The simplest form of 21:28 is 3:4. you just divide both numbers by the greatest common factor.
Answer:
i think this is right
Step-by-step explanation:
4
Answer:
If he left it for 6 hours he would pay $26. The equation for leaving it in for t hours is 8+3t.
Step-by-step explanation:
3 * 6 = 18. 18 + 8 = 26.
The simplest way of writing this:
<span><span><span><span>7p</span>−1</span>−<span>9p</span></span>+5</span><span>=<span><span><span><span><span><span>7p</span>+</span>−1</span>+</span>−<span>9p</span></span>+5</span></span>Combine Like Terms:<span>=<span><span><span><span>7p</span>+<span>−1</span></span>+<span>−<span>9p</span></span></span>+5</span></span><span>=<span><span>(<span><span>7p</span>+<span>−<span>9p</span></span></span>)</span>+<span>(<span><span>−1</span>+5</span>)</span></span></span><span>=<span><span>−<span>2p</span></span>+4</span></span>Answer:<span>=<span><span>−<span>2p</span></span>+<span>4</span></span></span>
4 key pad
4^6 is the answer or 4096 ways
1 in 4096 is the probablity that he gets it on the first try