X=-3 and y=5
2x+y=-1
-x+3y=18
3y-18=x
2(3y-18)+y=-1
6y-36+y=-1
7y=-1+36
7y=35
y=35/7
y=5
-x+3y=18
-x+3(5)=18
-x+15=18
-x=18-15
-x=3
x=-3
Answer:
We use the formula:
S 10 = 8 · [(1/2)^9 - 1] / (1/2 - 1 );
Then, S 10 = 8 · ( 1/512 - 1 ) / ( 1/2 - 1 );
S 10 = 8 · ( - 511 / 512 ) / (-1 / 2 );
S 10 = ( - 511 / 64 ) · ( - 2 );
S 10 = + 511 / 32;
S 10 = 15.96;
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Given: The weight of cement = 3 tons
The weight of bricks = 150 pounds
We know that 
Therefore, 
Now, the total weight of load in truck = 
Hence, the truck's load weigh in total = 6,150 pounds.
Answer:
trigonometry
Step-by-step explanation:
37: 37, 74, 111 and so on....just add 37 to the number before.