In an isosceles triangle, angle B is 40 degrees, and angle E is 2x+4. What is x?

Answers

Answer 1

Answer:

x = 40°

Step-by-step explanation:

In order to answer this problem, you will need to know the definition of an isosceles triangle.

          An Isosceles triangle is specified as a triangle with 2 of its 3 sides having equal lengths.

Step 1: Draw your triangle.

Since 2 of your 3 sides are equal length and the primary angle measures 100°, you are dealing with an obtuse triangle or, properly named, a obtuse isosceles triangle.

Step 2: Label your angles inside of your triangle.

Remember that the sum of the angles inside of a triangle must add up to equal 180°.

Since we know the triangle we are dealing with in this problem, we can label our unknown angles 'x'.

      Caution: The above statement ONLY applies to this type of triangle.

Step 3: Write an equation.

           100° + x° + x° = 180°

Step 4: Solve for x.

           100° + x° + x° = 180°

             100° + 2x° = 180°

                 2x = 80°

                x = 40°


Related Questions

help!!

a teacher asks five students to write an equation with a solution of x= 4 . the students and their equations are shown below. which of the following students correctly wrote an equation with x= 4 as the solution ? select three that apply

Answers

Answer:

[tex](b)\ 2x - 9 = -1[/tex]

[tex](c)\ -2x + 12 = 4[/tex]

[tex](e)\ 2(x - 10) = -12[/tex]

Step-by-step explanation:

Required

Which equals [tex]x = 4[/tex]

[tex](a)\ 2x + 6 = 2[/tex]

Collect like terms

[tex]2x = 2 - 6[/tex]

[tex]2x = -4[/tex]

Divide both sides by 2

[tex]x = -2[/tex]

[tex](b)\ 2x - 9 = -1[/tex]

Collect like terms

[tex]2x = -1 + 9[/tex]

[tex]2x = 8[/tex]

Divide both sides by 2

[tex]x = 4[/tex]

[tex](c)\ -2x + 12 = 4[/tex]

Collect like terms

[tex]-2x =- 12 + 4[/tex]

[tex]-2x =-8[/tex]

Divide both sides by -2

[tex]x = 4[/tex]

[tex](d)\ 2(x + 2) = 10[/tex]

Divide both sides by 2

[tex]x + 2 =5[/tex]

Collect like terms

[tex]x = 5-2[/tex]

[tex]x = 3[/tex]

[tex](e)\ 2(x - 10) = -12[/tex]

Divide both sides by 2

[tex]x - 10 = -6[/tex]

Collect like terms

[tex]x = 10 - 6[/tex]

[tex]x = 4[/tex]

Hence, the equations with the required solution are:

[tex](b)\ 2x - 9 = -1[/tex]

[tex](c)\ -2x + 12 = 4[/tex]

[tex](e)\ 2(x - 10) = -12[/tex]

Can someone pleaseee help

Answers

Answer:

Step-by-step explanation:

all you have to do is * 7 by 5 and divide by 2

multiply 7 * 5 then divide by 2 which equals to 17.5

pls help asap ill give brainliest

Answers

Answer:

Third one

Step-by-step explanation:

Joanna needs a book to prop up a table leg. There are 8 Math books, 4 science books, and 5 history books. She
randomly selects a book, removing it from the shelf, and then selects another book. What is the probability that
Joanna selected two math books?

Answers

Answer:22% or 64/289

Step-by-step explanation: you take 8/17 which is math books over the total of books and multiply it together. simplify into a percent (if thats allowed)

8/17 x 8/17 = 64/289

Answer in correct standard form

Answers

It’s 746 and I used a calculator to do it

Please help me ASAP please

Answers

Answer:

Equation: 45 - 21 = s

The second answer is 24.

You can check by adding 24 + 21 which is 45.

A sphere has a radius of 5. What is its diameter?

Answers

Answer:

D=10

Step-by-step explanation:

Diameter of a Sphere

D = 2 r

D=2(5)

D=10

Answer:

Diameter = 10

Diameter - is the full thing

Radius - Is only half of the diameter.

Step-by-step explanation:

The picture will explain it to you visually

Spencer is riding his bicycle 2 7/10 miles to the park. He rides 1 1/4 miles and stops to take a drink. How much farther does Spencer have to ride to the park? Show your work.

Answers

Convert both mixed numbers to improper fractions since they do not have a similar denominator.

2 7/10 becomes 27/10
1 1/4 becomes 5/4

Now you need to find the least common denominator that 10 and 4 go into which is 20.

Multiply the top and bottom by the number it takes to make the denominator in each fraction 20

27/10 becomes 54/20 because you multiply the 10 and 27 by 2.

5/4 becomes 25/20 because you multiply the 4 and 5 by 5.

Now you can subtract the two fractions:

54/20 - 25/20 = 29/20

29/20 can be reduced to 1 9/10 which is how much farther he must go.

Help pls

••••••••••••••••

Answers

I'm so late sksksks

Answer:

1395 ft²

Step-by-step explanation:

The total area of the green surfaces

= 15² × 5

= 1125 ft²

The area of each triangular surfaces

= 15 × 9 ÷ 2

= 67.5 ft²

The total area of triangular surfaces

= 67.5 × 4

= 270 ft²

The total area of the figure

= 1125 + 270

= 1395 ft²

Which value is NOT a solution of x^3 + 64 = 0

Answers

Hi can we see the choicest

The cardinal number of {17, 18, 19, 20, ..., 95} is

Answers

Answer:

95

Step-by-step explanation:

a cardinal number is anything that is to 70 and the rest of the numbers above 70 are counting by 10s

Submit

IM.MP3.PC.2020-2021

Question: 1-2

Examine the polygons on the coordinate plane.

162

Select the triangle that represents a translation of

GHK.

B В

A

H

D

B

Ο Ο Ο Ο

C С

A

С

Answers

Answer:

can you send a picture please

.Use the following data set to answer the questions below.

8, 15, 17, 19, 21, 82

1. What is the mean?
2. What is the median?
3. Is there an outlier? If so, what is the outlier?
4. What is the mean without the outlier?

Answers

Answer:

1. The mean is 162 divided 6 = 27 which is like 27 x 6 = 162

2. So since 17 and 19 are in the middle of course you will have to add that together 17 + 19 = 36 but then you MUST ALWAYS divide by 2 which 36 divided by 2 = 18

3. Yes there is a outlier. and i believe it's 82

4. i believe the mean will be 80 but then divided by 5 will be 16

hope this helped :D

Step-by-step explanation:

name three of the main powers of the executive branch

Answers

The executive branch is headed by the president, whose constitutional responsibilities include serving as commander in chief of the armed forces; negotiating treaties; appointing federal judges (including the members of the Supreme Court), ambassadors, and cabinet officials; and acting as head of state.

This will help you.

They:

-Take care that the laws be faithfully executed

-Serve as commander in chief of the armed forces

-Carries out and enforces laws

The President of the United States is the head of the executive branch. It includes the president, vice president, the Cabinet, executive departments, independent agencies, and other boards, commissions, and committees.

Hope I was able to help. :DDD

What is the domain? Is it (-4,3)

Answers

Yes I think you are correct. The domain appears to be the set of x values such that -4 < x < 3 meaning that x is between -4 and 3, excluding each endpoint. In interval notation, that translates to (-4, 3). This of course assumes that we have two vertical asymptotes bookending the left and right sides of the curve, and these vertical asymptotes are at x = -4 and x = 3. If the curve extends beyond these boundaries, then the domain would instead be the set of all real numbers.

Frederick's salary varies directly with the hours he works. Last week I earned $ 328.30 and worked 33.5 hours. If he works 35 hours this week, what will be his salary from him?

Answers

Answer:

His salary will be of $343.

Step-by-step explanation:

Frederick's salary varies directly with the hours he works.

This means that this question can be solved by proportions, using a rule of three.

We have that:

For 33.5 hours, he earned $328.30. How much he earns for 35 hours?

33.5 hours - $328.30

35 hours - $x

Applying cross multiplication:

[tex]33.5x = 328.30*35[/tex]

[tex]x = \frac{328.30*35}{33.5}[/tex]

[tex]x = 343[/tex]

His salary will be of $343.

Please help me with this problem. Do not send me a link to some random website. I do not trust the link given that requires me to download it nor does Brainly allow links to websites other than itself to be on its community or whatever.

Answers

Answer: [tex]\left[\begin{array}{ccc}|x|0|1|2|3|4|5|6|\\|P(x)|0|4|8|12|16|20|24|\end{array}\right][/tex]

b. P(x)= 4x

c. The graph would go in a straight line touching each point given.

Step-by-step explanation: To find the perimeter of a square you can use the equation 4(x). If you multiply each x value by 4 you'll get the P(x) values.

I need help plz (will give brainlyist)

Answers

Answer:

x=5/2 ft

Step-by-step explanation:

∵V=lbh

⇒15/16= 3/4×1/2×x

(15/16)÷(3/8)=x

∴x=5/2 ft

3. Which reason can be used to conclude that DFGH is a parallelogram?
a) There are two pairs of congruent opposite angles.
D
b) The diagonals bisect each other.
c) There are two pairs of congruent opposite sides.
d) There are two pairs of opposite parallel sides.

Answers

Answer:

D) There are two pairs of opposite parallel sides.

Step-by-step explanation:

A parallelogram is a four-sided plane rectilinear figure with opposite sides that are parallel.

the answer is d there are two pairs of opposite parallel sides

All but one of the following cannot be used internationally​

Answers

Answer:

I think national flag cannot be used internationally

Step-by-step explanation:

hope it helps you

Please help!

Thank you ☺️

Answers

Answer:

I think it's,1,7,7 that will not make a triangle

hope this help

I need help with this ​

Answers

9514 1404 393

Answer:

x = 32y = 51

Step-by-step explanation:

Angle U = angle N = 180° -142° -24° = 14°

The expression for angle U tells us the value of x.

  2x -50 = 14

  x -25 = 7 . . . . . divide by 2

  x = 32 . . . . . . . .add 25

__

The measure of side SU is the same as that for side PN.

  13 = (2x -y)

  y = 2x -13 = 2(32) -13 . . . . solve for y, substitute for x

  y = 51

What does b equal in the picture below?

Answers

Answer:

87

Step-by-step explanation:

just subtract 16 from 103

A picture has a height that is 2 times it’s width . It is to be enlarged to an area of 128 in 2
What will the dimensions of the enlargement be , if the equation to represent its area 2x 2 = 128

Answers

9514 1404 393

Answer:

  8 in by 16 in

Step-by-step explanation:

In your equation, we presume that x represents the width. Solving for x, we have ...

  2x² = 128 . . . . . . given equation

  x² = 64 . . . . . . . . divide by 2

  x = √64 = 8 . . . . square root

The enlargement will be 8 inches by 16 inches.

Flowers can contain one or both sexes of flower parts. A ___ is the B____ is the C ____ is the All of these are male or female?​

Answers

Answer:

Answer:A) Anther( male )

B) Filament or stalk

Explanation:-The male parts of the flower are called the stamens and are made up of the anther at the top and the stalk or filament that supports the anther.

Help ASAP 6x - 3(2 – 3x)

Answers

Answer:

First: we expand

6x-(6-9x)

Then we simplify

6x-6+9x

Collect like terms

(6x+9x)-6

Simplify:

15x-6

The answer is 15x-6

The correct answer is 15x-6

Using the human species as an example, explain what is meant by a variation of traits.

Answers

Answer:

Every gene has many types of gene variants, which are called alleles. These alleles help the body prouperly code different types of variants. Humans have many different traits in their body, and that is how we have so many features. Genes are stored in chromosomes.

Answer:

Human variability, or human variation, is the range of possible values for any characteristic, physical or mental, of human beings. As the human species exhibits sexual dimorphism, many traits show significant variation not just between populations but also between the sexes.

Step-by-step explanation:

6. Which TWO sets of numbers
have a difference of 5?

A. 12 and 7
B. 13 and 6
C. 11 and 8
D. 14 and 9

Answers

Answer:

A and D

Step-by-step explanation:

A: 12-7=5

B: 13-6=7

C: 11-8=3

D 14-9=5

Have a Fantastic Day! :D

Answer: A. 12 and 7 and C. 14 and 9

Explanation:

Difference is the result of subtracting

12 - 7 = 5
13 - 6 = 7
11 - 8 = 3
14 - 9 = 5

Answer and explainaction please. End of course test is next week and I want to make sure I can work out answers on my own! :)

Answers

Answer: This is what I get.

Step-by-step explanation:

b/-3 + 4 ^ 13 what is b

Answers

Answer: −  b / 3  +  67108864

Step-by-step explanation:

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