Answer:
1. 2^9 = 512
2. 2^3 = 8
3. 7^3 = 343
4. 6^3 = 216
5. 3^6 = 729
Step-by-step explanation:
To start we have to express the number as a multiplication of prime numbers, from there we can take the expression as a power
1.
2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 512
2^9 = 512
2.
2 x 2 x 2 = 8
2^3 = 8
3.
7 x 7 x 7 = 343
7^3 = 343
4.
6 x 6 x 6 = 216
6^3 = 216
5.
3 x 3 x 3 x 3 x 3 x 3 = 729
3^6 = 729
Answer:
The 1st, 3rd, 4th, 5th are correct
Answer:
6.8, 26.2, -7.8, -10.2, 2.6, -12.9
Step-by-step explanation:
20. is 6.78232 Rounded answer is 6.8
21. 26.172504657 rounded to the nearest tenth is 26.2
22. is -7.8102496759 rounded to the nearest tenth is -7.8
23. -10.246950766 rounded to the nearest tenth is -10.2
24. is 2.5980762114 rounded to the nearest tenth is 2.6
25. -12.942179106 rounded to nearest tenth is -12.9
Answer:
108
Step-by-step explanation:
Answer:
x=-6 y=-1
Step-by-step explanation:
// Solve equation [2] for the variable y
[2] y = -x - 7
// Plug this in for variable y in equation [1]
[1] 3x - 2•(-x -7) = -16
[1] 5x = -30
// Solve equation [1] for the variable x
[1] 5x = - 30
[1] x = - 6
// By now we know this much :
x = -6
y = -x-7
// Use the x value to solve for y
y = -(-6)-7 = -1
Solution :
{x,y} = {-6,-1}
