Answer:
Perimeter=42cm
Step-by-step explanation:
It is given that AC is the angle bisector of the trapezoid ABCD which divides the trapezoid into two similar triangles that are △ABC and △ACD.
Now, it is also given that AB=9cm and CD=12cm.
Since, it is a trapezoid, then AB will be parallel to CD, thus
∠BAC=∠DCA (Alternate angles)
Also, it is given that ∠DAC=∠BAC
⇒∠DAC=∠DCA
Also, ∠ACD=∠ACB( Angle bisector)
Therefore, If the angles are equal, then the corresponding sides will also be equal. Hence, △ABC and △ACD are isosceles triangle, therefore
AB=BC=9cm and CD=AD=12cm
Now, the perimeter of trapezoid is the sum of all the four sides of the trapezoid, therefore
Perimeter=AB+AD+CD+BC
Perimeter=9+9+12+12
Perimeter=42cm
Answer:
5. a) 5b
b) 3b + 2b
Step-by-step explanation:
a) b + b + b + b + b is the same as
5 * b or 5b
b) 5b = 3b + 2b
or 3 * b + 2* b = 5b
If my answer is incorrect, pls correct me!
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-Chetan K
Answer:
6
Step-by-step explanation:
diagonals bisect each other in rectangle
3x-6 = 2x
x=6
Answer:
C. x + 1 < 5; x < 4
Step-by-step explanation:
Since he already got 1 C, he can only have 3 more. Since x has to be <em>less than 4</em>, that rules out B and D instantly. A is ruled out because x can't be equal to 4 since you need less than 5 C's to get into UGA.
Hope this helps. :)
I think it’s a mixed decimal because it’s a number consisting of a integer plus a behind the decimal formation.
Hopefully this is correct and helpful