1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
saw5 [17]
2 years ago
10

Number 4 plssss!!!!!!!!!!

Mathematics
2 answers:
shtirl [24]2 years ago
6 0

Answer:

AB = 21

Step-by-step explanation:

Tales' theorem

\frac{12}{14} =\frac{18}{AB}

AB=\frac{(14)(18)}{12}

AB=21

Hope this helps

olya-2409 [2.1K]2 years ago
5 0

(i)Given that:

AE || BD

AB = ? [Let AB be x]

BC = 3

ED = 12

DC = 4

We know that

By Basic Proportionality Theorem,

AB/BC = ED/DC

On substituting these values in the above formula

⇛ AB / 3 = 12 / 4

On applying cross multiplication then

⇛ x(4) = (12)3

⇛ 4x = 36

Shift the number 4 from LHS to RHS.

⇛ x = 36÷4

⇛ x = 36/4

Therefore, AB = 9

<u>Answer</u>: The value of AB for the given problem is 9.

Similarly,

(ii) Given that:

EB || DC

AE = 14

ED = 12

AB = ? [Let AB be X]

BC = 18

We know that

By Basic Proportionality Theorem,

AE / ED = AB / BC

On substituting these values in the above formula

⇛ 14 / 12 = x / 18

On applying cross multiplication then

⇛ 14(18) = (12)x

⇛ 252 = 12x

Shift the number 252 from LHS to RHS.

⇛ X = 256÷12

⇛ X = 21

Therefore, AB = 21

<u>Answer</u>: The value of AB for the given problem is 21

<u>Additional comment:</u>

Basic Proportionality Theorem

  • " A line drawn parallel to the one side of a triangle intersecting other two sides at two different points, then the line divides the other two sides in the same ratio".

<u>also read similar questions</u>: In the given figure QR ∥AB, RP∥ BD,CQ=x+2,QA=x,CP=5x+4,PD=3x.The value of x is..

brainly.com/question/18679712?referrer

brainly.com/question/18679661?referrer

You might be interested in
Kate needs to determine the number of 3/7 pound serving in 7 5/7 pounds of turkey. How many people will the turkey serve?
Elina [12.6K]
You can serve 18 people
7 0
3 years ago
If four times a number plus 3 is 11, what is the number
garri49 [273]
4x + 3 = 11
4x = 11 -3
4x = 8
x =8/4
x =2

answer
the number is 2
3 0
3 years ago
Read 2 more answers
What are the solutions to x2 + 8x + 7 = 0? A. x = –8 and x = –7 B. x = –7 and x = –1 C. x = 1 and x = 7 D. x = 7 and x = 8
NikAS [45]

Answer:

x= -7      x = -1

Step-by-step explanation:

x^2 + 8x + 7 = 0

Factor

What 2 numbers multiply to 7 and add to 8

7*1 = 7

7+1 = 8

(x+7)(x+1) =0

Using the zero product property

x+7 =0   x+1 = 0

x= -7      x = -1

8 0
3 years ago
Read 2 more answers
Factor by first factoring out the greatest common 1actor 15x 35x-30 15x-35x-30​
Lostsunrise [7]

Answer:

5(3x+2)(x−3)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
(2x+5)^2<br><br>is it 4x^2+20x+25?​
Daniel [21]
Yes that’s your answer!! Good job!!
4 0
3 years ago
Other questions:
  • Elisa is writing an algebraic expression for the phrase 5 less than a number
    5·1 answer
  • What is the approximate length of the midsegment parallel to BC.
    7·2 answers
  • How many square inches are in 60 square feet?
    8·2 answers
  • PLZ HELP HURRY PLZ!!!!!!!!!!!!!!!!
    8·1 answer
  • Luke’s dad need 165 for a new suitcase. If he saves an equal amount for 3 weeks, how much does save each week?
    11·1 answer
  • Is y=4x+6 And -8x+2y=12 independent dependent or inconsistent
    9·1 answer
  • Please help with this problem, will mark brainliest
    8·2 answers
  • Create and solve a system of equations, solve for x and y.
    10·1 answer
  • Question Help
    12·2 answers
  • Find the surface area of the prism
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!