Answer:
36
Step-by-step explanation:
for the equation, we have to add 1 cubed, 2 cubed and 3 cubed together to get the answer. That equation would look like this
1^3 + 2^3 + 3^3
or expanded out
(1x1x1)+(2x2x2)+(3x3x3)
Solving that down, the equation turns into this
1 + 8 + 27
Adding those values together leaves us with 36!
Hope this helped, have a good rest of your day!
Answer:
Step-by-step explanation:
r(t) = (7 cost + 7t sin t)i + (7 sin t - 7t cos t)j
Using eq (1) and (2)
If you make 60 become 6 and 20 become 2, then multiply them both by eachother you get 30. Add a zero to compensate for the ones you took out of the other 2 number. There ya go
Answer: D is right
Step-by-step explanation: time is 4 hours when there are 7 electricians.
You multiply 4·7 = 28
Then there are 3 electricians who need x hours.
You solve 3x = 28 x ) 28/3 = 9,33 hours, also 9 h 20 min
( x - 4 ) ( x^2 + 4x + 16 )