The 129 mm length is left out of the 400 mm total length of the chain if she puts forty 1.7 mm beads twenty-seven 6.5 mm beads and eight 3.4 mm beads on the chain option (D) is correct.
What is an arithmetic operation?
Arithmetic is an area of mathematics involving the study of numbers and the different operations that can be performed on them. Addition, subtraction, multiplication, and division are the four basic math operations.
We have:
The total length of the necklace chain = 400 mm
Alice put 40 Nos 1.7 mm beads
Length for this = 40×1.7 = 68 mm
Alice put 27 Nos 6.5 mm beads
Length for this = 27×6.5 = 175.5 mm
Alice put 8 Nos 3.4 mm beads
Length for this = 8×3.4 = 27.2 mm
Total length occupied = 68+175.5+27.2 = 270.7 mm
The length of 400 mm chain is left = 400 - 270.7 = 129.3 ≈ 129 mm
Thus, the 129 mm length is left out of the 400 mm total length of the chain if she puts forty 1.7 mm beads twenty-seven 6.5 mm beads and eight 3.4 mm beads on the chain.
Learn more about the arithmetic operation here:
brainly.com/question/20595275
#SPJ2
