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27-03-2019
Mathematics

contestada

Find the value of x to the nearest tenth.
Answer options: 8.9, 7.5, 8.1, 7.9

Find the value of x to the nearest tenth Answer options 89 75 81 79 class=

Respuesta :

27-03-2019

Answer:

8.9

Step-by-step explanation:

apply pythagorean relationship

a²+b²=c²

where a=? b=4 and c=6

hence c²-b²=a²

6²-4²=a²

36-16=a²

√20=a

a=√20

but x= 2a

x=2 × √20

x=8.944 ⇒8.9 to the nearest tenth

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