There are 7 ways to choose the calculus textbook at one end, then 6 ways to choose the calculus textbook at the other end. Then there are 9 ways to choose the second textbook, 8 ways to choose the third textbook, and so on. But then there are 4 ways to choose the number theory textbook, so there are 7*6*9!*4 = 60963840 ways that work.
<em>The answer to 32.85÷15 is 2.19. First, you need to change 32.85 into a whole number. To do that, multiply by powers of ten. There are 2 powers of ten need to turn 32.85 to a whole number. Whatever you do to one side, you must do to the other. So, add 2 zeros to 15. The expression becomes 3,285÷1500. The answer is 2.19</em>
Answer:
$76.95
Step-by-step explanation:
If you reverse it the equation is 16.93 divided by .22 and you get the total which is 76.95
You can check your answer by doing 76.95 times .22 and get the tip which is 16.93
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Answer:
10
Step-by-step explanation:
So because AC is intersected at the middle, or the midpoint, being E, you can say that both sides of AC; AE and EC, are equal to each other. You can make 4x-3=3x-1 and combine like terms to get X on one side by itself. First, you want to subtract 3x from both sides to move the x from left side and only have it on the right. You should x-3=-1. Then, you want to remove the -3 from the left side and bring it to the right to have x by itself. To cancel the -3 on the left side you have to add 3 on both sides. You should have x=2. Now that you have x, you can plug it into both AE and EC, then add them together. You should have 5 for AE and 5 for EC, and adding them up makes 10. Hope I could help :)
Change in temperature = Final temp. - Initial temp.
⇒ -5 - 20 = -25 F
So, Temperature fall be 25 degree. [ -ve sign shows temperature fall]
Hope this helps!