Conventional US measurement would be feet and inches high. And Metric measurements would be meters.
9514 1404 393
Answer:
450 L
Step-by-step explanation:
Let x represent the number of liters of 70% solution needed. Then the amount of 15% solution needed is (550-x), and the total amount of acid in the mixture is ...
0.70x + 0.15(550-x) = 0.60(550)
0.55x + 82.5 = 330 . . . . simplify
0.55x = 247.5 . . . . . . . . . subtract 82.5
x = 450 . . . . . . . . . . . divide by 0.55
450 liters of 70% acid solution must be used.
Answer:
2.25$ or 2 singles & a quarter
Step-by-step explanation:
50+20+20+20+20+5+5+5+5+5+5+5=165
162.75-165=2.25
Your answer would be ![\frac{1}{w^{35} }](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bw%5E%7B35%7D%20%7D)
This is because (w^5)^-7 expands to give w^-35 because you multiply the exponents. When you have a negative exponent, this can also be written as a reciprocal, i.e. x^-2 = 1/x². This means that we can write w^-35 as 1/(w^35), which doesn't include any negative exponents.
I hope this helps! Let me know if you have any questions :)