tertre

Or, you can list the first few squares out. If you know \(20^2=400\), ​\(19^2=381. \)

The sum of all six sides is 6*7/2=21.

Now, list all the cases out one by one, in order. Your answer should be 5/12.

Since it takes 10-15 minutes per a pound of ham, 7 pounds would take 10*7-15*7, 70-105 minutes. 

Wait, it is 1.30 seconds!

Since 1 bar is 4/5 of a meter, then 100 bars would be 80 meters. And, since there are 100 ticks in a minute and Sejes runs for 9.58 ticks, that is actually 5.75 seconds. So, he runs 80 meters in 5.75 seconds. On the other hand, Usain Bolt runs 1000 meters in 9.58 seconds. Thus, multiplying each side by 1.25, we get 5.75*1.25=7.1875 seconds. Now, divide 9.58 by 7,1875 to get approximately 1.33. Rounding that to the nearest hundredth gives us 1.30! 

Thank you, CPhill!

Yay, 30-60-90 triangles!

We can label the figure, by creating the four opposite from 90 degrees and the two across from the 30 degrees. We have to solve for side length AB, which is across from angle 60. Using our knowledge on the triangle, opposite to 60 is \(x\sqrt{3}\) . Thus, the answer is \(2\sqrt{3}\) .

Welcome! This formula is pretty useful!

To answer the first problem, we can use the clock formula, which is \(|30H-5.5M|\). Therefore, plugging the values in, we yield with \(|30(9)-269.5|=270-269.5=\boxed{.5}\)

Substitution: x+3y=-4, so x=-4-3y and 3(-4-3y)-7y=36, -12-9y-7y=36, -9y-7y=48, -16y=48, y=-3. and x=x+3(-3)=-4, x-9=-4, x=5. Thus, the ordered pair is (5, -3).

Elimination: We can also show this by elimination: multiply the first equation by 3, which yields, 3x+9y=-12 and 3x-7y=36. Subtract, 16y=-48, y=-3. Plugging the value of y back in to find the value of x, we get x+3(-3)=-4, x-9=-4, x=5. Thus, the ordered pair is (5, -3).

Here, we can use \(\frac{n}{1-r}\)  , so  \(\frac{1}{1-\frac{1}{2}}=\frac{1}{\frac{1}{2}}=\boxed{2}\) .