how to find an unknown angle in a quadrilateral

Answers

Answer 1
Subtract the sum of the angles from 180 degrees to get the missing angle. For example if a triangle in a quadrilateral had the angles of 30 and 50 degrees, you would have a third angle equal to 100 degrees (180 - 80 = 100).

Related Questions

HURRY!
What is the distance from (3 and one-half, 5) to (3 and one-half, –12)?

Answers

Answer to the question : 17 units

Answer:

17

Step-by-step explanation:

all you do is add -12 and 5 and pretend the - isnt there, and now you have 17.

Which of the following are exterior angles?? Check all that apply

Answers

Answer:

Exteririor angles mean the angles not in the triangle. So the 2 4 and 3

A, D, C

Answer:

Angles two, three, and four.

Step-by-step explanation:

Exterior angles are the angles that lie outside the triangle: in this case, 1, 5, and 6 are the angles which make up the triangle, meaning 2, 3, and 4 are exterior.

Find the value of x in the following quadrilateral.

Answers

Answer:

see below

Step-by-step explanation:

Because the sum of all angles in a quadrilateral is 360° we have:

90 + 101 + 12x + 3 + 9x - 2 = 360

21x + 192 = 360

21x = 168

x = 8°

Answer:

The value of x is 8.

Step-by-step explanation:

Given that total angles in a quadrilateral is 360°. So in order to find x, you have to add up all the angles together to make it equals to 360° :

[tex]101 + 12x + 3 + 9x - 2 + 90 = 180[/tex]

[tex]192 + 21x = 360[/tex]

[tex]21x = 360 - 192[/tex]

[tex]21x = 168[/tex]

[tex]x = 168 \div 21[/tex]

[tex]x = 8[/tex]

25 POINTS!!!!Which of the following statements are true? Select all that apply.

A + B = B + A
C - D = D - C
B + 0 = B
E - C = E + (-C)
|A| = |E|

Answers

Answer:

A+B=B+A

B+0=B

E-C=E+(-C)

Step-by-step explanation:

Answer:

A) A+B = B+A

C) B+0= B

D) E-C= E+(-C)

Step-by-step explanation:

(06.02 LC)
Simplify (3x - 5) - (5x + 1).
0-2x + 6
0-2x - 6
O 2x - 6
O 2x + 6

Answers

Answer:

-2x-6

Step-by-step explanation:

Look at the attachment

Simplify sqrt of 75x^6y^11 to the form a sqrt of b

Answers

Answer:

2121221

Step-by-step explanation:

The mathematical sentence 2x + 1 = x + 5 is a/an ______. Is it an inequality or an equation.

Answers

It's an equation.

(Btw i luv your profile pic :))

Answer:

It's an equation.

Step-by-step explanation:

[tex]2x + 1 = x + 5 \\ \: \: is \: \: \: \: an \: \: \: \: equation[/tex]

An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value

for an example,

[tex]4 < 6[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

please help! i need this asap

Answers

philip equation
ordered data: 3o(oranges), 3g(green), 6y, 8r, 13b(black, 15b(blue
mean: 8 mode: 3 range: 12

URGENTTT!!!!! Which of the following graphed relations does not represent a function?

Answers

Answer:

D

Step-by-step explanation:

last one.

if a vertical line cuts the curve at more than one points ,then it is not a function.

Answer:

I agree that it is D

Step-by-step explanation:

Identifying parallel and perpendicular lines

Answers

Answer:

C (Third answer)

Step-by-step explanation:

C should be the answer

select the two valuse of x that are roots of this equation. x^2+2x-5=0

Answers

Answer:

1 + sqrt(6)

You can't factor this by itself so you have to use the quadratic formula

Step-by-step explanation:

If OP=17 and QP=6, what is OQ? First, complete the Segment Addition Postulate for this problem.

OQ + QP= BLANK?

Fill in what you know and solve for OQ

OQ= BLANK?

Answers

Answers:

OQ + QP = OP

OQ = 11

============================================================

Explanation:

The smaller pieces OQ and QP glue together to form the larger segment OP. This is effectively what the Segment Addition Postulate says. This only works if all three points are on the same single line segment.

We know that OP is 17, so QP = 6 adds to the other unknown piece to get 17. The other piece must be 11 units long. Algebraically you could write,

OQ + QP = OP

OQ + 6 = 17

OQ + 6-6 = 17-6 ... subtracting 6 from both sides

OQ = 11

OQ is 11 if OP=17 and QP=6. This is obtained by using Segment Addition Postulate.

What is Segment Addition Postulate ?

If Q is between O and P, then OQ + QP = OP.

Find OQ + QP and OQ:

Given, OP=17 and QP=6

According to Segment Addition Postulate,

OQ + QP = OP

OQ + 6 = 17

OQ= 17-6 =11

OQ = 11

OQ + QP =17 and OQ = 11

Hence the value of OQ is 11 when OP is 17 and QP is 6.

Learn more about Segment Addition Postulate here:

brainly.com/question/22093187

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Can someone help me with these questions

Answers

Answer:

1. 1/40

2.9/50

3.1/5 =0.2= 20%

i dont know the rest sorry , but is that a dog behind it the paper ?

Create a two column proof for each question. Please help!!

Answers

Answer:

In this way it is proved

Which inequality will have a shaded area below the boundary line

Answers

Answer:

D.

Step-by-step explanation:

If you calculate the rest of the equations, they all result in y being more than (or equal to) the rest of the inequalities. You are looking for an inequality where y is LESS than the other stuff.

Hope this [kinda] helps!

Katie sewed costumes for the high school's annual play. She spent the following number of hours on each dress. What is the mean number of hours spent on each dress? 5 1/4 4 1/2 3 3/4 4

Answers

About 2.91 hours rounded

Answer:

round down to 2.9 if to 1dp

Step-by-step explanation:

CAN PLEASE PLEASE GET HELP PLEASE I NEED IT PLEASE AND THANK YOU

Answers

Answer:

Step-by-step explanation:

the domain for (2x-1)/(x^2-7) is x not equal to +/- sqrt(7)

plz plz will mark bianleast
Reflect point B across the x-axis.

What are the coordinates of point B'?


(2, 2)

(2, –2)

(–2, 2)

(–2, –2)

Answers

Answer:

(2, -2)

Step-by-step explanation:

Go along the x line to under point B (2) and then go up the y line to across form point B (2) then reflect it so (2, -2)

Answer:

(2,-2)

Step-by-step explanation:

when you reflect from b you two down to the x axis and the do it again. you will get your coordinates

Two angles add to 90°. The larger angle is 12° more than five times the measure of the smaller angle. Find the measure of the two angles.

Answers

Answer:

13 and 77 degrees

Step-by-step explanation:

First, you start by subtracting 12 from the 90..

90 - 12 = 78

then, take 78 and divide it by 6.

78/6 = 13

13 is the measure of your smaller angle.

multiply 13 by 5 and then add 12 to find the measure of the larger angle.

13 x 5 = 65

65 + 12 = 77

77 is the measure of your larger angle.

In the figure, BE||CD. Solve for x. Show your work.

Answers

Answer:

Answer is x = 15

Answer is given below with explanations.

Step-by-step explanation:

[tex]in \: the \: figure \: BE || CD \\ by \: thales \: theorem \\ \frac{AE}{ED} = \frac{AB}{BC} \\ on \: substituting \: the \: values \: from \: the \: figure \\ \frac{9}{6} = \frac{x}{10} \\ \frac{3}{2} = \frac{x}{10} \\ x = \frac{3 \times 10}{2} \\ x = \frac{30}{2} \\ x =15 \\ [/tex]

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

hey guys can uhelp me with my question please help no one is answering :(

Answers

Answer:

Step-by-step explanation:

1)

m=(y2-y1)/(x2-x1)

m=(9-0)/(7-4)

m=9/3

m=3

2)

m=(y2-y1)/(x2-x1)

m=(4-2)/(6-9)

m=2/(-3)

m=-2/3

3)

m=(y2-y1)/(x2-x1)

m=(3-(-1))/4-4)

m=4/0

m=undefined

(vertical line)

Purple Taxi has no pick-up fee, but charges $0.25 per mile. ABC Taxi charges $3 for pick-up and $0.15 per mile. Which inequality can be used to find the number of miles, n, for which the cost of a cab ride with Purple Taxi exceeds the cost of a cab ride with ABC Taxi? 0.25n≥3+0.15n 0.25n+3<0.15n 0.25n>0.15n+3 3+0.15n>0.25n

Answers

Answer:

0.25n>0.15n+3

Step-by-step explanation:

Hi, to answer this question we have to write an inequality:

Since Purple taxi charges 0.25 per mile, the cost of using Purple taxi is:

0.25n  

Where n is the number of miles.

ABC Taxi charges $3 for pick-up and $0.15 per mile

So, the cost for using ABC taxi is equal to the fixed fee per pick up (3) , plus the cost per mile (0.15n)

3+0.15n

To find the number of miles, n, for which the cost of a cab ride with Purple Taxi exceeds the cost of a cab ride with ABC Taxi, the cost of a cab ride with purple taxi must be higher (>) than the cost of a cab ride with ABC taxi.

0.25n>0.15n+3  

How many roots does (x+10)^9 have. Please explain how u did it.

Answers

Answer:

This expression contains a one root  (x= -10) of multiplicity 9

Step-by-step explanation:

Notice that this polynomial is given in factor form, since it is equivalent to 9 products of the same factor (x+10):

[tex](x+10)^9=(x+10)\,(x+10)\,(x+10)\,(x+10)\,(x+10)\,(x+10)\,(x+10)\,(x+10)\,(x+10)[/tex]

Therefore, there is a single root x = -10, since when x=-10 each of these binomial factors result in a zero.

In mathematical terms, such type of root is said to have multiplicity. And in this case, the multiplicity is "9" (the number of equal binomial factors of the polynomial form).

Answer:

9

Step-by-step explanation:

(x+10)^9 is the 9-degree polynomial so it has 9 roots

if it is equal to zero then it has 9 equal roots of x= -10

10. What is an expression for the perimeter of the triangle?
11. What is an expression for the area of the triangle?
12. Think about values for x, y, and z that would make the following statements true. If you think these values exist, give an
example of them. If you think they do not exist, explain why.

a.
The perimeter and area are both rational numbers.

b.
The perimeter is an irrational number and the area is a rational number.

C.
The perimeter and area are both irrational numbers.​

Answers

Answer:

See explanation, and comment for more details!

Step-by-step explanation:

10. The perimeter of any shape is the sum of the length of the sides, which means that the perimeter of this triangle is x+y+z.

11. Since this is a right triangle, the two legs form the height and base. The area of this triangle is therefore x*y/2.

12.

a. x=3, y=4, z=5

b. [tex]x=\sqrt{2}, y=\sqrt{2}, z=2[/tex]

c.[tex]x= \sqrt{3}, y=2, z=\sqrt{7}[/tex]

Hope this helps!

Which line has a slope 3/4

Answers

Line C.

Explanation: It is tilted 3/4 of the way.

Line C shown in the graph has a required slope of 3/4.

Given that,
A figure is shown we have to determine a line that has a slope of 3/4.

What is the slope of the line?

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanФ where x in degrees.

m  =(y₂ - y₁) /  (x₂ - x₁) = tanФ

here,
The slope of the line A = ∞
The slope of the line D = 0
The slope of the line B = 4/ 3
The slope of the line C = 3/4

Thus, Line C shown in the graph has a required slope of 3/4.

Learn more about slopes here:
https://brainly.com/question/3605446

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Solve for x.
-3+85-5=-8
A. -2.
B.-1
C.-3/4
D.0​

Answers

Answer:

-2

Step-by-step explanation:

-3+8x-5=-8

8x = -16

x = -2

Answer:

Undefined

Step-by-step explanation:

-3+8x-5=-8

+8 on both sides

8x = 0

Since you cant divide a number by 0, the answer is undefined

simplify 1/9 - 1/x over 1/81 - 1/x^2

Answers

Answer:

9x over x+9

Step-by-step explanation:

Which of the following relations is a function? A.{(0,2),(1,2),(2,2),(3,2)} B.{(2,0),(2,1),(2,2),(2,3)} C.{(3,5) ,(4,7),(5,9),(5,11)} D. {(4,5),(6,7),(8,9),(8,11)}

Answers

Answer:

the answer is A

Step-by-step explanation:

PLZ HELP GUYS I RLLY NEED HELPPP!
i rlly rlly rlly need help, i am not good at mathh! :(((((((((

Answers

Answer:

1`. y = 4x+6

2. y = -6x + 29

3. y= 3x+1

4. y = x -2

5. y = 11.5x+ 3

6. y = -2x -4

Step-by-step explanation:

The sides of a cube are numbered 4, 5, 6, 7, 8, and 9. What is the probability of rolling a 6?

Answers

Answer:

1/6

Step-by-step explanation:

out of 6 numbers in total there is only one 6 therefore there is only 1/6 chances

[tex]\frac{1}{6}[/tex]

Probability is a discipline of mathematics concerned with numerical explanations of the likelihood of an event occurring or the truth of a claim. The probability of an event is a number between [tex]0[/tex] and [tex]1[/tex]

Sides of a cube are numbered [tex]4,5,6,7,8,9[/tex]

Probability [tex]=[/tex] Number of possible outcomes [tex]\div[/tex] Total number of outcomes

Number of possible outcomes [tex]=1[/tex]

Total number of outcomes [tex]=6[/tex]

Probability of rolling a [tex]6=\frac{1}{6}[/tex]    

For more information:

https://brainly.com/question/11234923?referrer=searchResults

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