the sides of a triangle are in the ratio 3:4:5 what is the length of each side if the perimeter of the triangle is 90cm
1 answer:
P of triangle = a + b = c = 90
<span>ratio 3:4:5
so a = 3x, b = 4x , c = 5x
3x + 4x + 5x = 90
12x = 90
x = 90/12 = 7.5
a = 3x = 3 * 7.5 = 22.5
b = 4x = 4 * 7.5 = 30
c = 5x = 5 * 7.5 = 37.5
Answer:
1st side = 22.5
2nd side = 30
3rd side = 37.5
Double check: 22.5 + 30 + 37.5 = 90 (perimeter)</span>
You might be interested in
Her profit was 0.24 cents. Hope this helps!
X = √7²+4² by using Pythagoras Theory as the triangle is a right angled triangle
Answer:
100 yards or 300 feet
Step-by-step explanation:
Answer:
1. mean 2. mean absolute deviation
Step-by-step explanation:
{x-2y=-6
{3x+y=-4 /*2
{x-2y=-6
<u>{6x+2y=-8 </u> (+)
7x=-14 /:7
x=-2
3x+y=-4
3*(-2)+y=-4
-6+y=-4
y=2
Solution: (-2; 2)