Use trigonometry to solve for x. Round to the nearest tenth.

Use Trigonometry To Solve For X. Round To The Nearest Tenth.

Answers

Answer 1

Answer

12

Step-by-step explanation:

You need to use cosine because the side length needed is adjacent and you have the hypotenuse.Set up a proportion of "cos23 = x/13" and solve by cross multiplying. Then just round.


Related Questions

the starting point.. On a number line it is 0

Answers

Answer:

yes that is correct...

Step-by-step explanation:

yes! the starting point is zero if you are using positive numbers!

The production of a certain pist Increase from
50,000 units to 89000 units in 5 years . If
the production increase uniforormuly - What
Increase in production:
is the Annual​

Answers

9514 1404 393

Answer:

  7800 units per year

Step-by-step explanation:

The increase over 5 years is ...

  89,000 -50,000 = 39,000 . . . . units

Then the increase per year is ...

  (39,000 units)/(5 years) = 7,800 units/year

Please Hurry
What is 0.857142857143 as a Fraction? (Please simplify if possible.)

Answers

Answer: I think it's (0.857142857143 as a fraction equals 857142857143/1000000000000)

Step-by-step explanation:

0.857142857143 as a fraction is 7.714285714287/9, which cannot be simplified further.

What is decimal?

Decimals are numbers that have two components, a whole number component and a fractional component, which are separated by a decimal point.

To convert 0.857142857143 to a fraction:

Let x = 0.857142857143

Then 10x = 8.57142857143

Subtracting x from 10x gives:

10x - x = 8.57142857143 - 0.857142857143

Simplifying:

9x = 7.714285714287

Dividing by 9:

x = 0.857142857143 = 7.714285714287/9

Therefore, 0.857142857143 as a fraction is 7.714285714287/9, which cannot be simplified further.

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simplify ⁴/7÷(3⅓+2⅘)​

Answers

I’m pretty sutures it’s 0.01396 but I might be wrong

Ms.Heinen's desk is 3 feet by 2 feet. What is the perimeter of her desk?

Answers

Answer: 10 ft

Step-by-step explanation:

Her desk is a rectangle

Perimeter of a rectangle: 2 ( l + b )

l = 3 ft

b = 2 ft

2 ( 3 + 2 ) = 2 (5) = 10

The perimeter of her desk is 10 ft.

Write an equation for the nth term of the arithmetic sequence 37, 29, 21, 13, ....

An equation for the nth term of the arithmetic sequence is an

Answers

Answer:

n= 37 -8n

the first n is the end result, the second in the equation is the __ number, the nth number

Step-by-step explanation:

What is the volume of the paper weight ? Please help !!

Answers

Answer:

144 inches squared

Find the surface area Find the total surface area of the rectangular prism. 6 1/2 cm 3 3 cm. Please help fast​

Answers

Step-by-step explanation:

(3•2)+(3•2)+(6.5•3)+(6.5•3)+(2•6.5)+(2•6.5)

=77

Select all that apply
To which sets does -7/8 belong?
irrational numbers
integers
real numbers
rational numbers
whole numbers
natural numbers

Answers

Rational and Real Numbers

unit rate for $128 for food for 16 dogs please its friday i need this

Answers

Answer:

Step-by-step explanation:

Unit rate = 128 ÷ 16 = 8$

Answer:

$8 if it's wrong i'm sorry.

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Eye Color
Hair Color Blue Gray Green Brown Marginal Total
Blond 42 5 21 10 78
Red 12 22 19 12 65
Brown 22 5 12 34 73
Black 9 3 11 64 87
Marginal Total 85 35 63 120 303

As part of a class project, a university student surveyed students in the cafeteria to look for a relationship between the students’ eye color and hair color. The table contains the survey results.

The percentage of the sample population with brown eyes and black hair is larger than the percentage of the sample population with blue eyes and black hair by
(answer)
percentage points. (Round off your answer to the nearest whole number.)

Answers

Answer:

18%

Step-by-step explanation:

Divide 64/303.

Divide 9/303.

Subtract the answers and you'll get 18%.

The percentage of the sample population with brown eyes and black hair is larger than the percentage of the sample population with blue eyes and black hair by 18.25%

What is the percentage?

In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%"

Given here, according to the survey, the population with Brown eyes & black hair and Blue eyes and black hair  is 64 and 9 respectively

Also, the marginal total is equal to 303

therefore, the percentages of the two groups are

Brown eyes & black hair =64/303 × 100

                                         = 21.12%

similarly we can calculate  Blue eyes and black hair = 9/303 × 100

                                                                                      = 2.97%

Hence the difference is  21.22% - 2.97% =  18.25% (approx)

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Select the correct answer


Gavin collects a certain type of seashell. He has 160 seashells. The seashells' weights are distributed normally, with a mean of 120 grams and a

standard deviation of 26 grams.


How many of the seashells weigh at least 68 grams?

A 134

В.152

C.156

D. 109

Answers

Answer: C.156

Step-by-step explanation:

Given: Total seashells = 160

mean = 120

population standard deviation = 26 grams

The probability that the seashells weigh at least 68 grams :-'

[tex]P(X\geq68) =P(\dfrac{x-\mu}{\sigma}\geq\dfrac{68-120}{26})\\\\=P(z\geq-2)\\\\=P(z<2)\ \ \ [P(Z\geq-z)=P(Z<z)]\\\\= 0.9772\ \ \ [\text{By p-value table}][/tex]

Total seashells weigh at least 68 grams = 0.9772 x 160 = 156.352≈ 156

Hence, the correct option is C.156

Answer:

156/C

Step-by-step explanation:

#platolivesmatter

Ms. Davis is doing an activity with her statistics students where she gives them a 20-question multiple choice test, and they know none of the answers. Students need to guess on every question, and each question has 5 possible choices, 1 of which is correct. What are the mean and standard deviation of the number of questions that each student gets correct?

Answers

Answer:

Average: 4

Standard Deviation: 0

Step-by-step explanation:

Because we don't know how each student did we are going to assume that they all got 20% of the questions right

20% of 20 is 4

Which means that we can assume each student got 4 questions correct

Because all entries are the same the standard deviation is 0

NEED HELP FOR HOMEWORK, WILL NAME BRAINLIEST !!

Answers

Answer:

1) 4/15

2) 15/15?

Step-by-step explanation:

1) 3/5-1/3

  9/15-5/15

  4/15

2) 15/15?

 

 

PLEASE!!!!!!!The adjoining figure shows two circles with the same center. The

radius of the larger circle is 10 cm and the radius of the smaller circle

is 4 cm. Find the area of the shaded region.​

Answers

Answer:

[tex]\boxed{\boxed{\pink{\sf \leadsto Hence \ the \ area \ of \ shaded \ region \ is 264 cm^2}}}[/tex]

Step-by-step explanation:

Here , two circles are given which are concentric. The radius of larger circle is 10cm and that of smaller circle is 4cm . And we need to find thelarea of shaded region.

From the figure it's clear that the area of shaded region will be the difference of areas of two circles.

Let the,

Radius of smaller circle be r .Radius of smaller circle be r .Area of shaded region be [tex]\bf Area_{shaded}[/tex]

[tex]\bf \implies Area_{Shaded}= Area_{bigger}-Area_{smaller} \\\\\bf\implies Area_{Shaded} = \pi R^2 - \pi r^2 \\\\\bf\implies Area_{shaded} = \pi ( R^2-r^2) \\\\\bf\implies Area_{shaded} = \pi [ (10cm)^2 - (4cm)^2] \\\\\bf\implies Area_{shaded} = \pi [ 100cm^2-16cm^2] \\\\\bf\implies Area_{shaded} = \pi \times 84cm^2 \\\\\bf\implies Area_{shaded} = \dfrac{22}{7}\times 84cm^2 \\\\\bf\implies \boxed{\red{\bf Area_{shaded} = 264 cm^2 }}[/tex]

Hence the area of the shaded region is 264 cm².

Deandre is going for a run. He runs at a speed of 6.4 miles per hour for two hours. For how many miles does he run?

Answers

You just multiply 6.4 by how many hours, and that’s your answer. So it’s 12.8 miles in 2 hours

Plz help
!!!!!!!!!!!!!!!!!

Answers

Answer:

The car will travel  525 miles on 15 gallons of gas.

Step-by-step explanation:

Given that car can travel 35 miles using 1 Gallon of gas.

so

Unit rate = 35 miles per gallon

Thus,

The number of miles a car can travel in 15 gallons = 15 × 35

                                                                                    = 525 miles

Thus, the car will travel  525 miles on 15 gallons of gas.

the quotient of a number and -5 increased by one is at most 7

Answers

Answer:

the quotient of a number (any letter of the alphabet) n(-5) = nx5 = 7

Step-by-step explanation:

prove that√P is irrational for any prime number P​

Answers

Answer:

Step-by-step explanation:

I’m not sure if this is super accurate, but since P is prime, the only factors it has is 1 and itself, meaning that the square root of it will be irrational

The diagram shows a small weight is swinging backwards and forwards on the end of a string. The time for one swing is proportional to the square root of the length of the string. If the length is 64 cm, the time of one swing is 1.6 s. Work out the time of one swing if the length is 144 cm.

Answers

Answer:

2.4 seconds

Step-by-step explanation:

It is given that,

The time for one swing is proportional to the square root of the length of the string.

[tex]T\propto \sqrt{L}[/tex]

or

[tex]\dfrac{T_1}{T_2}=\sqrt{\dfrac{L_1}{L_2}}[/tex] ....(1)

We have,

L₁ = 64 cm, T₁ = 1.6 s, L₂ = 144 cm, T₂ = ?

Substitute all the values in formula (1).

[tex]T_2=\dfrac{T_1}{\sqrt{\dfrac{L_1}{L_2}}}\\\\T_2=\dfrac{1.6}{\sqrt{\dfrac{64}{144}}}\\\\T_2=2.4\ s[/tex]

So, the new time period of the simple pendulum is 2.4 seconds.

814
100,000
If the probability that a person will die in the next year is
probability that the person will not die in the next year?
what is the

Answers

Answer:

0.99186 probability that the person will not die in the next year, and the correct option is A.

Step-by-step explanation:

Dying and not dying in that year are complementary events, that is, one of them will happen. This means that the sum of their probabilities is 100% = 1.

The probability of dying is:

[tex]p = \frac{814}{100000} = 0.00814[/tex]

So the probability of not dying is given by:

[tex]P = 1-0.00814 = 0.99186[/tex]

0.99186 probability that the person will not die in the next year, and the correct option is A.

A family discount card offers deals for the cinema. The card states:
The cost of an adult is $10. A child’s ticket is $6.

FAMILY DISCOUNT CARD
- 45% off all adults tickets
- Children save 2/5 off of full price tickets

a) How much will it cost to buy 2 adult tickets and children’s tickets?

b) The cost of a family discount card is $40 per year. How many times in the same year would 2 adults and 3 children need to go before you start to save
money on the cost of the card? 7m

Answers

Answer:

a)£21.80

b) 3 trips

Step-by-step explanation:

The cost of an adult is $10.

A child’s ticket is $6.

FAMILY DISCOUNT CARD

- 45% off all adults tickets

- Children save 2/5 off of full price tickets

a) How much will it cost to buy 2 adult tickets and children’s tickets?

(a)

Adults: 2 × £10 = £20

(45 ÷ 100) x £20 = £9

£20 - £9 = £11

Children: 3 × £6 = £18

2 /5 of £18 = £7.20

£18 - £7.20 = £10.80

Total: £11 + £10.80 = £21.80

b) The cost of a family discount card is $40 per year. How many times in the same year would 2 adults and 3 children need to go before you start to savemoney on the cost of the card?

(b) Cost without discount = £20 + £18 = £38b)

No card

1 trip

1 × £38 = £38

2 × £38 = £76

3 × £ 38 = £114

With card

£40 + (1 × £21.80) = £61.80

2 trips 2 × £38 = £76 £40 + (2 × £21.80) = £83.60

3 trips 3 x £38 = £114 £40 + (3 × £21.80) = £105.40

3 trips before the discount card starts being cheaper than regular price

Find x. I WILL GIVE BRAINLIEST. Please answer asap.

Answers

Answer:

70°

Step-by-step explanation:

180-105=75

35+75=110

180-110=70

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

of 6, answer these questions:

Part A: What is the standard deviation of the sampling distribution of x? Show your

work. (5 points)

Part B: What does the sample size need to be if you want the standard deviation of

the sampling distribution of x to be 0.325? Show your work.

Answers

Answer:

A) standard deviation of the sampling distribution of x is 0.5307

B) the sample size needs to be 16, if you want the standard deviation of   the sampling distribution of x to be 0.325

Step-by-step explanation:

Given that;

Population mean μ = 53.7

standard deviation σ = 1.3

sample size n = 6

Sampling distribution of x" follows Normal distribution

x" η N ( μ_x" =μ, σ_x"= σ/√n)

A)

standard deviation of the sampling distribution of x

⇒X" = σ_x" = σ/√n

we substitute

= 1.3/√6

= 1.3 / 2.4494

= 0.5307

Therefore standard deviation of the sampling distribution of x is 0.5307

B)

if σ_x" = 0.325

⇒  σ/√n = 0.325

we substitute in the value of σ

⇒ 1.3/√n = 0.325

√n = 1.3 / 0.325

√n = 4

n = 4²

n = 16

Therefore the sample size needs to be 16, if you want the standard deviation of   the sampling distribution of x to be 0.325

Use quadratic regression to find the equation of the parabola going through these 3 points.

(-5,13) (0,8) (2,48)

y=[?]x^2+[?]x+[?]

Answers

Answer:

3 + 14 + 8

Step-by-step explanation:

7a=21

a=21

The equation of the parabola that goes through the three points is:

y = 3x² + 14x + 8

The points are given as:

(-5,13), (0,8), (2,48)

To find the equation of the parabola that goes through the given three points (-5,13), (0,8), and (2,48) using quadratic regression, we need to fit a quadratic equation of the form y = ax² + bx + c to these data points.

Using the three points, we can set up a system of equations:

13 = a(-5)² + b(-5) + c

8 = a(0)² + b(0) + c

48 = a(2)² + b(2) + c

Simplifying these equations, we have:

25a - 5b + c = 13

c = 8

4a + 2b + c = 48

Solving this system of equations, we find that a = 3 and b = 14, and c = 8.

Therefore, the equation of the parabola that goes through the three points is:

y = 3x² + 14x + 8

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A city garden club is planting a square garden. They drive pegs into the ground at each corner and tie strings between each pair. The pegs are spaced so that WX ≅ XY ≅ YZ ≅ ZW . How can the garden club use the diagonal strings to verify that the garden is a square? Complete the explanation.

e23

Because both pairs of opposite sides of the quadrilateral garden are congruent, the garden is a parallelogram. The garden is a
(select)
, because all four sides are congruent. If it can be proven that it is also a
(select)
, then the garden is a square. So, if the diagonals
(select)
, then the garden is a square. The club members can measure the lengths of the diagonals.

Answers

Answer:

first blank is "rhombus"

second blank is "rectangle"

third blank is "are congruent"

Step-by-step explanation:

WORKSHEET-2
7. The natio of the cincumference of the diameter is
2. The distance around a circular region is known as it's
3. Find the area and circumference of circle whose radius is 35 cm
Сло
=2
= 22
Cincumference
AREA​

Answers

Answer:

1. [tex]\frac{C}{D}[/tex] = 3.143

2. Circumference

3. Area of the circle is 3850 [tex]cm^{2}[/tex].

   ii. Circumference of the circle is 220 cm.

Step-by-step explanation:

The area, A, and the circumference, c, of a circle can be determined respectively by:

A = [tex]\pi[/tex][tex]r^{2}[/tex]

C = 2[tex]\pi[/tex]r

where r is the radius of the circle.

1. the ratio of the circumference and diameter, D, of a circle is:

r = [tex]\frac{D}{2}[/tex]

so that,

C = 2[tex]\pi[/tex][tex]\frac{D}{2}[/tex]

C = [tex]\pi[/tex]D

[tex]\frac{C}{D}[/tex] = [tex]\pi[/tex]

   = [tex]\frac{22}{7}[/tex]

   = 3.143

2. The distance around a circular region is known as it's circumference.

3. Given a circle of radius 35 cm, then:

A = [tex]\pi[/tex][tex]r^{2}[/tex]

   = [tex]\frac{22}{7}[/tex] x [tex](35)^{2}[/tex]

   = [tex]\frac{22}{7}[/tex] x 1225

   = 22 x 175

A = 3850

Area of the circle is 3850 [tex]cm^{2}[/tex].

C = 2[tex]\pi[/tex]r

   = 2 x [tex]\frac{22}{7}[/tex] x 35

   = 2 x 22 x 5

   = 220

C = 220 cm

Circumference of the circle is 220 cm.

3/5 (divide) 1/2

1.3/10

2.1 1/10

3.1 1/5

Answers

Answer:

1 - 0.3 (3/10)

2 - 1.1 (11/10)

3 - 2.2 (11/5)

For 3/5 (divide) 1/2, the answer is 1.2

Step-by-step-explanation:

3/5 = 0.6

1/2 = 0.5

0.6 / 0.5 = 1.2

A person standing 248 feet from the base of a church observed the angle of elevation to the

church's steeple to be 43. How tall is the church? (Give your answer to the nearest whole number)

How tall is the church?

Answers

Answer:

h = 231 feet

Step-by-step explanation:

Given that,

A person standing 248 feet from the base of a church, x = 248 feet

The angle of elevation to the church's steeple to be 43°.

We need to find the tall of the church. Let the length of the church is h. Using trigonometry to find it.

[tex]\tan\theta=\dfrac{P}{B}\\\\\tan\theta=\dfrac{h}{x}\\\\h=x\tan\theta\\\\h=248\times \tan(43)\\\\=231.26\ \text{feet}[/tex]

or

h = 231 feet

So, the height of the church is 231 feet.

3x+8=35 Show your work

Answers

Answer:

x=9

Step-by-step explanation:

So first subtract 8 on both Sides

3x+8-8=35-8

3x=27

Now divide 3 on both sides to isolate the variable x

x=9

So x=9

Answer:

so to do this you need to subtract 8 from 35 to get 27 now do 27 divide by 3 to get 9

3x+8=35

3x=35 - 8 = 27

3x = 27

3x divided by 27 = 9

Step-by-step explanation:

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