Use the Law of Sines and/or the Law of Cosines to solve each triangle. Round to the Nearest tenth when necessary

(Unit 8: Right Triangles & Trigonometry, Homework 9: Law of Sines & Cosines: + Applications)​

Use The Law Of Sines And/or The Law Of Cosines To Solve Each Triangle. Round To The Nearest Tenth When

Answers

Answer 1

Answer:

∠TSR= 48°

∠RTS = 107°  

∠TRS = 25°

Step-by-step explanation:

As we know in any triangles,

a, b and c are sidesC is the angle opposite side c

We can apply The Law of Cosines , which is:

[tex]c^{2}[/tex] = [tex]a^{2}[/tex] + [tex]b^{2}[/tex]  − 2ab cos(C)

In this situation we have:

RT = a = 11TS = b = 6SR = c = 14

Apply The Law of Cosines to find the angle of TRS

<=> [tex]6^{2} = 11^{2} + 14^{2} - 2*11*14*cos(TRS)[/tex]

<=> cos(TRS ) = ([tex]11^{2} + 14^{2} - 6^{2}[/tex]) / 2*11*14

<=> cos(TRS ) = 0.91

<=> ∠TRS  = 25°

Apply The Law of Cosines to find the angle of RTS

<=> [tex]14^{2} = 11^{2} + 6^{2} - 2*11*6*cos(RTS)[/tex]

<=> cos(RTS) =  ([tex]11^{2} + 6^{2} - 14^{2}[/tex]) / 2*11*6

<=> cos(RTS) = -0.29

<=> ∠RTS = = 107°  

So we can find the measure of angle TSR

∠TSR= 180° - 107°  - 25°

∠TSR= 48°

Answer 2

Using cosine law or sin law the angles of the triangle is as follows:

∠T = 107.2°

∠S = 48.6°

∠R = 24.2°

Using cosine rule,

Cosine rulet² = r² + s² - 2rs cos T

Therefore,

14² = 6² + 11²- 2 × 6 × 11 cos T

196 - 36 - 121 = -132 cos T

cost T = 39 / - 132

T = cos⁻¹ -0.29545454545

T = 107.184793175

T = 107.2°

Sine rule

Therefore, let's find angle S using sine law

s / sin S = t / sin T

11  / sin S = 14 / sin 107.2

11 sin 107.2 = 14 sin S

sin S = 10.5080619833 / 14

S = sin ⁻¹ 0.75057585595

S = 48.6397771973

S = 48.6°

R = 18 0 - 48.6 - 107.2 = 24.2

R = 24.2°

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Related Questions

5g - 10 = -25
please help!​

Answers

Answer:

g = -3

Step-by-step explanation:

5g - 10 = -25

5g = -25 + 10

5g = -15

g = -15/5

g = -3

hope it helps!

Answer:

g = - 3

Step-by-step explanation:

5g - 10 = - 25

5g = - 25 + 10

5g = - 15

g = - 15 : 5

g = - 3

Elena bought a backpacking tent to take with her on hiking trips.
She needs to buy a rain proof tarp for the tent that will cover all 4 sides, as well as protect the ground underneath. Which size tarp should she purchase? *
1 point
a) X-Small: 16 ft²
b) Small: 34 ft²
c) Medium: 88 ft²
d) Large: 104 ft²
e) X-Large: 144 ft²

If the tarp that she buys does not work and the tent fills up completely with water, how much water would it take to fill the tent, if the tent is 8.75 ft tall? *
1 point
a) 140 ft³
b) 144 ft³
c) 48 ft³
d) 46.7 ft³
e) 36 ft³

Answers

Answer:

Question 1 = c) Medium: 88 ft²

Question 2 = d) 46.7 ft³

Step-by-step explanation:

Question 1

We would be solving this question by finding the surface area of the tent. The shape of the tent is a square based pyramid.

The surface area of a square based pyramid(tent) =

a² + 2ah

Where in the diagram,

a = base length = 4 ft

h = height of the pyramid (tent ) = 9ft

Surface area = 4² + 2 × 4 × 9

= 16 + 72

= 88ft²

Therefore, the size tarp should she purchase is Medium: 88 ft²

Question 2

For question 2, from the attached diagram, we can see that the diagram is a square based pyramid.

To calculate the amount of water that would fill the square based pyramid, we would have to find the Volume of the tent(square based pyramid).

The formula for the Volume of the tent(square based pyramid) = 1/3(a²h)

Where a = base edge

h = height of the pyramid.

From the diagram,

a = base edge => 4ft.

From the question,

h = height of the tent is given as how tall the tent is = 8.75ft.

Therefore, 1/3(a²h)

1/3 × (4ft)²× 8.75ft

= 46.67ft³

Approximately = 46.7ft³

Therefore, the amount of water it would it take to fill the tent, if the tent is 8.75 ft tall is 46.7ft³

What is the mode of the following numbers?
1
,
2
,
4
,
6
,
4

Answers

Answer:

4 because mode is always the number that occurs the most. If there were two sixes and two fours, then there would be two modes.

Answer:

4

Step-by-step explanation:

The mode of the data set (a set of distinct values, at least) is the value which appears the most often. In this set, that number is 4.

The equation y minus two-thirds = negative 2 (x minus one-fourth) is written in point-slope form. What is the equation in slope-intercept form? Y = negative 2 x minus StartFraction 1 Over 6 EndFraction y = negative 2 x + StartFraction 7 Over 6 EndFraction y = negative 2 x + StartFraction 5 Over 12 EndFraction y = negative 2 x minus StartFraction 11 Over 12 EndFraction

Answers

Answer:

(B)  [tex]y=-2x+ \dfrac{7}{6}[/tex]

Step-by-step explanation:

Given the point-slope form of the equation of a line below:

[tex]y-\dfrac{2}{3}=-2\left(x- \dfrac{1}{4}\right)[/tex]

We are required to write it in the slope-intercept form, y=mx+c.

[tex]y-\dfrac{2}{3}=-2\left(x- \dfrac{1}{4}\right)\\\\y-\dfrac{2}{3}=-2x+ \dfrac{2}{4}\\\\y=-2x+ \dfrac{2}{4}+\dfrac{2}{3}\\\\y=-2x+ \dfrac{7}{6}[/tex]

The slope intercept form is:

[tex]y=-2x+ \dfrac{7}{6}[/tex]

The correct option is B.

Answer:

b

Step-by-step explanation:

A car is traveling at 65 miles per hour. What happens to the number of miles when the number of hours changes?
VX
O When the number of hours increases, the number of miles decreases.
O When the number of hours increases, the number of miles increases.
O When the number of hours decreases, the number of miles increases
O When the number of hours decreases, the number of miles stays the same.
Mark this and return
Save and Exit
Next
Submit

Answers

Answer: The answer is the second one Letter B.

when the number of hours increases, the number of miles increases

Hope this help You Yo.

Alex saved $65. He has already spent $25. He plans to spend $8 on a movie ticket each month. Which any quality represents the number of movie tickets he can but?

Answers

Answer: 8m+25 ≤ 65

Step-by-step explanation:

Hi, to answer this question we have to write an inequality with the information given:

The product of the number of movie tickets he will buy per month (m) and the price of each ticket (8) plus the already spent money (25) must be less or equal to his savings (65).

Mathematically speaking:

8m+25 ≤ 65

Feel free to ask for more if needed or if you did not understand something.  

The Vega family must pay $1776 each year in property taxes for their home they pay the tax and equal monthly payments your house payment is $948 a month before the text what is your house payment each month with the tax

Answers

Answer:

$1,096.00 per month        

Step-by-step explanation:

Divide 1776 by 12 for one payment per month equals 148.

Add the monthly house payment $948 to the monthly tax payment $148. The total monthly payment due is $1,096.00.

An internet company Randomly selected 50 of his customers and ask them how many hours per week to use the Internet of those surveyed 28 use the Internet more than 15 hours per week based on the data if the company has 800 subscribers how many use more than 15 hours per week

Answers

Answer:

448 subscribers use more than 15 hours per week

Step-by-step explanation:

In this question, we shall be using the proportion of what was gotten from a survey to estimate the number of subscribers that use more than 15 hours per week

From the question, we can see that out of the 50 people surveyed, 28 use more than 15-hours per week based on data

The proportion that thus use 15-hours per week based on data is 28/50

Now to know the number of subscribers out of 800 that use more than 15-hours per week based on data we have ; 28/50 * 800 = 28 * 16 = 448 subscribers

Find the circumference of a circle with radius, r = 19.5m.
Give your answer in terms of pie

Answers

Answer:

39π cm

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

Here r = 19.5, thus

C = 2π × 19.5 = 39π cm

(e) The number of bees spotted in Amelie's garden can also be modeled by the function B(x) = 50√ k + 2x where x is the daily high temperature, in degrees Fahrenheit, and k is a positive constant. When the number of bees spotted is 100, the daily high temperature is increasing at a rate of 2 ◦F per day. According to this model, how quickly is the number of bees changing with respect to time when 100 bees are spotted?

Answers

Answer:

[tex]\frac{dB}{dt}=4[/tex]

Step-by-step explanation:

Derivative indicates rate of change of dependent variable with respect to independent variables. It indicates the slope of a line that is tangent to the curve at the specific point.

Given:

Number of bees is modeled by the function [tex]B(x)=50\sqrt{k}+2x[/tex]

The daily high temperature is increasing at a rate of 2 °F per day when  the number of bees spotted is 100.

To find:

rate of change of number of bees when 100 bees are spotted

Solution:

[tex]B(x)=50\sqrt{k}+2x[/tex]

Differentiate with respect to t,

[tex]\frac{dB}{dt}=0+2(\frac{dx}{dt}) \\\frac{dB}{dt}=2(\frac{dx}{dt}) \\[/tex]

Put [tex](\frac{dx}{dt}) =2[/tex]

[tex]\frac{dB}{dt}=2(2)=4[/tex]

At x = 100, [tex]\frac{dB}{dt}=4[/tex]

How many 1/3 cm cubes can fit in a rectangular prism with a length of 5 1/3 cm, a width of 2/3 cm and a height of 1 1/3 cm. PLEASE REPLY QUICKLY I HAVE TO SUBMIT THIS IN 30 MINUTES

Answers

Answer:

You could fit 48 cubes with side lengths of 1/3 cm inside a rectangular prism with dimensions of 1 cm X 2 2/3 cm X 2/3 cm.

Step-by-step explanation:

Please help me now plz
I will mark you brainliest

Answers

Answer:

theta = 24.4 degrees

Step-by-step explanation:

This is a right triangle.

sin theta = opp/ hyp

sin theta = 33/80

Take the inverse of each side

sin^-1 sin(theta) = sin^-1 (33/80)

theta =24.36197794

To the nearest tenth

theta = 24.4 degrees

what is the factorization of x2 + 2x − 63

Answers

Answer:

(x+9) (x-7)

Step-by-step explanation:

x^2 + 2x − 63

What 2 numbers multiply to -63 and add to 2

9* -7 = -63

9+-7 = 2

(x+9) (x-7)

In a new lottery game, contestants pick 5 numbers (1-9 inclusive) and must guess exactly 3 correct in order to win. What’s the probability of winning this lottery?

Answers

Answer: 0.6%

Step-by-step explanation:

We have a selection of 5 numbers, in those selection we have 3 combinations of 3 consecuitve numbers (because the numbers must be in correct order).

The first 3

The 3 in the middle

the last 3.

So a contestant has 3 combinations were he wins.

Now, the number of possible combinations of the 9 numbers given is:

For the first number we have 9 options.

For the second number we have 8 options (because we already selected one)

For the last number we have 7 options (because we already selected 2 numbers)

Then the number of possible combinations is

10*9*8 = 504

The probabilty of winning will be equal to the number of combinations that the contestant has (3) divided by the total number of combinations, this is:

p = 3/504 = 0.006 or 0.006*100% = 0.6%

Suppose you have the same box with a volume of 400 in^3. And a height of 5 in. You now also know that the box is 8 in. Wide. What is the length of the box?

Answers

Answer:

Step-by-step explanation:

Volume of the box = 400 cubic inches

length * width * height = 400

length * 8 * 5 = 400

length * 40 = 400

length = 400/40

length = 10 inches

Answer:

Step-by-step explanatio

it is C

ahhhhhhhhhh to lazy :(​

Answers

Answer:

28

Step-by-step explanation:

10 - 12^2 ÷(-2)^3

PEMDAS

Exponents first

10-144÷(-8)

Then multiplication and division

10- (-18)

Then add and subtract

10+18

28

Answer:

why don't you answer mine

can someone plzzzzzzz help me
A spinner and two cards are shown below.

Which table correctly identifies the sample space of spinning the spinner and then selecting a card? (5 points)

Group of answer choices

Results of the spin

Card Color Orange Yellow Red
Purple Orange, Purple Yellow, Green Red, Green
Green Green, Green Yellow, Yellow Red, Red

Results of the spin

Card Color Orange Yellow Red
Purple Orange, Green Yellow, Yellow Red, Red
Green Green, Purple Yellow, Green Red, Green

Results of the spin

Card Color Orange Yellow Red
Purple Orange, Purple Yellow, Purple Red, Purple
Green Green, Green Yellow, Yellow Red, Red

Results of the spin

Card Color Orange Yellow Red
Purple Orange, Purple Yellow, Purple Red, Purple
Green Orange, Green Yellow, Green Red, Green

Answers

Answer:

it the last one

Step-by-step explanation:

only the last option has all the possible combinations

Answer:

Sample space:

{Yellow Purple,

Yellow Green,

Orange Purple

Orange Green,

Red Purple,

Red Green}

Randall buys 3 tickets for a concert for 14.50 each. He gives the cashier a $50 bill. How much change does he get?​

Answers

The answer will be $6.50
The answer will be $6.50 because 3 tickets are 14.50

need help
What is the volume of this rectangular prism?
What is the volume of this rectangular prism?

A rectangular prism with a length of 6 and one-fourth foot, width of 14 feet, and height of 3 feet.
A:87 and one-half feet cubed
B:131 and one-fourth feet cubed
C:252 feet cubed
D:262 and one-half feet cubed

Answers

Answer:

252 feet cubed

hope this helps!

Step-by-step explanation:

answer : 252 feet





explaination : i just did this and got it right

Line d has a slope of –7 4 . Line e is perpendicular to d . What is the slope of line e ? Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

Final answer:

The slope of line e, which is perpendicular to line d with a slope of -7/4, is 4/7.

Explanation:

The slope of line d is -7/4. To find the slope of a line perpendicular to d, we use the property that the product of the slopes of two perpendicular lines is -1. So, the slope of line e is the negative reciprocal of -7/4.

To find the negative reciprocal, we find the reciprocal by flipping the fraction and then negate it by changing the sign. Therefore, the slope of line e is 4/7.

What’s the distance between 120 and -50 on a number line ?

Answers

Answer:

170

Step-by-step explanation:

The distance between 120 and -50 on a number line is equal to 170.

What is a number line?

In Mathematics and Euclidean Geometry, a number line is a type of graph that is composed of a graduated straight line, which typically comprises both negative and positive numerical values that are located at equal intervals along its length.

This ultimately implies that, every number line would primarily increase in numerical value towards the right from zero (0) and decrease in numerical value towards the left from zero (0).

Based on the information provided above, we would determine the distance between the two numerical values 120 and -50 by using the number line as follows:

x = 120 - (-50)

x = 120 + 50

x = 170.

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Find the whole.
25​% of what number is 70​?

Answers

Answer:280

Step-by-step explanation:

25% of x = 70

x= 280

The answer should be 280

James and Reggie both collect old coins. Together, they have a total of 60 coins. If James would agree to give 1/4 of his coins to Reggie, they would then have exactly the same number of coins. How many more cons does James have (compared to the number of coins Reggie has)?

Answers

Answer:

James has 20 more coins than Reggie

Step-by-step explanation:

Given:

Total number of coins with James and Reggie = 60

If James would agree to give 1/4 of his coins to Reggie, they would then have exactly the same number of coins

To find: number of coins with James and Reggie

Solution:

Let x denote number of coins with James and y denote number of coins with Reggie.

According to question,

[tex]x+y=60\\x-\frac{x}{4} =y+\frac{x}{4} \\x-y=\frac{2x}{4} \\x=2y[/tex]

Put [tex]x=2y[/tex] in [tex]x+y=60[/tex]

[tex]2y+y=60\\3y=60\\y=\frac{60}{3}=20\\ x=2y=2(20)=40[/tex]

So,

number of coins with James = 40

number of coins with Reggie = 20

James has 20 more coins than Reggie

Anika buys a pair of shin guards for $8.58 and several pairs of soccer socks for $4.29 per pair. If she spends $25.74 before taxes, how many pairs of socks does Anika buy?

Answers

Answer:

4

Step-by-step explanation:

easier answer

The product of 12 and k is 84. Solve for k

Answers

Answer:

k=7

Step-by-step explanation

This is the same as 12 x k = 84. To solve, put it into a division problem which is 84 divided by 12. 84 divided by 12 is 7.

A circle of a certain radius has an area which is numerically 5 times the value of the circumference. What is the radius of the circle?

Answers

We have been given that a circle of a certain radius has an area which is numerically 5 times the value of the circumference. We are asked to find the radius of the circle.

We know that area of circle with a radius of r units is [tex]\pi r^2[/tex].

We know that circumference of a circle is [tex]2\pi r[/tex].

5 times the value of circumference would be [tex]5(2\pi r)=10\pi r[/tex].

Now we will equate 5 times circumference with area as:

[tex]\pi r^2 = 10\pi r[/tex]

Let us solve for r.

[tex]\pi r\cdot r = 10\pi r[/tex]

[tex]\frac{\pi r\cdot r}{\pi r}=\frac{10\pi r}{\pi r}[/tex]

[tex]r=10[/tex]

Therefore, the radius of the circle would be 10 units.

Which expressions are equivalent to -56z + 28.
A. 1/2 *(-28z + 14
B. (-1.4z+0.7) *40
C. (14 -7z) *(-4)
D.(8z - 4) (-7)
E. -2(-28z-14)

There are 2 right answers. Plz help!

Answers

The expressions that are equivalent to -56z + 28 are B. (-1.4z+0.7) * 40 and D.(8z - 4) * (-7), as they both simplify the given expression.

You are looking to find expressions that are equivalent to -56z + 28. Let's simplify each of the given options:

A. 1/2 *(-28z + 14) simplifies to -14z + 7, so this is not equivalent to -56z + 28.

B. (-1.4z+0.7) * 40 simplifies to -56z + 28, which is equivalent.

C. (14 -7z) *(-4) simplifies to -56z + 56, which is not equivalent to -56z + 28.

D.(8z - 4) * (-7) simplifies to -56z + 28, which is equivalent.

E. -2(-28z-14) simplifies to 56z + 28, which is not equivalent since the terms have opposite signs.

The equivalent expressions to -56z + 28 are options B and D.

Rearrange the equation so xxx is the independent variable.

y+6=5(x-4)y+6=5(x−4)y, plus, 6, equals, 5, left parenthesis, x, minus, 4, right parenthesis

y=

Answers

The equation is rearranged so that \(y\) is expressed in terms of[tex]\(x\): y= 5x - 26[/tex]

To rearrange the given equation so that x is the independent variable, you need to solve for y. Here's how you can do it step by step:

1. Start with the given equation:

[tex]\[y + 6 = 5(x - 4)\][/tex]

2. Expand the right side of the equation:

[tex]\[y + 6 = 5x - 20\][/tex]

3. Move the constant term (6) to the right side by subtracting 6 from both sides:

[tex]\[y = 5x - 20 - 6\]\\y = 5x - 26\][/tex]

Now, the equation is rearranged so that \(y\) is expressed in terms of[tex]\(x\): y= 5x - 26[/tex]

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The Thompson family borrowed $120,000
to buy a house. Over thirty years, they had
to repay 230% of what they borrowed. Find
the total cost of the house.

Answers

Answer:

27,600

Step-by-step explanation:

Find the Mean Absolute Deviation: 5,

11, 2, 7, 16. The Mean is 8.2

4.2

3.2.

2.8

1.2

Answers

Answer:

4.24

Step-by-step explanation:

It is hard to explain sorry if you need it

The mean absolute deviation of the given values is 4.24

Given the values :

5, 11, 2, 7, 16

Mean = 8.2

The mean absolute deviation = Σ|x - mean| ÷ n

n = number of observations

x = observations

Mean absolute deviation :

(|5 - 8.2| + |11 - 8.2| + |2 - 8.2| + |7 - 8.2| + |16 - 8.2|) ÷ 521.2 ÷ 5 = 4.24

Therefore, the mean absolute deviation of the values given is 4.24

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