramid ... how many faces does it have, how many vertices and how many edges? A triangular prism ... how many faces does it have, how many vertices and how many edges? a triangular pyramid ... how many faces does it have, how many vertices and how many edges?

Answers

1: 8 faces and 9 with the base 9 vertices and 16 edges

2: 3 faces and 5 with the bases 6 vertices and 9 edges

3: 3 faces and 4 with the base 4 vertices and 6 edges

Answer:

Step-by-step explanation:

Octagonal pyramid has 8 sloping faces and the base.

Total 9 faces.

Also 8 slope edges and 8  base edges

Total 16 edges.

It has 1 + 8

Total 9 vertices.

A Triangular prism has 5 faces and  9 edges.

Also 6 vertices.

Triangular pyramid has  4 faces, 4 vertices and 6 edges.

Note: The relation betseem faces, vertices and sdges in a polyhedron is given by Euler's formula:

T + V - E = 2

So we see, for an octagonal pyramid:

9 + 9 - 16 = 2.

When trying to determine where to shade on the inequality below, why is it unhelpful to test the point (4,0)?
vs-ſ=+2

Answers

Answer:

It will not be very helpful to use this point because it lies on the x-axis. Which doesn't show what area to shade.

Step-by-step explanation:

7(x+1)=21 solve for x

Answers

7(x + 1) = 21
7x + 7 = 21
7x = 14
x = 2

1. Check the divisibility of the following numbers by 2, 3, 9 and 11 a) 76543 b) 98765436
2. Which of the following numbers are divisible by 4 or 8? a) 67894 b) 9685048
WILL MARK THEM AS BRAINLIST

Answers

Answer:

1. ( I didnt understand the question but I divided them using the calculator.)

A.) 76543

÷ 2= 38,271.5

÷ 3= 25,514.333...

÷ 9= 8,504.777...

÷ 11= 6,958.454545...

B.) 98765436

÷ 2= 49,382,718

÷ 3= 32,921,812

÷ 9= 10,973,937.333...

÷ 11= 8,978,676

2. B

A.) 67894

÷ 4= 16,973.5

÷ 8= 8,486.75

B.) 9685048

÷ 4= 2,421,262

÷ 8= 1,210,631

Explanation:

I used the calculator to divide.

I hope this helps! I'm sorry if it's wrong.

Which transformations to the graph of j(x) would result in the graph of j(4x)-27

Answers

Answer:

Composition and vertical translation must be done in the parent function.

Step-by-step explanation:

Let be [tex]j(x)[/tex] the parent function, if [tex]g(x) = j(4\cdot x) -27[/tex], then two transformation must be done in the following order:

Composition

[tex]j \circ h (x) \rightarrow j(h(x))[/tex], where [tex]h(x) = 4\cdot x[/tex]

Vertical translation

[tex]g(x) = j(4\cdot x) -27[/tex]

Composition and vertical translation must be done in the parent function.

Answer: Option D

Horizontal compression by a factor of 1/4, and a translation 27 units down

Let $DEF$ be an equilateral triangle with side length $3.$ At random, a point $G$ is chosen inside the triangle. Compute the probability that the length $DG$ is less than or equal to $1.$

Answers

[tex]|\Omega|=(\text{the area of the triangle})=\dfrac{a^2\sqrt3}{4}=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}\\|A|=(\text{the area of the sector})=\dfrac{\alpha\pi r^2}{360}=\dfrac{60\pi \cdot 1^2}{360}=\dfrac{\pi}{6}\\\\\\P(A)=\dfrac{\dfrac{\pi}{6}}{\dfrac{9\sqrt3}{4}}\\\\P(A)=\dfrac{\pi}{6}\cdot\dfrac{4}{9\sqrt3}\\\\P(A)=\dfrac{2\pi}{27\sqrt3}\\\\P(A)=\dfrac{2\pi\sqrt3}{27\cdot3}\\\\P(A)=\dfrac{2\pi\sqrt3}{81}\approx13.4\%[/tex]

Answer:

13.44%

Step-by-step explanation:

For DG to have length of 1 or less, point G must be contained in a sector of a circle with center at point D, radius of 1, and a central angle of 60°.

The area of that sector is

[tex]A_s = \dfrac{n}{360^\circ}\pi r^2[/tex]

[tex]A_s = \dfrac{60^\circ}{360^\circ} \times 3.14159 \times 1^2[/tex]

[tex] A_s = 0.5254 [/tex]

The area of the triangle is

[tex] A_t = \dfrac{1}{2}ef \sin D [/tex]

[tex]A_t = \dfrac{1}{2}\times 3 \times 3 \sin 60^\circ[/tex]

[tex] A_t = 3.8971 [/tex]

The probability is the area of the sector divided by the area of the triangle.

[tex]p = \dfrac{A_s}{A_t} = \dfrac{0.5254}{3.8971} = 0.1344[/tex]

When factoring 6x2−7x−20 by grouping, how should the middle term be rewritten?

It should be written as 8x−15x.

It should be written as −2x−5x.

It should be written as x−8x.

It should be written as −x−7x.
I think its B but im not sure

Is the given equation a quadratic equation? Explain.
x(x−6)=−5

The equation is not a quadratic equation because there is no x2-term.

The equation is a quadratic equation because there is an x2-term.

The equation is not a quadratic equation because the expression is not equal to zero.

The equation is not a quadratic equation because there is a term with degree higher than 2.

Which of the following is an example of the difference of two​ squares? x2−9

x3−9

(x+9)2

(x−9)2

Answers

Answer:

(3x+4)(2x-5)

Step-by-step explanation:

Factor by grouping.

20 POINTS! ***CORRECT*** ANSWER GETS BRAINLIEST!!!!
The fraction model below shows the steps that a student performed to find a quotient.
Which statement best interprets the quotient?
A. There are 5 1/6 three-fourths in 4 1/8
B. There are 5 1/6 three and one-eights in 3/4
C. There are 5 1/2 three and one-eights in 3/4
D. There are 5 1/2 three-fourths in 4 1/8

Answers

Answer:

The answer is A pls mark me brainly

Find the value of x.

Answers

Answer:

52°

Step-by-step explanation:

64×2=128

360-128=232

so,

x=(232-128)/2

or, x=104/2

or, x=52°

The cost of wire sold by the Thor Company is shown in the graph. What is the cost of wire per foot?

1. $0.20
2. $1.25
3. $4.00
4. $5.00​

Answers

111111101010100110

Step-by-step explanation:

es 125

find the value

3
13
- 9
65

Answers

Answer:

pls correct your question

a girl walk to her anteys house and it took 45 minats and she gose to school it took her 61 minates and how many minats was it all together

Answers

Answer:

45+61=106

the answer for this question is 106 minutes

Step-by-step explanation:

Answer:

106 minutes/1hour 46 minutes

Step-by-step explanation:

45+ 61 :106

Find the circumference of this circle
using 3 for TT.
C ~ [?]
24
C = id

Answers

Answer:

72

Step-by-step explanation:

The diameter is 24

pi is approximated by 3

The circumference is given by

C = pi *d

   = 3 * 24

    = 72

What are the zeros of the polynomial function f(x) = x3 − 10x2 + 24x?

Answers

Answer:

x=0  x=4  x=6

Step-by-step explanation:

f(x)=x^3 − 10x^2 + 24x

Factor out the greatest common factor

f(x)=x(x^2 − 10x + 24)

Factor inside the parentheses

f(x)=x(x-4)(x-6)

Setting equal to zero

0 = x(x-4)(x-6)

Using the zero product property

x=0  x-4 = 0   x-6 =0

x=0  x=4  x=6

(x2 - 41)2 + (yz - Yı) to the find the length of the segment
62. Use the distance formula d =
from (6,0) and (-5, 4).

Answers

Answer:

√137

Step-by-step explanation:

[tex](x_1, y_1) = (6, 0)\\(x_2, y_2) = (-5, 4)\\\\d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\d = \sqrt{(-5-6)^2+(4-0)^2}\\ d = \sqrt{(-11)^2+(4)^2}\\ d = \sqrt{121+16}\\ d = \sqrt{137}\: or \:11.7[/tex]

show that (x-1) is a factor of x¹⁰-1​

Answers

Answer:

The answer is 0 X=1

1. x10-1

(1)10-1

1-1

=0

2. x11-1

(1)11-1

1-1

=0

Step-by-step explanation:

x^10 - 1 = (x^5+1)(x^5-1)
= (x^5+1)(x)(x^2+1)(x^2-1)
= (x^5+1)(x)(x^2+1)(x+1)(x-1)

See that (x-1) is one of the factors after the factorization. This proves it.
Whew

How to find the area of the shaded region

Answers

Answer:

61 cm^2.

See below.

Step-by-step explanation:

9(p−4)=−18 p= I am not great at math, please explain just a little bit

Answers

Answer:

[tex]\large \boxed{{p=2}}[/tex]

Step-by-step explanation:

9(p-4) = -18

Expand brackets.

9p -36 = -18

Add 36 on both sides.

9p -36 + 36 = -18 + 36

9p = 18

Divide both sides by 9.

(9p)/9 = 18/9

p = 2

Answer:

p = 2

Step-by-step explanation:

9(p - 4) = -18

You are solving for the variable, p. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and =

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, divide 9 from both sides:

(9(p - 4))/9 = (-18)/9

(p - 4) = -18/9

p - 4 = -2

Isolate the variable, p. Add 4 to both sides:

p - 4 (+4) = -2 (+4)

p = -2 + 4

p = 4 - 2

p = 2

Check. Plug in 2 for p in the equation:

9(p - 4) = -18

9(2 - 4) = -18

9(-2) = - 18

-18 = -18.

~

Identify the cross section shown

circle
rectangle
triangl
trapezoid

Answers

It is a rectangle

The shaded thing

Must click thanks and mark brainliest

BRAINLIEST graphing question

Answers

Answer:

Step-by-step explanation:

the area of a square is given by s2 and the perimeter is given by 4s, where s is the side length of the square if the side length of a square is 4 inches its area is ... square inches and its perimeter is ... inches

Answers

Answer:

Area = s² = 4² = 16 sq. In.

Perimeter = 4s = 4(4) = 16 in.

YA'LL PLEASE PLEASE PLEASE PLEASE PLEASE HELP MEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Find the equation of the line passing through (1, 5) and parallel to y = 3x – 1.

please show how you got it so I can see if the answer makes sense!!!!

Answers

Answer: y= 3x+2

Step-by-step explanation:

because....

The slope-intercept form is y= mx +b, where m is the slope and b is the y-intercept.Use the slope 3 and a given point (1,5) to substitute for  and  in the point-slope form .

y-(5)= 3*(x-(1))

After simplifying it,

the equation is going to be y= 3x+2.

* Hopefully this helps:) Mark me the branliest!

In a mathematics class, half of the students scored 89 on an achievement test. With the exception of a few students who scored 48, the remaining students scored 79. Which of the following statements is true about the distribution of scores?
A. The mean is less than the median.
B. The mean and the median are the same.
C. The mean is greater than the mode.
D. The mean is greater than the median.

Answers

Answer:

A. The mean is less than the median.

Step-by-step explanation:

Half the students scored 89.  The next highest score is 79.  So the median is (79 + 89) / 2 = 84.

A few students scored 48, so the mean is slightly lower than the mean of 79 and 89.

Therefore, the mean is less than the median.

Answer:

A. The mean is less than the median.

Step-by-step explanation:

Say that half the students answered 79, and the rest 89.

We'd have a distribution something like this:

79 79 79  89 89 89

The median is in the smack middle. Since we have an even number of scores, the median would be the number between the 2 middle numbers. Here, that's 79 and 89. Thus, the median is 84.

The mean is the "average" of all values. Since we have an equal number of 79s to 89s, the mean would also be in the middle of those values (balancing an equal number on both sides). So, the mean would also be 84.

HOWEVER, we have an unspecified number of 48's.

The distribution looks something like

48 79 79 89 89 89

The median is still the same, smack middle between the 2 values in the middle. 84.

But the mean has changed. We have smaller values on the left. The mean is brought down by these 48 values. It doesn't matter how many, the fact that we have at least 1 will bring the mean, the average, down.

if A=(p,q,r) write all possiblesubsets of A​

Answers

Answer:

Given, A={p,q,r}.

Now, possible subsets of A are ,{p},{q},(r) {p,q}.

(q,r) (p,r) (p,q,r)

Find the distance between the two points (-4,4) and (1,0)

Answers

Answer:

The answer is

[tex] \sqrt{41} \: \: \: units[/tex]

Step-by-step explanation:

The distance between two points can be found by

[tex] \sqrt{ ({x _{1} - x_{2} })^{2} + ({y_{1} } - y_{2} )^{2} } [/tex]

where

( x1 , y1) and ( x2 , y2) are the points

So the distance between (-4,4) and (1,0) is

[tex] \sqrt{( { - 4 - 1})^{2} + ( {4 - 0})^{2} } [/tex][tex] = \sqrt{ ({ - 5})^{2} + {4}^{2} } [/tex][tex] = \sqrt{25 + 16} [/tex]

We have the final answer as

[tex] \sqrt{41} \: \: \: units[/tex]

Hope this helps you

2/3 of a number is 20 less than the original number.find the number

Answers

40 40 50 hersssdxddasd

Pleaseeeeee

Within 9 hours, the number of stars seen went from 190 to 33 as the sun started to rise. Find out how many stars are getting hidden by the sunlight each hour.

Answers

Answer:

Approximately 17

Step-by-step explanation:

Number of starts getting hidden in 9 hours = 190 - 33

= 157

Therefore the nun of starts getting hidden in 9 hours is 157

9 hours = 157 stars

1 hours = x

Cross multiply

9 × x = 157 × 1

9x = 157

Divide both sides by 9

x = 157 ÷ 9

x = 17.4

Therefore 17.4 stars are getting hidden every hour.

Answer:

17 4/9 stars per hour

Step-by-step explanation:

First find the decrease in the number of stars

190-33 = 157

Divide by the hours that passed

157/9

17 4/9 stars per hour

Please help with this

Find the area of the shaded regions.

Answers

Answer:

The area of the shaded region is 7π square centimeters.

Step-by-step explanation:

Note that Circle B has a radius of 3 cm, and the two smaller circles, Circles O and C, both have a radius of 1 cm.

The area of a circle is given by:

[tex]\displaystyle A = \pi r^2[/tex]

Therefore, the area of Circle B, the entire circle, is:

[tex]\displaystyle \begin{aligned} A_B &= \pi (3)^2 \\ &= 9\pi \end{aligned}[/tex]

The area of Circle O is:

[tex]\displaystyle \begin{aligned} A_O &= \pi (1)^2 \\ &= \pi \end{aligned}[/tex]

And likewise, the area of Circle C is:

[tex]\displaystyle \begin{aligned} A_C &= \pi (1)^2 \\ &= \pi \end{aligned}[/tex]

The area of the shaded area is the area of the Circle B subtracted by the area of Circles O and C. Hence:

[tex]\displaystyle A_\text{shaded} =A_B - \left(A_ O + A_ C\right)[/tex]

Substitute and evaluate:

[tex]\displaystyle \begin{aligned} A_\text{shaded} &= (9\pi ) - (\pi + \pi) \\ &= 9\pi - 2\pi \\\ &= 7\pi \end{aligned}[/tex]

The area of the shaded region is 7π square centimeters.

I need help ASAP!!!Please explain how you got your answer

Answers

Answer:

See the pic below.

Step-by-step explanation:

I erased the incorrect answers and filled in the correct answers with numbers.

a laptop computer is 1.05 centimeters thick

Answers

Answer:

yes and?

Step-by-step explanation:

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