Find m∠ABD
picture is attached

Find MABDpicture Is Attached

Answers

Answer 1

Answer:

DC = DA Given

DB = BD Reflexive property

ΔDCB ≅ ΔDAB LH

∠DBC = ∠ABD = 20°

Hope this helps!


Related Questions

Any help is appreciated

Answers

Answer:

<KMN=5°

Step-by-step explanation:

<K+<L=<KMN

81+4x=13x+36

81-36=13x-4x

45=9x(divide both sides by 9)

x=5°=<KMN


Which of the following describes the parabola with the equation y = 4x2 - 12x + 9?

A) The axis of symmetry is x = 0 and the vertex is (0,9).

B)The axis of symmetry is x= 1.5 and the vertex is (1.5, 0).

C)The axis of symmetry is x = 4 and the vertex is (4, -12).

D)The axis of symmetry is x = -1.5 and the vertex is (-1.5, 36).

Answers

Answer:

Step-by-step explanation:

To find the vertex of this parabola, "complete the square:"  Rewrite y = 4x2 - 12x + 9 in the form y = 4(x - h)^2 + k:

y = 4x^2 - 12x + 9  =>  y = 4(x^2 - 3x) + 9.

Now complete the square of x^2 - 3x:  Take half of -3 and square the result, obtaining (-3/2)^2, or 9/4.  Add 9/4 to x^2 - 3x and then subtract 9/4 from the result:  We get x^2 - 3x + 9/4 - 9/4.  Substitute this result back into

y = 4(x^2 - 3x) + 9:  y = 4(x^2 - 3x + 9/4 - 9/4) + 9

and then rewrite the perfect square x^2 - 3 + 9/4 as the square of a binomial:

                                 y = 4(x - 3/2)^2 - 9/4) + 9.  This simplifies to:

                                 y = 4(x - 3/2)^2 + 0.

Thus, the vertex is at            (3/2, 0) and the axis of symmetry is x = 3/2.  This agrees with Answer B.





















































Item 14
Question 1
REASONING The data sets show the years of the coins in two collections.

Your collection: 1950, 1952, 1908, 1902, 1955, 1954, 1901, 1910

Your friend’s collection: 1929, 1935, 1928, 1930, 1925, 1932, 1933, 1920

Compare the measures of center and the measures of variation for each data set.

Your collection's mean is
. Your collection's median is
. Your collection's range is
. Your collection's interquartile range is
. Your collection's mean absolute deviation is
.

Your friend's collection's mean is
. Your friend's collection's median is
. Your friend's collection's range is
. Your friend's collection's interquartile range is
. Your friend's collection's mean absolute deviation is
.

Answers

Your collection's mean answers

median - 1930

range - 54

interquartile range - 50

mean absolute devitation - 23.75

Your friends collection mean answers

median - 1929.5

range - 15

interquartile range - 7

mean absolute devitation - 3.5

Would really appreciate a brainliest!!

PLEASE HELP URGENT!!!!!
WILL MARK U AS BRAINLIEST!!!!!​

Answers

Answer:

B.

Step-by-step explanation:

Well in a secant - secant angle, the measure of E is equal to half the measure of CD - AB. You can calculate CD by subtracting 325 from 360.

CD = 35

E = 1 / 2(85 - 35)

E = 25

Answer:

B.

Step-by-step explanation:

A pine is 35 and one half feet​ tall, and grows 3 and one half feet each year. A redwood is 43 feet​ tall, and grows 3 and one half feet each year. How tall will each tree be after 21 years?

Answers

Answer:

Pine would be 108.5 Redwood would be 116.5.

Step-by-step explanation:

Since they both grow the same amount, we just add their original number by 73.5.

In the 2014\,\text{-}\,20152014-20152014, start text, negative, end text, 2015 season of the English Premier League, there were 202020 soccer teams, and each team played a total of 383838 matches. The scatter plot below shows the average number of goals each team scored per match, and how many total matches each team won. Each dot on the scatter plot represents a team. A line was fit to the data to model the relationship between scoring goals and winning games.

Answers

Answer:

Option B. y = 14x - 3.5

Number of wins for the team will be 24.5

Step-by-step explanation:

Since line of best fit passes through two points (0.25, 0) and (0.75, 7)

Let the equation of the line of best fit is, y - y' = m(x - x') + c

Here 'm' = Slope of the line

              = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

              = [tex]\frac{7-0}{0.75-0.25}[/tex]

              = [tex]\frac{7}{0.5}[/tex]

          m = 14

Equation of the line of best fit passing through a point (0.25, 0) will be

y - 0 = 14(x - 0.25)

y = 14x - 3.5 [Option B]

Now number of wins for a team that scores 2 goals per match will be,

For x = 2

y = 14x - 3.5

y = 14×2 - 3.5

  = 28 - 3.5

  = 24.5 wins

Therefore, number of wins for the team will be 24.5

Answer:

B on khan and 24.5

Step-by-step explanation:

Describe a general procedure to find the surface area of any figure.

Answers

Answer:

To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (L), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

To find the total surface area of a figure, we need to add all the areas of every surface and add them.

What is the surface are?

The surface area of a figure is the total area of the outside of the figure.

If the surface area of a particular figure is just only one type (ex: sphere), then the calculation of the surface area will be easier.

If the surface of a figure consists of different types of geometrical figure(ex: cone), then we need to find the area of each and then add them.

Learn more about the surface area of a figure here: https://brainly.com/question/10026601

#Tag #SPJ2

what is the slope of the line that passes through the points (6, -3) and (1, 7)

Answers

Answer:

-2

Step-by-step explanation:

find the area of each sector. Use a 3.4 as the value of pi. Round your answer to the nearest tenth. Label unit.​ part 2

Answers

Answer:

153.9 m² (nearest tenth)

Step-by-step explanation:

When the angle is measured in degrees, the formula of the area of sector is:

[tex] \frac{θ°}{360°} \times \pi {r}^{2} [/tex]

Given: r= 14m, θ= 90

Area of sector

[tex] = \frac{90°}{360°} \times 3.14 \times {14}^{2} \\ = 153.86 \\ = 153.9 \: m^{2} \\ (nearest \: tenth)[/tex]

Mary has read 76% of her book and it’s on page 114. how many pages are in the book?

Answers

Answer:

150 pages

Step-by-step explanation:

76%

Write as a decimal by dividing by 100

76% / 100 = 0.76x

0.76

Add a decimal (x)

0.76x

Set equal to 114 (the page Mary is at)

114 = 0.76x

Divide 0.76 by 114

x = 150

There are 150 pages in the book

Hope this helps :)

Answer:

Step-by-step explanation:

Answer:

150 pages. Mark me brainiiest.✌✌

Step-by-step explanation:

76%

Write as a decimal by dividing by 100

76% / 100 = 0.76x

0.76

Add a decimal (x)

0.76x

Set equal to 114 (the page Mary is at)

114 = 0.76.

Divide 0.76 by 114 x = 150.

There are 150 pages in the book.

Hey, just trying finish up some math before school ends. What's the answer to 3n+2(-2n-1) ? Thanks!

Answers

Answer:

-n - 2

Step-by-step explanation:

3n+2(-2n-1)

= 3n -4n -2

= -n - 2

What is the slope of the line through (-9,-6) and (3,-9)

Answers

Answer:

-0.25 or -1/4

Step-by-step explanation:

Remember slope is : change in y's over change in X's

You ask 200 randomly chosen students to name their favorite ice cream flavor. There are 1800 students in the school. Based on the results of the survey, predict the number of students in the school whose favorite ice cream flavor is chocolate.

Answers

Answer:

351

Step-by-step explanation:

Complete question :

Vanilla= 36

Chocolate=21

Strawberry=24

Chocolate Chip=39

SOLUTION:

39 chocolate chip to 200 students = x chocolate chip to 1800 students

39/200 = x / 1800

Solving for 'x'

(200)(x) = (39)(1800)

200x = 70200

x = 70200/200

x = 351

OR

39 out of 200 picked chocolate chip

therefore, 39/200 = 0.195 = 19.5%  ( 32.5% chose chocolate chip)

19.5% of 1800 = 0.195(1800) = 351 students

Box 2:
length • width • height = (4x-1)•x•x^3
volume = 4x^5-x^4
Degree of length:
Degree of width:
Degree of height:
Degree of volume:

Answers

Degree of length=1

Degree of width=1

Degree of height=3

Degree of volume=5

The [SUM] of the degree of each factor is the degree of the product

Why does this make sense Answer is C

Since a linear function has a degree of 1, hence the degree of the length, width and height is 1. The degree of the volume is 3

Degree of a polynomial

The degree of an equation is the power of the leading variable.

Given the following measures

length = 4x - 1

width = x

height = x -3

Since a linear function has a degree of 1, hence the degree of the length, width and height is 1. The degree of the volume is 3

Learn more on degree of a function here: https://brainly.com/question/1600696

#SPJ6

Use a graphing calculator to find the value of f(x) when x = 2 for the function f(x)=x2-5.

Answers

Answer:

-1

f(2)= 2* 2 - 5 = -1

but if you meant f(x)=x²-5

its

f(2)=2²-5 = 4-5 = -1

it's indeed not the same for all other values of x, for example x=3!

(would really appreciate the brainliest)



David and Mark are marking exam papers. Each set takes David 61 minutes and Mark 1 hour. Express the times David and Mark take as a ratio in its simplest form.

i'm not sure how to do it

Answers

Answer:

61 : 60

Step-by-step explanation:

Well to make a ratio, you just have to have David time : Mark time

So if you convert Mark's time into minutes, it is 60 minutes

61 : 60

That's the simplest form.

Answer:

ratio of David's time to Mark's time = 61/60 = 61:60 = 61 to 60

Step-by-step explanation:

A ratio is a way of comparing numbers by dividing one number by the other. In order to write a ratio, both numbers have to be in the same units.

David takes 61 minutes to do a task.

Mark 1 hour to do the same task. 1 hour = 60 minutes.

You are comparing David's time to Mark's time.

The ratio of David's time to Mark's time is 61 minutes to 60 minutes.

ratio of David's time to Mark's time = 61/60 = 61:60 = 61 to 60

There area of a wall is 600 square feet.
How much paint is needed if there is 8 liters per square feet?​

Answers

Answer: i think about 4800 liters

Step-by-step explanation:

600 feet/ by 8 liters of sq ft is 4800

The graph of a certain quadratic function has no x-intercepts. Which of the
following are possible values for the discriminant? Check all that apply.
A. 25
B. -18
C. -4
D. 0

Answers

Answer:

Step-by-step explanation:

Your answers are -18 and -4

I need help with this ONE question!
(-1)(-fg)(-xy)

Answers

Answer:

fgxy

Step-by-step explanation:

(-1)(-fg)(-xy)

(1fg)(-xy)

-1fgxy

fgxy

what is the area
what is the perimeter

Please answer Quickly ​

Answers

Answer:

34 cm; 48 cm^2

Step-by-step explanation:

5+5+12+12=10+24=34

12(4)=48

1 (4x – 8) + 3x = 36

Answers

the answer would be 6.3
the 1 infront of the parentheses multiples whatever is inside the parentheses. So it simplifies to 4x + 8 + 3x = 36
(the 8 used to be negative)

then you combine the x’s:
7x + 8 = 36

then you do the opposite on the other side:
7x = 36 - 8

then it becomes simplified:
7x = 28

then you divide:
28/7

x = 4

Brain made a tasty burger. The diameter was 5 cm. What is the radius of the circle?

Answers

Answer: 2.5 cm

Step-by-step explanation:

5/2=2.5

The radius is half the diameter to just divide the diameter by 2 to find the radius.

4/7 - -3/5 pls answer​

Answers

Answer:

Step-by-step explanation:

when operating with two negative signs, the signs change to positive. so, the question becomes;

4/7 + 3/5

find LCM of the denominators then calculate, or just use a calculator.

the answer is 41/35 or in mixed fraction = 1 and 6/35

identify the volume and surface area of a sphere in terms of pi with a great circle area of 144 pi ft

Answers

Answer:

Volume of sphere is 2,304 pi ft^3

Surface area of sphere is 576 pi ft^2

Step-by-step explanation:

When we talk of a great circle, we are talking of a circle around the sphere that has the same radius as the sphere.

Mathematically the area of the great circle is pi * r * r

now pi * r^2 = 144 pi

divide both sides by pi

r^2 = 144

r^2 = 12^2

since power are equal, we equate bases and the radius of the circle is thus equal to 12 feet

Now to calculate the volume of the sphere,

We know that the volume of a sphere is ;

V = 4/3 * pi * r^3

V = 4/3 * pi * 12^3

V = 4 * pi * 4 * 12^2 = 2304 pi ft^3

The surface area of the sphere is mathematically equal to 4 * pi * r^2

= 4 * pi * 12^2 = 576 pi ft^2

A trailer truck carries 11,430 bottles, each weighing 14 ounces.To the nearest ton, how much weight does the truck carry

Answers

Answer:

10

Step-by-step explanation:

[tex]11430\cdot 14 = 160020[/tex] ounces

[tex]160020\div 16=10001.25\approx 10[/tex] tons.

Hope this helps!

The required weight that the truck carried in ton is 5.

What is Unitary Rule?

In the counting or finding data problem we first calculate the value of unity element then further add or multiply the next ones

How to calculate unitary method?

Here we have given truck carry

11,430 bottles

If each bottle weight = 14 ounce

Therefore total weight of 11,430 bottles is = 11,430x14 = 160020 ounce

Also we have

1 ton = 32000 ounce

Or 1 ounce = [tex]\frac{1}{32000}[/tex] ton

Therefore the required weight in ton of total weight 160020 ounce is

= [tex]\frac{160020}{32000}[/tex]

= 5

This is the conclusion to the answer.

Learn more about unitary method here-

https://brainly.com/question/8083231

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The Talbot family got 2 pizzas and 4 drinks for $32. The Martinez family got 3 pizzas and 8 drinks for $52. How much does each pizza and each drink cost?

Answers

Answer:

Each pizza costs $12.

Each drink costs $2.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the cost of each pizza.

y is the cost of each drinks.

The Talbot family got 2 pizzas and 4 drinks for $32.

This means that [tex]2x + 4y = 32[/tex]

The Martinez family got 3 pizzas and 8 drinks for $52.

This means that [tex]3x + 8y = 52[/tex]

Using the addition method, multiplying the first equation by -2.

-4x - 8y = -64

3x + 8y = 52

-4x + 3x - 8y + 8y = -64 + 52

-x = -12

x = 12

Each pizza costs $12.

2x + 4y = 32

2x + 4y = 32

4y = 32 - 2x

4y = 32 - 2*12

4y = 8

y = 2

Each drink costs $2.

NEED HELP ASAP - 45 Pts. + BRAINLIEST for the best answer!!! (Please show your work)

Question:
When an 8kg mass is hung from a vertical spring, it stretches 12 cm. Calculate the spring constant “k”.

Answers

Answer:

the spring constant is 34 degrees going left down

Step-by-step explanation:

Please help!! I will give brainliest if you will explain your answer good. Thank u!! I think it is b ...... I need a second opinion!!
(Question and answer choices are attached)

Answers

my second opinion would be you are correct, its b

D
E
1. Which angle is vertically opposite to DGE

Answers

Answer:

BOF

Step-by-step explanation:

I am not sure but if you line it up you'll get it

Answer:

angle BGF

Step-by-step explanation:

angle BGF is vertically opposite to angle DGE

Frank I puts £5000 in a bank account for 6 years with an interest rate of 7.5% . what is the Amount at the end of that time?

Answers

Answer:

£2250

Step-by-step explanation:

Interest= p×r×t÷100

Interest= 5000×7.5×6÷100

Interest= 225000÷100

Interest= £2250

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