Mathematics High School

In triangle ABC, DEAC. If AD=12, BD=3, and CE=10, find BE.

In Triangle ABC, DEAC. If AD=12, BD=3, And CE=10, Find BE.

Answers

Answer 1

Answer:

BE = 2.5

Step-by-step explanation:

Remark

Use triangles ABC and DEB.

Formula

AB/DB = BC / BE

Givens

AB = 15BD = 3BC = 10 + xBE = x

Solution

15/3 = (10 + x)/x              Cross multiply

15x = 3(10 + x)                Remove the brackets

15x = 30 + 3x                 Subtract 3x from both sides.

15x - 3x = 30                  Combine

12x = 30                         Divide by 12

x = 30/12

x = 2.5

Related Questions

need geometry help please

Answers

Answer:

I think C

Step-by-step explanation:

pls pls pls pls pls help​

Answers

Answer:

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

Step-by-step explanation:

[tex]4(y+1)= \frac{3}{1-y}[/tex]

[tex]4y+4= \frac{3}{1-y}[/tex]

[tex](4y+4)(1-y)= 3[/tex]

[tex]4y(1-y)+4(1-y)=3[/tex]

[tex]4y-4y^{2} +4-4y=3[/tex]

[tex]-4y^{2}=3-4[/tex]

[tex]4y^{2}=1[/tex]

[tex]y^{2} = \frac{1}{4}[/tex]

[tex]y=\sqrt{\frac{1}{4} }[/tex]

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

SOMEONE HELP PLEASE!

Answers

Answer:

x=48 and y is 132 my guy u welcome

Answer:

48 + y = 180

y= 132

5x - 17 = 132

x=29.8

Find the value of x. 2x - 3 + 5​

Answers

Answer: -1

Explanation: -3 + 5 = 2

2x + 2 = 0

x = -1

the coordinates of point A(-3,2) and the coordinates of point B(4,1) what is the length of AB?

Answers

9514 1404 393

Answer:

  AB = 5√2

Step-by-step explanation:

The length of AB is given by the distance formula:

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((4 -(-3))² +(1 -2)²) = √(7² +(-1)²) = √(49 +1) = √50

The length of AB is √50 = 5√2.

Which statement is true about the graph of s > 4.5?
The graph has an open circle and the arrow points to the left.
The graph has a closed circle and the arrow points to the left.
The graph has an open circle and the arrow points to the right.
The graph has a closed circle and the arrow points to the right

Answers

Answer: D

Step-by-step explanation:

The graph has a closed circle and the arrow points to the right

Answer:It is D

Step-by-step explanation:

Right on edge 2021

Please help me ill give u Brainlyest

Answers

Answer: 25 is the absolute value

Positive 25 because it has | | that means it becomes positive

A. y+x=-3
B. y=3x+1
C. y-3x=1
D. y=3x+1

Answers

Answer:

Step-by-step explanation:

This is good :)

Find the value of x in the triangle shown below

Answers

Answer:

x= 80°

Step-by-step explanation:

An isosceles triangle has two equal sides and two equal angles; so 50° + 50° = 100

then you have to subtract 100° from 180° and you'll get 80°

FOR MATH ITS DUE TODAY

Answers

Distributive Property is factors a common term by the items that are inside parenthesis.

3(2x + 5)

3 = Factor

3(2x + 5)

2x and 5 = terms

3(2x + 5)

2 = coefficient

The coefficient is the number before the variable.

Ace

A line crosses the coordinates (-3,5) and (4,-2). What is the slope of the line?

Answers

Answer:

Slope = -1

Step-by-step explanation:

[tex]\frac{-2-5}{4-(-3)}=\frac{-7}{7} =-1[/tex]

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Answers

a30 = 12 - 5 (30-1)

a30 = 12 - 5 • 29

a30 = 12 - 145

a30 = -133


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Answers

That was very inspirational, I almost cried.

-5 x - 3=
Please help

Answers

-5x-3= 15. Remember. - x - = +

Answer:

x=-3/5

or if you wanted to factor it you can not

it would just be  -5 x - 3

Step-by-step explanation:

to solve this would be simple you just have to divide

-5x/-5=-3/5

x=-3/5

The tables at the party are shaped like a hexagon. If you put the tables together, how many would you need for 50 people?

Answers

Answer:

You need 12 tables

Step-by-step explanation:

Answer:

10 Tables

Step-by-step explanation:

a hexagon has 6 sides, and since they are together we have to subtract a side to get 5 sides. Now 50 / 5 = 10 tables

On a chemistry quiz, there are 5 multiple choice questions with 4 choices each. What is the probability that you get a 100% if you strictly guess.

Answers

Answer:

0.097%

Step-by-step explanation:

Since this is a series of events probability question, in order to calculate the probability you need to first find the probability of getting each individual answer right and then multiplying those probabilities together. This will give you the probability of getting 100% on the entire test. Since the questions are multiple-choice with 4 choices and only 1 correct choice then the probability of getting one right is 1/4 or 25%. Now that we have that probability we simply need to multiply it 5 times for each individual question.

1/4 * 1/4 * 1/4 * 1/4 * 1/4 = 1/1024 or 0.0009765 or 0.097%

Plz help with this I would mean a lot...Thanks!

Answers

Answer:

the number is one

Step-by-step explanation:

7-1= 6

6-3=2

hope this help and could u give me brainliest, thanks!

Introduction (Kinda)

So you want to write the equation and find the number.

Writing the Equation

Well, the question says "A number s is subtracted from seven. When the result is divided by three, the quotient is two."

If a number s is being subtracted from seven.

7-s

When the result of 7-s is divided by three, the quotient is two. Since your effecting the result of 7-s, you have to put those in parentheses.

(7-s)

Your dividing 7-s by 3.

(7-s) / 3

When you do that, you get 2.

(7-s) / 3 = 2

This is the equation.

Finding the Number

Now you need to solve the equation.

(7-s) / 3 = 2

You need to isolate the s. "Remove" the numbers in opposite PEMDAS order...

Addition and Subtraction

Multiplication and Division

Exponents

Parentheses

7-s is in parentheses.

Divided by 3 is division. So you do that first.

You can multiply by 3 to cancel that out.

(7-s) / 3 × 3 = (7-s)

2 × 3 = 6

7-s = 6

Now that 7-s is on its own side, you can remove the parentheses.

So now to cancel the 7, you subtract 7 from each side (of the equation).

7-s-7 = -s

6-7 = -1

-s = -1

Now to cancel the negative signs, multiply each side by -1.

-s × -1 = s

-1 × -1 = 1

s = 1

Final Answer

The equation is...

(7-s) / 3 = 2

The number is...

1

Simplify: –5 1/4 - (-7 1/2)​

Answers

Answer:

-5 1/4 - (-7 1/2) = 9/4

Step-by-step explanation:

Use a calculator to check.

What is the value of x

Answers

Answer:

24

Step-by-step explanation:

45 is 60% of what?
I need this ASAP pls and thank u

Answers

Answer:

27

What is 60 percent (calculated percentage %) of number 45? Answer: 27

Step-by-step explanation:

Answer:

It should be 75%

Step-by-step explanation:

Please give me brainliest

As an estimation we are told £3 is €4.
Convert €98.60 to pounds.
Give your answer rounded to 2 DP.

Answers

Njsjxjdjdjfnxjfjfnfjfjgjgjgifn
98.60 divided by 4
24.65 multiplied by 3
73.95 pounds

What fraction is equal to 75% of [tex]\frac{1}{2}[/tex]

Answers

3/8 is 75% of 1/2 I hope this helps!

Answer:

3/8

Step-by-step explanation:

If u answer this, ill give you 15​

Answers

Answer:

7/10

Step-by-step explanation:

Answer:

70%

Step-by-step explanation:

Hope this helps have a great day.

Whoever can tell mee what 77x45 will get brainly tell me howw u got it

Answers

Answer:

3465

Step-by-step explanation: I got 3465 by multiplying 77 times 45.  

since yall are smart uh i need help so


What is the difference between the 15th square number and the 3rd square number?

Answers

Answer:

216

Step-by-step explanation:

15^2=225

3^2=9

225-9=216

Do you know who Billie Eilish is, do you like her, do you listen to her music?

Answers

Answer:

yes yes yes

Step-by-step explanation:

Answer:

no, i do not know who billie eilish is

Step-by-step explanation:

HELP FAST I will give brainliest

Answers

48% maybe i’m not 100% but that’s my best guess

Answer:

The answer would be C.48%

i don't know the answer pls tell me the answer

Answers

Step-by-step explanation:

3 groups with 6 flowers in each group

or

2 groups with 9 flowers in each group

or

6 groups with 3 flowers in each group

or

9 groups with 2 flowers in each one

Answer:

molly could make 6 group of flowers with 3 in each one of them

Step-by-step explanation:

What is the equation of the line that passes through the point (5, -2) and has a slope of 6/5?

​

Answers

Answer:

And line passes through the point (-6,5). we get y=mx+b => 5 = -4(-6)+b => b = 5-24 => b=-19.

Step-by-step explanation:

The equation of the line that passes through the given point is y=6/5 x + 2.

Given that, the line that passes through the point (5, -2) and has a slope of 6/5.

What is the slope intercept form?

The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept.

The standard form of the slope intercept form is y=mx+c.

Put m=6/5 and (5, -2) in y=mx+c, that is

-2 = 6/5 × (-2) + c

⇒ -2 = -12/5 + c

⇒ -10 = -12 + c

⇒ c = 2

Put m=6/5 and c=2 in y=mx+c, we get

y=6/5 x + 2

Therefore, the equation of the line that passes through the given point is y=6/5 x + 2.

To learn more about the slope intercept form visit:

brainly.com/question/9682526.

#SPJ2

What is the slope of the line that goes through the following two points?
(2,0) & (4,4)
1/2
2/4
-2/1
2/1
What is the can fhe line that the theft

Answers

Answer:

The slop for (2,0) & (4,4) is 2

Step-by-step explanation:

and for "1/2 2/4 -2/1 2/1 What is the can fhe line that the theft" Wdym by that?

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