This is a classic example of where you would need to use the process of elimination. Let's start with answer A, 3 classes.
If A were to be correct, 3 classes of 45 minutes each would be 132 greater than the amount he paid, 3 classes worth $12. We could easily express this as a math equation:
45 * 3 = 132 + (12 * 3) Then, all you would have to do is simplify:
135 = 132 + 36
135 = 168
Obviously this equation isn't true, and you can continue with answer choice B.
But wait... there's a better way. Using this starting equation, we can come up with a formula to solve for c, the number of classes. Let's take our starting equation:
45 * 3 = 132 + (12 * 3) Now, let's turn all the 3s into cs.
45c = 132 + 12c Then, using algebra, we can solve this equation.
-12c - 12c
33c = 132
33c/33 = 132/33
c = 4
And finally, we have our answer, B! I hope both methods help you in your further studies.
Answer:
7,273 Pesos
Step-by-step explanation:
1 Peso = $0.055
The formula below converts pesos to dollars:
1 Peso x 0.055 = $1
The formula below converts dollars to pesos:
$1/0.055= 1 Pesos
We use the second formula because we are coverting
<em>from dollars to pesos.</em>
$400/0.055=7,273 Pesos
Step-by-step explanation:
now, really !
you don't know, if 0 is larger than 16.4 or smaller than -16.4 or ... ?
0 is right between any negative and positive numbers. in integer view between -1 and +1.
0 is therefore larger than any negative number, and smaller than any positive number.
and -0 = +0 = 0
so, I hope, the position of 0 on the line of all numbers is now clear.
and it is also clear that when you multiply 0 with something else, the result is always 0. right ?
so, of course,
a
is correct.
0 is not greater than 16.4 (kills b and c).
0 is not smaller than -16.4 (kills d).
Answer:
Step-by-step explanation:
The volume of a cylinder can be calculated with the following formula:
Where "r" is the radius and "h" is the height.
The volume of a sphere can be found with this formula:
Where "r" is the radius.
Then, volume of the empty cylinder is:
And the volume of the ball is:
Finally, you need to subtract them in order to calculate how much water is in the cylinder:
There isn’t enough information to answer this question