8+ the product of 2 and a number to the third power, what it means 2×m cubed. So it is 8+2m (cubed)
hope it helps
Answer:
11
Step-by-step explanation:
The two equations appear to be ...
- 12x +4y = 152
- 32x +12y = 420
These can be solved for y using Cramer's rule:
y = (152(32) -420(12))/(4(32) -12(12)) = -176/-16 = 11
The cost of the vegetarian lunch is 11.
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<em>Comment on Cramer's Rule</em>
For equations ...
ax +by =c
dx +ey = f
The solutions are ...
x = (bf -ey)/(bd -ea)
y = (cd -fa)/(bd -ea) . . . . note the denominators are the same expression
Once you memorize the pattern of products, this can be the simplest way to solve a pair of equations--especially if you only need one of the variable values.
1. 7b + 10
2. 13x
3. 4v
4. 2 + 2k
5. 12n
6. 0
7. 8 + 12x
8. 6v + 1
9. 7n
10. 7p
11. 1
12. 18 + 5n
13. 10x + 84
14. 18p - 40
3/8 written as an decimal is <span>0.375</span>
