That’s not a trick question in the least. It’s very easy to solve using the distance equation. You just have to be sure you’re plugging the right things in.
W = N + 6
N - 6 = 2W (?)
I zigged when I should have zagged on the dice question.
ultra where did I go wrong? 30 + 90 = 120, divided by two miles = 60mph.
Bob + 4 = Tracy
3B + 2 =Tracy
B = T-4
3(T-4) + 2 = T
3T-12 + 2 = T
3T - 10 = T
5 = T
Tracy is five, Bob is one?
My answer is the same as yours:
D[sup]2[/sup]=729/2
So what would your solution be? ∞? If so, then your Algebra I course was way harder than mine.
Enjoy,
Steven
I’m sorry, I don’t understand the question. The house is twice as old as the oven is now?
Your first equation isn’t right, so fix that and work from there.
Again, you’re having problems with what gets multiplied by three. Your first equation is right, your second equation needs work.
It’s something to do with multiples of 25, right?
In order to average 60 mph for the whole trip, she needs to cover the two miles in two minutes. Since she’s driven the first mile at 30 mph, she’s taken two minutes to do so. Therefore, it’s not possible for her to average 60 mph for the whole trip.
I said it was a hard problem, but yes, it’s definitely doable with a background in algebra I.
The first digit is x. So the second digit is x - 2, the third digit is x - 4, and the fourth digit is x - 6. The fourth digit is also y (y is the fifth digit) - x - 4.
I have no idea where to go from there.
I’m having a hard time expressing the problem in algebraic terms. What would it look like?
It has to do with multiplying, but not with 25.
Plug in the three possible values for X and see what happens.
Use d = rt. For the first leg, you get 1 = 30t, which gives t = 1/30 hour, or two minutes. Then use d = rt again to get 2 = 60(t + 1/30), which gives 1/30 = t + 1/30, and there’s no solution.
W - 6 = N? Isn’t that the same as W = N + 6?
For Bob and Tracy, I’ve got either 3T = B-2 or T = 3B - 2. If neither one is right I’m stuck.
Nope. Reread the first “if” sentence again.
Sorry, neither one is right.
T = 3 (B - 2)
975,386
Shirts:
W + 6 = N
N + 6 = 2W
God, I feel so stupid. Thanks for your patience, folks.
Tracy is 9
Bob is 5.
Correct! Yay!
No prob – I’m actually revelling in the oddness of my coaching someone in math. (I did fine in HS math and actually test well in it, but never took any at the college level, and I definitely don’t think of myself as the math type.)
That said – take one more look at the shirts problem. Note that any equation you come up with has to involve a change in number (6) on both sides of the equation, because the shirts don’t disappear, they go from one person to the other.
Does that help?
Yes! high-fives ivylass
W - 6 = n + 6
n - 6 = 2w + 6