258 miles / (65 miles per hour) = 4.0 hours
Can someone please help me with this one
I have no idea how to do this. And if you could explain how to do it please.
Note to poster:
This is a fun but infuriating integral. I made several attempts (double integrals, differentiating under the integral sign) on this the night before to no success. One of my attempts was very similar to John's solution, but I too made some error that I could not find. This should finally do it....
Frank was selling a new kind of shovel. He increased the original price of $80.00 by 20 percent. No one would buy them. He then reduced his new price by 10 percent. What is his latest price?
Well, I know of one particular niche. Mathematical modeling and simulation.
My former company used to employ a bunch of people with degrees in math and statistics. They would do something called PK/PD modeling, which was the mathematical modeling of how a drug affected the body and how the body affected the...
h² = 14² + 14²
h² = 196 + 196
h² = 392
h = 14 √2
1. Is 1.12 x 10^24 greater than 5.45 x 10^23 ?
2. Is 1.663 x 10^27 greater than 8.07 x 10^24 ? Thank you!
(in my opinion, 1 is 1.12 * 10^24 and 2. 1.663 x 10^27 but I want to make sure)
4.65 * 5 = 4.6 * 5 + 0.05 * 5 = 23 + 0.25 = 23.25
23.25 - 20 = 3.25
"the sum of a number and seven" --> n + 7
"double the number increased by 3" --> 2n + 3 ..... probably; plain English is ambiguous in this case
"...is the same as..." --> n + 7 = 2n + 3
About the English: The phrase "double the number increased by three" can be...
"double a number" --> 2x
"five less than double a number" --> 2x - 5
"....is thirteen" --> 2x - 5 = 13
That's basic two-step equation. If you haven't solved hundreds of those already...you will.
2x = 18 .... add 5 to both sides
x = 9 ..... divide both sides by 2
Twin brothers, Billy and Bobby, can mow their grandparents lawn together in 110 minutes. Billy could mow the lawn by himself in 40 minutes less time that it would take Bobby. How long would it take bobby to mow the lawn by himself?
I tried this multiple times and keep getting it wrong any help would be awesome