sanaalrahwanji sanaalrahwanji
  • 02-12-2020
  • Mathematics
contestada


In this question, all lengths are in centimetres.
Given
AB: AC = 1:2
AB= 3x-4
AC= 2x + 12
show that
AC: BC = 2:3
BС= 7X-2

In this question all lengths are in centimetres Given AB AC 12 AB 3x4 AC 2x 12 show that AC BC 23 BС 7X2 class=

Respuesta :

Skpk Skpk
  • 09-01-2021

Answer:

Step-by-step explanation:

AB/AC =1/2

(3x-4)/(2x+12)=1/2

2(3x-4) = 1(2x+12)

6x-8=2x+12

4x=20

X=5

AC/BC =3x-4/7x-2=22/33=2/3

AB/AC=3x-4/7x-2=22/33=2/3

AB/AC=3x-4/2x+12

6x-8=2x+12

You would get 4/5 still trying to work out the last mark

Answer Link

Otras preguntas

Solutions a and b are separated by a selectively permeable barrier (membrane). over time, the level of fluid on side a increases. which solution initially had t
Write the augmented matrix for each system of equations.
How can chemical symbols prove that cubic zirconia is not a diamond?
You have 45 pencils. Five out of every 9 are yellow pencils and the rest are brown. How many pencils are yellow? Please show your work...
1/2(18-5x)=1/3(6-4x)
divide 28 cans of soda into two groups so the ratio is 3 to 4to
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! On a spring scale that measures force, a reading shows the force of an object to be about halfway between 7 N
What is the answer to number one? I got (4)11
What is the range of possible sizes for side ‘x’?
Why did the terrorist attack the twin towers on 9 11?