Answer:
Option B) w = 4
Step-by-step explanation:
We have to find the value of w to make the given expression true.
The given expression is:
Option B) w = 4 is the correct answer.
If 25 cm' of a quantity of marbles has a mass of 45 g, calculate the density of the marble in kg/m
1 answer:
The density of the marble will be "0.18 kg/m³".
According to the question,
Volume of marbles,
- V = 25 cm³
By converting it into m, we get
- 0.25 m³
Mass,
- M = 45 g
By converting it into kg, we get
- 0.045 kg
As we know, the formula:
→
By substituting the values, we get
→
→
Thus the answer above is correct.
Learn more about density here:
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Answer:
Rayshawn originally had $30.
Step-by-step explanation:
i) Rayshawn has a certain amount of money. Let us say this amount is $x.
ii) Rayshawn spends $20 which means that he is left with $(x - 20)
iii) it is also given that amount of money left after spending $20 is of the original amount, $x, the amount remaining is
.
iv) from the information given in ii) and iii) we get
$(x - 20) = , Therefore we get 3x - 60 = x , therefore 2x = 60,
Therefore x = $30. Rayshawn originally had $30.