robert7248
01.04.2020 •
Mathematics
A right angled triangle has two side lengths of 14cm and 7cm. Work out the length of x
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Ответ:
15.65
Step-by-step explanation:
a^2+b^2=c^2
7^2+14^2=c^2
add 49+196=245
245=c^2
square root everything to get 15.65
Ответ:
-3a + 4b
= -3(3/6) + 4(-3/-5)
= -3/2 + 12/5
= 9/10