Find the missing side length

Mathematics

2 answers:

shutvik [7]4 years ago

8 0

We will use the Pythagoras theorem which will say

17^2 -15^2 = the side length
289 - 225 = 64
then you square root the answer
= √64
= 8
side length = 8

Nezavi [6.7K]4 years ago

3 0

17^2 - 15^2
= 289 - 225
= 64

missing side = √64 = 8

answer
A. 8

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$\Rightarrow 75 \times 14 = 82 \times x + 50 \times (14-x) \\\\\Rightarrow 75 \times 14 = 82 \times x + 50 \times14-50\times x \\\\\Rightarrow 75 \times 14 = 32 \times x + 50 \times14 \\\\\Rightarrow 32 \times x =75 \times 14 - 50 \times14 \\\\$

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and $y = 14-x= 14-10.9375=3.0625$ grams.

Hence, 10.9375 grams of 82% gold and 3.0625 grams of 50% gold added to make 14 grams of 75% gold.

Case 2: 82% gold + 25% gold

Let x grams of 82% gold and y grams of 25% gold added to make x+y=14 grams of 75% gold, so

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