please send all answers fast
Answers
1.
Let the number be x.
Then,
3x + 14 =12
2.
x + y = -5 or -2, -3
3.
3000m : 750m
200m : 50m
40m : 10m
4m : 1m
4.
60
5.
x = 180 - (90+20)
x = 180- 110
x = 70°
( property used here is angle sum property of triangle)
6.
Since the equilateral triangle is congruent to the other triangle, the measure of the sides should be equal,
Perimeter of the other triangle = 3a = 3*5 = 15 cm
7.
Let the division of the money between Amar, Anand and Aruna be 2x, 7x, 4x respectively (as given)
Then, ATQ,
2x + 7x + 4x = 5200
13x = 5200
x = 5200/13
x = 400
So, Amar's share = Rs. 800
Anand's share = Rs. 2800
Aruna's share = Rs. 1600
8.
5x -7 = 3
5x = 3+7
5x = 10
x = 10/5
x = 2
9.
In ΔABC and ΔCDA,
AB = CD (given)
BC = AD (given)
AC = AC (common)
So, ΔABC is congruent to ΔCDA by SSS congruence rule.
Also <BAC = <ACD BY CPCT
10.
Let the angles be 3x , 4x and 2x,
Then,
3x + 4x + 2x = 180°
9x = 180°
x = 180/9
x = 20°
The angles are => 60°, 80°,40°
It is a acute scalene triangle.
HOPE IT HELPS. MARK AS BRAINLIEST.