The sum of angles in a triangle is 180 prove

Answers

Answer 1

three angles= 180

180/3

60


Related Questions

What else would need to be congruent to show that triangle ABC is congruent to DEF by AAS?

Answers

Answer:

B

Step-by-step explanation:

In order the angles <C and <F are shared, then <B and <E, then the side equaling 10. This together proves that this triangle is congruent because of AAS (angle,angle,side) a triangle congruency rule.

Can someone help me out on these geometry fill in the blanks questions? Just questions 2,3,4.. it’s urgent

Answers

2.) 3&4
3.) 1&3
4.) 2&4

What is the logarithmic form of 13² = 169?

Answers

The logarithmic form of  13² = 169 is ㏒₁₃ 169 = 2

How to determine the logarithmic form

Using the logarithmic rule , we have that

㏒ₙn = bⁿ

Given 13² = 169

It is important to  note that it can be written either in the logarithmic form or in the index form.

In this case, we have written in the index form as .

㏒₁₃ 169 = 2

Thus, the logarithmic form of  13² = 169 is ㏒₁₃ 169 = 2

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Solve the following linear system by elimination. Check your solution:
1. x + 5y =4
2. 4x + 12y = 8

Answers

Answer:

(- 1, 1 )

Step-by-step explanation:

x + 5y = 4 → (1)

4x + 12y = 8 → (2)

multiplying (1) by - 4 and adding to (2) will eliminate x

- 4x - 20y = - 16 → (3)

add (2) and (3) term by term to eliminate x

0 - 8y = - 8

- 8y = - 8 ( divide both sides by - 8 )

y = 1

substitute y = 1 into either of the 2 equations and solve for x

substituting into (1)

x + 5(1) = 4

x + 5 = 4 ( subtract 5 from both sides )

x = - 1

As a check

substitute these values into the left side of both equations and if equal to the right side then they are the solution.

- 1 + 5(1) = - 1 + 5 = 4 = right side

4(- 1) + 12(1) = - 4 + 12 = 8 = right side

(- 1, 1 ) is the solution to the system of equations

PLEASE HELPPPP
An expression is shown below:
2x3 + 10x2 − 4x2y − 20xy
Part A: Re-write the expression by factoring out the GCF
Part B: Factor the entire expression completely
Show your work

Answers

The complete factor of the given expression is 2x(x-2y)(x+5)

Factoring of expression

Given the following expression shown below

2x^3 + 10x^2 − 4x^2y − 20xy

Factor out the GCF

2x^2(x+5)-4xy(x+5)

Group

(2x^2-4xy)(x +5)

2x(x-2y)(x+5)

Hence the complete factor of the given expression is 2x(x-2y)(x+5)

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help me please n^2, when n = 3

Answers

Answer: 9

Step-by-step explanation:

 Given:

n², n = 3

  Plug-in:

(3)²

  Square 3:

3 * 3 = 9, so (3)² = 9

  Simplify:

9

Answer 9
When n is 3 and you have A power of two ,Square it.
3x3= 9

fully simplify 7c - 4h - 2c - 5h​

Answers

Answer:

5c-9h

Step-by-step explanation:

1) 7c-4h-2c-5h

2) 5c-4h-5h

3) 5c-9h

Michell is making a sign for her sister's birthday. The sign says "HAPPY BIRTHDAY" in all capital letters. If each letter is 4/5 inches long estimate the length needed to spell out “HAPPY BIRTHDAY."
ps.also add 4/5 for the space between the two words..................... Thanks

Answers

Answer:

5/4 is the correct answer for this question

Two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle. Which congruence theorem can be used to prove that the triangles are congruent?
SSS
AAS
SAS
HL

Answers

Answer: Option 2 or B. AAS

Step-by-step explanation:  B. AAS

Trust me!

If you are working on Edge the answer is correct. The proof is down below. I hope someone finds this helpful.

If you found any of my answers helpful please like and subscribe I mean "heart", friend me and/or choose my answer as Brainliest. I would appreciate it!   Good luck everyone!  :)

When two angles and the non-included side of one triangle are congruent to other triangle the by AAS congruency they are congruent. Therefore, option B is the correct answer.

What is the congruence theorem?

Triangle congruence theorem or triangle congruence criteria help in proving if a triangle is congruent or not. The word congruent means exactly equal in shape and size no matter if we turn it, flip it or rotate it.

AAS, two angles and one side of a triangle are equal to two angles and one side of another triangle then they are congruent.

Therefore, option B is the correct answer.

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NEED HELP ASAP!!
This graph shows the total number of patients seen by a doctor over the course of a 5-day workweek.

What are the domain and range of this relationship??

Answers

Using the domain and range concepts, we have that:

The domain is: {0, 1, 2, 3, 4, 5}.The range is: {0, 12, 24, 36, 48, 60}.

What are the domain and the range of a function?

The domain of a function is the set that contains all the values of the input. In a graph, it is given by the values of x.The range of a function is the set that contains all the values of the output. In a graph, it is given by the values of y.

Hence, considering the given graph:

The domain is: {0, 1, 2, 3, 4, 5}.The range is: {0, 12, 24, 36, 48, 60}.

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Write at least 1 full sentence explaining the steps you would take to evaluate an expression.

Answers

The step you would take to evaluate an expression is to follow the order of operation

What are expressions?

Expressions are mathematical statements that involve variables, terms, coefficients and mathematical operators

How to determine the steps?

Different expressions require different ways of solving

However, the general guide is that the order of operation must be followed

The order of operation is represented by the acronym BEDMAS

Which means

Bracket

Exponent

Division

Multiplication

Addition

Subtraction

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6.Find by suitable rearrangement
a)4x2984x250
b) 495+114+205
factor of 13965

Answers

The solutions by suitable arrangement are:

2984000814

How to find the suitable arrangement

a)4x2984x250

By suitable arrangement, we would arrange this as

(4 x 250) x 2984

= (1000 * 2984)

= 2,984,000

b. b) 495+114+205

By suitable arrangement we would have:

(495 + 205) + 114

= 814

c. The factors of 13965 are all of the numbers that can divide this number.

They are: 1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1995, 2793, 4655, and 13965

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What is the system of inequalities associated with the following graph?


A) {y>−2
{x+y≥1


B){y<−2
{x+y≥1


C){y<−2
{x+y<1

D){y< -2
{x+y> 1

Answers

Answer: C

Step-by-step explanation:

[tex]y=-2[/tex] is dotted and shaded below, so it represents [tex]y < -2[/tex].

Also, [tex]x+y=1[/tex] is shaded above, so it represents [tex]x+y < 1[/tex].

show that,t for any triangle abc, even if b or c is an obtuse angle, a = b cos c + c cos b. use the law of sines to deduce the "addition formula" sin (b + c) = sin b cos c + sin c cos b.

Answers

For the triangle ABC, if B or C is an obtuse angle, then a = b cos C + c cos B  according to the law of sines and the addition formula.

What is the law of sines states?

For a triangle ABC with angles ∠A, ∠B, and ∠C and with sides a, b, and c

Thus, we can write,

sinA/a = sinB/b = sinC/c

or

a/sinA = b/sinB = c/sinC

Calculation:

It is given that in a ΔABC,

The ∠B or ∠C is an obtuse angle.

So, ∠A = 180° - (B + C)

⇒ sin A = sin (180° - (B + C))

⇒ sin A = sin (B + C) (since we know that sin(180° - θ) = sinθ)

From the addition formula,

sin (B + C) = sin B cos C + sin C cos B

⇒ sin A = sin (B + C)

⇒ sin A = sin B cos C + sin C cos B

From the law of sines,

a/sinA = b/sinB = c/sinC = K

⇒ aK =sin A, bK = sin B, cK = sin C

On substituting,

⇒ sin A = sin B cos C + sin C cos B

⇒ aK = bK cos C + cK cos B

⇒ K(a) = K(b cos C + c cos B)

a = b cos C + c cos B

Hence it is proved.

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If I went to bed at around 1:20 AM, and woke up at 8 AM, around how many hours of sleep did I get?

Answers

Answer:

you would get about 6:20 of sleep

you would have gotten at least 6 hours of sleep and 20 mins

Step-by-step explanation:

What is a disadvantage of debt consolidation?
OA. You can have payments that are lower.
B. You can spread payments over a longer time.
о C. You can have a lower interest rate.
о D. You can pay more money in the long term.

Answers

A disadvantage of debt consolidation is you can pay more money in the long term.

What is debt consolidation?


Debt consolidation is when a person takes out a new loan in order to pay off an existing loan. Debt consolidation increases the money you pay in the long term because you would still have to pay for the new debt incurred.

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Find the equation of the line perpendicular to y = - 1/2 ⁢ x − 5 that passes through the point ( 2 , 7 ) . Write this line in slope-intercept form.

Answers

The equation of the perpendicular line as required is; y = 2x -3.

What is the equation of the perpendicular line?

Since the line in discuss is perpendicular to the given line whose slope is; -1/2. It therefore follows that the slope of the line to be determined is;

m = -1/(-1/2) = 2.

The equation of the required line can therefore be written as;

2 = (y-7)/(x-2)

2x -4 = y -7

Hence, y = 2x -3 is the equation of the line.

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y=3x + 4
x=3y + 4
x-4= 3y

how do divide x-4 by 3?

Answers

Answer:

x = 3y + 4

Step-by-step explanation:

add 4 to both sides


simplify


117 Mr. Turtle, Mrs. Squirrel and Ms. Pigeon work at the Magic Forest's post office. Mr. Turtle can
deliver a package from the Southern Glade to the Northern Glade in 3 days, while Ms. Pigeon can
deliver it in 30 minutes. How much time will the same job take Mrs. Squirrel, if the ratio of Mr.
Turtle's time to the Mrs. Squirrel's time is the same as the ratio of Mrs. Squirrel's time to Ms.
Pigeon's time?

Answers

The proportion shows that the time taken to do the same job by Mrs. Squirrel is 6 hours.

How to calculate the value?

From the information given, the ratios are:

Turtle / Squirrel = Squirrel / Pigeon

3/x = x/(1/48)

x² = 1/16

x = 1/4

The number of days will be:

= 1/4 × 24

= 6 hours.

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Help me pleaseee!!! :(

Answers

B.
Slope = rise/run
4/-11

an=−2+32(n−1)

What is the 21st term of the sequence?

Answers

Answer:

a₂₁ = 638

Step-by-step explanation:

substitute n = 21 into the explicit formula

a₂₁ = - 2 + 32(21 - 1) = - 2 + 32(20) = - 2 + 640 = 638

Can someone write me a paragraph proof for this problem

Answers

Answer:

Step-by-step explanation:

ur mother

A researcher who wishes to study the effects of a prenatal breastfeeding education program on the length of time African-American inner-city women breastfeed infants learns that 70% of women in the target population are unmarried. To achieve stratified random sampling in a sample of 50 subjects, the researcher will:

Answers

Select a random sample of 35 unmarried and 15 married subjects

A researcher who wishes to study the effects of a prenatal breastfeeding education program on the length of time African-American inner-city women breastfeed infants learns that 70% of women in the target population are unmarried.

To achieve stratified random sampling in a sample of 50 subjects, the researcher will:

Select a random sample of 35 unmarried and 15 married subjects.

hence, Select a random sample of 35 unmarried and 15 married subjects.

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The amount of water in a leaky bucket is given by the linear function , where y is in ounces and x is in minutes. Find and interpret the slope and y-intercept of the linear equation.

Answers

The y-intercept = 127 and the slope = -10

How to determine the y-intercept and the slope?

The function is given as:

y = 127 - 10x

A linear function is represented as:

y = c + mx

Where

c = the y-intercept

m = slope

This means that:

y-intercept = 127

slope = -10

The y-intercept implies that, the initial amount of water is 127 ounces and the slope implies that the water leaks by 10 ounces per minute

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Complete question

The amount of water in a leaky bucket is given by the linear function y = 127 - 10x, where y is in ounces and x is in minutes. Find and interpret the slope and y-intercept of the linear equation.

Briefly explain how multiple regression enhances the two primary purposes of regression analysis.

Answers

The statistical goal of multiple regression analysis is to build a linear equation model that identifies the optimal weighted linear combination of independent variables in the study in order to optimally predict the reference variable.

Regression analysis is usually performed for one of two purposes. Predicting the value of the dependent variable of a person whose information about the explanatory variable is available, or estimating the effect of the explanatory variable on the dependent variable.

In multiple regression analysis, researchers can determine the strength of the relationship between the outcome (dependent variable) and multiple predictors, and the importance of each predictor in the relationship, often the effect of other predictors. It can be evaluated by statistically eliminating it.

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A triangle is translated by using the rule (x,y) →(x-4.y+1). Which describes how the figure is moved?
O four units left and one unit down
O four units left and one unit up
O one unit right and four units down
O one unit right and four units up

Answers

Answer:

Four units left and one unit up.

Step-by-step explanation
Adding -4 to each x-coordinate shifts the figure to the left 4 units.

Adding +1 to each y-coordinate shifts the figure up 1 unit.

The figure is moved ...

 four units left and one unit up

Answer:

2nd option

Step-by-step explanation:

x-4 = 4 left

y+1 = 1 up

2nd option

Select the correct answer from each drop-down menu.
Given: UX=WZ VW=XY
Prove: UV=YZ
The reason in line __ does not justify the statement because ___. Instead, the reason should be ___.

OPTIONS:
1:
A.)4
B.)5
C.)6
D.)3

2:
A.) Values were not added to each side
B.) Values were not subtracted from each side
C.) More than two segments were added.

3:
A.) The substitution property of equality
B.) Segment addition
C.) Given

Answers

The answers are D.)3, B.) Values were not subtracted from each side, and A.) The substitution property of equality

What is a straight line?

A straight line is a combination of endless points joined on both sides of the point.

We have;

UX=WZ

VW=XY

In line 3 the statement does not justify.

Because values were not subtracted from each side.

The reason should be substitution property of equality.

Thus, the answers are D.)3, B.) Values were not subtracted from each side, and A.) The substitution property of equality

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Answer:

I just got it right on the test

Step-by-step explanation:

Which graph shows a system of equations with a solution at (2, -1)?

Answers

Graph fourth shows a system of equations with a solution at (2, -1) option fourth is correct.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

The question is incomplete.

The complete question is

Which graph shows a system of equations with a solution at (2,-1)?

The graph is in the picture, please refer to the attached picture.

As we can see in the graph there are two graphs of a function shown.

The first one is a parabola and the second one is a linear graph.

From the graph, the intersection point of the two groups is at (2, -1)

The intersection point is shown in graph fourth.

Thus, graph fourth shows a system of equations with a solution at (2, -1) option fourth is correct.

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Answer:

Graph 4

Step-by-step explanation:

Three equivalent ratios are shown on the graph

Answers

To plot more the points, we move up one and right two.

How to plot more the points?

The ratios are given as:

(1, 0.5), (2, 1), and (5, 2.5)

Calculate the slope (m) using:

[tex]m = \frac{y_2 -y_1}{x_2 -x_1}[/tex]

So, we have:

[tex]m = \frac{1 - 0.5}{2 - 1}[/tex]

Evaluate

[tex]m = \frac{0.5}{1}[/tex]

This gives

[tex]m = \frac{1}{2}[/tex]

The above means

Vertical : Horizontal = 1 : 2

This means a vertical movement of 1, followed by an horizontal movement of 1

Hence, to plot more the points, we move up one and right two.

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Complete question

Three equivalent ratios are shown on the graph. On a coordinate plane, points (1, 0.5), (2, 1), and (5, 2.5) are plotted. Starting on one of the plotted points, how can you plot more equivalent ratio points?

PLEASE HELP, kinda forgot how to do it

Answers

Answer:

20

Step-by-step explanation:

Rise over run

Answer:

m = 20

Step-by-step explanation:

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