The densities of three metal alloys, A, B and C, are in the ratio 13: 15:21
1 mº of alloy B has a mass of 8600 kg.
Work out the difference between the mass of 5 m of alloy A and 3 m of alloy C.
Give your answer correct to 3 significant figures.

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

i would say b) is your answer

sorry if im wrong

step-by-step explanation:

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.