Answer:
B
Step-by-step explanation:
The mean is calculated as
mean = ![\frac{sum}{count}](https://tex.z-dn.net/?f=%5Cfrac%7Bsum%7D%7Bcount%7D)
= ![\frac{2.5+2.0+4.2+3.0+9.3}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B2.5%2B2.0%2B4.2%2B3.0%2B9.3%7D%7B5%7D)
=
= 4.2 Kg → B
Answer:
<h3>Maxwell's method is useful.</h3>
Actually, the way Maxwell is attempting to determine the volume is not wrong, according to Archimede's principle. Maxwell's method will measure the weight of the displaced water, which will be useful to determin the volume, because he already know the density of the water.
It would be better if he uses a heavier object to have a greater water displacement. Specifically, the Archimede's principle states:
Weight of displaced fluid = weight of the object (pennies) - weight of the object in fluid.
You are basically asking: is -18 greater than -14?
Then answer is no. -18 is less than -14, because the numbers are negative, and so -18 is farther from the origin than -14.
Another way to see this is by multiplying the inequality by -1 (and changing the inequality sign):
since
, then ![-14>-18](https://tex.z-dn.net/?f=-14%3E-18)
Answer:
It will be the bottom right one.
Step-by-step explanation:
This is because she has 7 plus some white ones which would be 7+x. And since she is giving each teacher 5 than that is 5 times 3.
The next step after distribution is isolating the terms with the variable at one side and the terms with no variables at the other. Then solve to get the variable.
-2a+32 = -24a-40-2a
-2a+24a+2a = -40-32
24a = -72
a = -3