Answer:
Step-by-step explanation:
X/25=16/x
Cross multiply to get
X^2=square root 400
Un square to get 20
It’s 20 meters
Answer:
279936
Step-by-step explanation:
i put it in the calculator. I honestly get how to do the exponents themselves but not dividing with them.
20.3 * 9 = 182.7
Hope this helps! :)
Answer:
12075
Step-by-step explanation:
35 x 345 = 12075
When the concentration of a solution is expressed in weight percentages, that is just equal to the mass of solute over the mass of the total solution. For a solution weighing 210 grams, 5% of it is salt. That is equal to
210*0.05= 10.5 g salt
The rest of the amount, determined by difference, is the amount of solvent which is water.
water = 210-10.5 = 199.5 g salt
To solve for the new concentration, you add up 15 g to the already existing 10.5 g of salt in the solution. The water, on the other hand, remains constant.
Concentration = (15+10.5)/(210+15) = 0.1133 or 11.33%