Answer:
![x\frac{1}3 -5](https://tex.z-dn.net/?f=x%5Cfrac%7B1%7D3%20-5)
Step-by-step explanation:
You don't know the number, so you replace it with x.
Since it is one third of x, you multiply x by ![\frac{1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D)
Then you subtract 5 from the whole thing: ![x\frac{1}{3} -5](https://tex.z-dn.net/?f=x%5Cfrac%7B1%7D%7B3%7D%20-5)
Answer:
153
Step-by-step explanation:
i = square root of -1
i = √-1
(3+12√-1) (3-12√-1)
√a times √b = √ab
a√b times c√d = (a times c) √ (b times d)
9 - (36√-1) + (36√-1) - (144(√-1)^2) =
9 - 0 - (144 * -1) =
9 - 0 - (-144) =
9 - (-144) =
9 + 144 =
153
*** funny thing is if you put
(3+12i) (3-12i)
in a calculator
it works!
it gives you the answer 153
another way:
Expand the expression using
(a-b) (a+b) =
a²-b² :
3²-(12i)²
Simplify using exponent rule with same exponent
(a*b)^n =
a^n*b^n:
3²-12²* i²
Calculate the power:
9-144* i²
Rewrite by definition
i²=-1:
9–144×(−1)
Calculate the product or quotient: 9+144
Calculate the sum or difference: 153
Answer: 153
gathmath
Answer:I did this one and its 0.75
Step-by-step explanation:
I uploaded the answer to a file hosting. Here's link:
bit.
ly/3a8Nt8n
Answer:
LA = 720 , SA = 780
Step-by-step explanation:
find the missing length of the triangle using Pythagoras then use this value (8) to find the surface area of the sides and the triangle.Add up the values.