Here are sketches of four idangles
in each Inangle
the longest side is exactly 1 cm
the other length is given to 2 decimal places.
1 cm
0.82 cm
55
0.51 cm
Work out the value
of x
Give your answer
to 1 decimal place,
1 cm
0.85 cm
0.57 cm

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

2x+60=

step-by-step explanation:

the answer is d=3.09