law of cosines
please show your work :)
Will mark as brainlest

Law Of Cosines Please Show Your Work :) Will Mark As Brainlest

Answers

Answer 1

Answer:

33.9

Step-by-step explanation:

cos rule:

a²=b²+c²-2xaxbxcosA

rearrange:

cosA=(b²+c²-a²)÷(2xaxb)

solve:

cosx=(8²+22²-16²)÷(2x8x22)

cosx=(64+484-256)÷352

cosx=292÷352

cosx=0.830

cos^-1(shift cos)=33.9


Related Questions

When you add 98 to a number you usually...

Answers

Aneser:

+98

Step-by-step explanation:

when you are adding something to something to something else u put a plus sign to add it hope this helps

Just answr. I’ll give lot of point

Answers

Answer:

there is no picture but i can try to help you

Step-by-step explanation:

Answer:

REALLY TY *BOWS*

Step-by-step explanation:

You are flying your dragon kite.​ It's connected to 40yd of string. The kite is directly above the edge of a pond. The edge of the pond is 36yd from where the kite is tied to the ground. How high is the kite above the edge of the​ pond?

Answers

We have a right triangle with hypotenuse 38 and leg 34.

We want to find the other leg.

We use the Pythagorean Theorem:

Simplify the expression by arranging the steps in sequence, based on the order of operations.

Answers

Answer:

[tex]\displaystyle 6x - 5[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \frac{1}{6}(30x + 24) - \frac{1}{7}(63 - 7x)[/tex]

Step 2: Simplify

Distribute:                           [tex]\displaystyle \frac{1}{6}(30x) + \frac{1}{6}(24) - \frac{1}{7}(63) - \frac{1}{7}(-7x)[/tex]Multiply:                              [tex]\displaystyle 5x + 4 - 9 + x[/tex]Rearrange:                          [tex]\displaystyle 5x + x + 4 - 9[/tex]Combine like terms:          [tex]\displaystyle 6x - 5[/tex]

-3p>-48 Solve the inequality

Answers

9514 1404 393

Answer:

  p < 16

Step-by-step explanation:

Dividing the inequality by a negative number will reverse the comparison.

  -3p > -48

  (-3p)/(-3) < (-48)/(-3) . . . . divide both sides by the coefficient of p

  p < 16

_____

Alternate solution

Add 3p+48 to both sides.

  -3p +(3p +48) > -48 +(3p +48)

  48 > 3p

Divide both sides by 3; no reversal is necessary.

  16 > p . . . . . same answer as above, without the comparison reversal

PLS answer asap
Enter the missing numbers in the boxes to complete the table of equivalent ratios.

Answers

1,9,21 ggffhgsrtggdryubvcdsg

Javier asks his mother how old a tree in their yard is. His mother says, “The sum of 10 and two-thirds of that tree’s age, in years, is equal to 50.”

Javier writes the equation (10 + two-thirds) a = 50, where a is the tree’s age in years. His equation is not correct. What error did he make?

Answers

Answer:

Javier's equation is not correct because the variable "a" should be multiplied by  only and then added to

Step-by-step explanation:

Let

a------>is the tree’s age in years

we have that

-------> Javier's equation

we know that

The equation that represent the situation is equal to

Solve for a

Multiply by  both sides

Javier's equation is not correct because the variable "a" should be multiplied by  only and then added to

It should be a(two third)+10=50

d + 5.5 = 10. Solve for d.

Answers

Answer:

4.5

Step-by-step explanation:

d=10-5.5

d= 4.5

we just need to minus 10 with 5.5 so that we can find d

Work backwards using the Distributive Property.
8(2) + 6(2) =
O 6(8+2)
O 8(2 +6)
O (8+6)2
O 2(6+2)

Answers

The answer would be C. (8+6)2 because 8(2)=16 and 6(2)=12 16+12=28 and because both have a 2 in them then 2 would be in the outside and it involves 8+6

Hope this helps

Have a great day/night

If your gonna answer thanks
A.
B.
C.
D.
Can someone please get me the answer fast

Answers

Answer:

i think its 3.5 because of how it is going

The answer is 3.5 hope this works

please answer asap correctly dont troll!!!

Answers

Answer:

10

Step-by-step explanation:

Bro, again the same question))

a>17-8

a>9

Figure shows 2 lines

Answers

Answer:

provide pictures next time

When using a number line, in which direction should you move when subtracting a negative value?

Answers

Answer:

LEFT

Step-by-step explanation:

Answer:

Move to the right when you're subtracting a negative number.

48 is 16 2/3% of what number?

Answers

Answer:

288

Step-by-step explanation:

I hope this helps <3

28 divided by x+4=11

Answers

Answer:

x = -16/11

Step-by-step explanation:

28/(x+4)=11

28=11(x+4)

28=11x+44

11x=-16

x=-16/11

Answer: x=4

Step-by-step explanation:

28 divided by x+4=11

28 divided by x=7

28/7=4

what is 0.47 of £1 as pound sign

Answers

Answer:

In the Unicode standard, the symbol £ is called POUND SIGN, and the symbol ₤ is the LIRA SIGN.

What is the sum of 2x+1 and its opposite?

Answers

Answer:

Zero. The sum of anything and it's opposite is zero, that's how an opposite is defined . In this case, the opposite of 2x+1 is -(2x+1)=-2x-1 by the distributive property . Adding like terms, 2x+-2x+1+-1=0+0=0.

0 (i dont have a proper explanation)

3x-2y=1x+4y=33 elimination process ​

Answers

Answer:

x = 5 ; y = 7

Step-by-step explanation:

3x - 2y = 1       --------------------(I)

 x + 4y  = 33 ------------(II)

Multiply equation (II) by (-3) and then add. So, x will be eliminated and we can find the value of y

(I)            3x - 2y = 1

(II)*(-3)   -3x -12y = -99         {Now add}

                 - 14y = -98

                        y = -98/14

y = 7

Plugin y = 7  in equation (I)

3x - 2*7 = 1

  3x - 14 = 1

         3x = 1 + 14

         3x = 15

           x = 15/3

x = 5

Find the area, in square units, of rectangle ABCS plotted below.

Answers

Answer:

The answer is D-80

Step-by-step explanation:

Got it correct on the quiz

1. Angle 3 and Angle 6 are examples of which type of angle pair?

Answers

Your answer is:Alternate Interior Angles

The museum of natural history has an auditorium that can seat 200 people. A class of 45 students is seated in the auditorium for a lecture. What decimal represents the portion of the seats in the auditorium that are empty? Please help FAST!

Answers

Answer:

.225

Step-by-step explanation:

45/200

Evaluate functions from their graph f(-5)=

Answers

Answer:

7

Step-by-step explanation:

(-5,7) lies in the graph!

Let f(x) = x2 + 8x - 2, find lim f(x).
X 2

Answers

f(x)=18

Hope that helps!

QUICK EZ MATH


A bookcase is 4 ft tall. A model of the bookcase is 6 ft tall. What is the ratio of the height of the model bookcase to the height of the real bookcase?

Answers

Answer:

4:6

Step-by-step explanation:

The ratio of the height of the model bookcase to the height of the real bookcase will be 3: 2.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

A bookcase is 4 ft tall. A model of the bookcase is 6 ft tall.

The ratio of the height of the model bookcase to the height of the real bookcase is given by the division of the numbers 4 and 6. Then we have

Ratio = 6 / 4

Simplify the ratio, then we have

Ratio = 6 / 4

Ratio = 3 / 2

Ratio = 3: 2

The ratio of the height of the model bookcase to the height of the real bookcase will be 3: 2.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

#SPJ5

Paul had some candy to give to his three children. He first took four pieces for himself and then evenly divided the rest among his children. Each child received two pieces. With how many pieces did he
start?

Answers

He started out with 10 pieces

Answer:

10 pieces

Step-by-step explanation:

Work backwards

Multiply 3 by 2 to get 6

Add 4 to 6 to get 10

Check:

10 - 4 = 6

6/3 = 2

A rectangle has an area of 6 1/2 square inches. It's length is 2 1/4 inches. What is the width

Answers

6 1/2 / 2 1/4

13/2 x 4/9= 52/18

2 16/18

2 8/9

answeeeeeeeeeeerrr thank you

Answers

Answer:

x = 52

m<ACD = 159

m<ACB = 21

Step-by-step explanation:

1) Set up an equation.

2x + 55 = 3x + 3 (the two interior angles on the opposite of the triangle and the exterior angle are equal to the exterior angle)

2) Solve for x.

2x + 55 = 3x + 3

-x + 55 = 3

-x = -52

x = 52

3) Substitute 'x' into each angle required to find m<ACD and m<ACB.

m<ACD = 3(52) + 3

= 156 + 3

= 159

CHECK:

2(52) + 55 = 159

104 + 55 = 159

159 = 159

m<ACB + m<ACD = 180

m<ACB + 159 = 180

m<ACB = 21

Solve the system of equations:

x+y=5

-4x-2y=-8

Which point on the graph below is the solution to the system of linear equations?


A. W
B. X
C. Z
D. Y

Answers

Answer:

the correct answer would be Y! i took it!! make me most brainlessly please!!!

Step-by-step explanation:

While in the water, Meg saw some treasures located

between the surface of the water and 1 foot below.

Which fractions come between those two numbers?

Check all that apply.

1

0 1

Answers

Answer:

A and D

Step-by-step explanation:

The fractions between these heights are -

-1/10 , -2/10, -3/10, - 4/10, - 5/10, - 6/10, -7 /10, - 8/10, - 9/10

What is a mathematical function, equation and expression?          

Function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function

Expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators

Equation : A mathematical equation is used to equate two expressions.

Given is that while in the water, Meg saw some treasures located between the surface of the water and 1 foot below.

Assume the surface to be at 0 ft. Then, 1 feet below, can be written as -

x = - 1

So, the fractions between these heights are -

-1/10 , -2/10, -3/10, - 4/10, - 5/10, - 6/10, -7 /10, - 8/10, - 9/10

Therefore, the fractions between these heights are -

-1/10 , -2/10, -3/10, - 4/10, - 5/10, - 6/10, -7 /10, - 8/10, - 9/10

To solve more questions on functions, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ5

Find the value of x ​

Answers

Answer:

x=20°

Step-by-step explanation:

The triangle is equilateral. (All sides are the same).

Each angle in an equilateral triangle is 60.

3x=60

x=20°

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