Hey there :)
We have two equations:
3a + 2b = 7
2a + 2b = 9
We need to solve simultaneously to find the values of a and b
eq.1 3a + 2b = 7
eq.2 ( 2a + 2b = 9 ) x -1 ) multiply by -1 to cancel 2b
3a + 2b = 7
- 2a - 2b = -9 ( Add both together )
-------------------
a = - 2 Substitute the value you found for a in a in order to find b
3( - 2 ) + 2b = 7 2( - 2 ) + 2b = 9
- 6 + 2b = 7 OR - 4 + 2b = 9
2b = 13 2b = 13
b =
b =
Answer:
what's the question? I don't know
Answer:
its and symobol of an number or letter
The first two are correct because you have to understand and the questions are right good job w8th it
Answer:
- <u><em>Option A. 64,500</em></u>
Explanation:
1. First, calculate the number of hits had during the month, by difference:
- 50,165 hits - 7,278 hits = 42,887 hits
2. Round the result to obtain an approximation = 43,000 hits
3. Multiply by the time that each lasted:
- 43,000 hits × 1.5 min/hit = 64,500 minutes.
Hence, the answer is the option A.