Answer:
49
Step-by-step explanation:
Step-by-step explanation:
a) 24.7×52.3=1291.81
On rounding off to 3 significant digits we get
1290
b)
![\sqrt{ {42}^{2} - {28}^{2} }](https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%7B42%7D%5E%7B2%7D%20-%20%20%7B28%7D%5E%7B2%7D%20%20%7D%20)
![\sqrt{1764 -784 } = \sqrt{980}](https://tex.z-dn.net/?f=%20%5Csqrt%7B1764%20-784%20%7D%20%20%3D%20%20%5Csqrt%7B980%7D%20)
=31.304951
On rounding off to 5 significant figures we get
=31.305
c)
![\sqrt[3]{78} = 4.27265](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B78%7D%20%20%3D%204.27265)
On rounding off to 2 significant figures we get
=4.3
Hence required answers
a)1290
b)31.305
c)4.3
I hope it helped you
Answer:
f(x) = 3x + 9
Step-by-step explanation:
The answer is in the image below.
I hope I've helped you.
The opposite of subtraction is addition.
Thus, adding by 941 is the opposite of subtracting by 941.