Determine whether the number is divisible by 3. Give a reason based on the tests for divisibility
1 answer:
Answer:
No
Step-by-step explanation:
A little trick to easily see if things are divisible by 3 is to add the 2 numbers together.
For example with 71 if you add 7+1 you get 8. 8 is not divisible by 3.
However if you were looking at 81 you add 8+1 to get 9. 3×3=9 so 81 is divisible by 3.
By putting that into a calculator you can see that 81/3=27 and 71/3=23.6666...
Hope that helped!
You might be interested in
I think it’s -1 because with rise/run it goes down 2 and over 2 but the line is going down, so it’s negative.
Answer:
Step-by-step explanation:
![\sqrt[3]{54c}=\sqrt[3]{3*3*3*2c} =3\sqrt[3]{2c}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B54c%7D%3D%5Csqrt%5B3%5D%7B3%2A3%2A3%2A2c%7D%20%3D3%5Csqrt%5B3%5D%7B2c%7D)
Answer:
A) 8/9
Step-by-step explanation:
8 divided by 9 is 0.88888888888888888888889 on a calculator
X - Linda's speed
(x+8 )- Colleen's speed
8x - Linda's distance for 8 h
8(x+8) = 8x+64 - Colleen's distance for 8 h
8x + 8x + 64 = 176 - distance between Colleen and Linda after 8 h
8x + 8x + 64 = 176
16x +64 = 176
16x = 176 - 64
16x = 112
x= 7 mph Linda's speed
x+8 = 7+8 = 15 mph Colleen's speed
Answer:
The area of each section of the circle is 
Step-by-step explanation:
we know that
Each section represent a quarter of circle
The area of a quarter of circle is equal to
we have
substitute
