Answer:
51
Step-by-step explanation:
Substitute the value of a
3(2)³+10(2)²-3(2)-7
3(8)+10(4)-3(2)-7
24+40-6-7
64-13
51
Answer: me too its lowkey d u m b
Step-by-step explanation:
It
Is
Not smart
4. 6x + 5y = 4 a
6x-7y = -20 b
a-b
6x + 5y -6x+ 7y = 4+20
12y = 24
y = 2
Sub y in a
6x + 10 = 4
6x = 4-10
x = -6/6 = -1
5. 2x-3y=12 a
4x+ 3y = 24 b
b+a
4x+3y+2x-3y =36
6x=36
x=6
Sub x in a
12-3y = 12
-3y=12-12
y= 0/3 = 0
To answer the problem above, we first find the velocity of the train that is travelling. It is calculated as follows:
Velocity = 42 km / 15 min = 2.8 km / min
The distance traveled after 3 hours at this speed is calculated by multiplying the velocity and the number of hours.
Distance = <span>2.8 km / min ( 3 hours ) ( 60 min / 1 hour ) = 504 km</span>
400 workers to build 1 ziggurat