Answer:
50
Step-by-step explanation:
-2.5 × -20
negative multiply negative equals positive
(-) × (-) = (+)
so, the answer would be positive.
-2.5 × -20
= <u>5</u><u>0</u>
The first step is to find the CHANGE. This is done by subtracting the two values and taking the absolute value. Next step is to find the ratio of the change to the original and multiplying by 100% to make it a percentage.
So;
a) change = Ι60 - 25Ι = 35.
ratio of change to original = 35:25,
multiplying by 100% will give 35/25 × 100% = 140%.
Hence it is a 140% INCREASE.
b) change = | 30 - 66 | = 36
the ratio is 36:66
multiplying by 100% = 36/66 × 100% = 0.545454... ×100% ≈ 54.5%
Hence it is a 54.5% DECREASE.
Helpful?
Answer:
nitrogen is the solvent and oxygen is the solute
Step-by-step explanation:
Most of the time the solute will be present in a smaller quantity and the solvent will appear in a larger quantity.
0.004 is the probability of getting exactly 0 tails :)
