Mathematics - 13 June 2007

Solve: The quotient of a number and 8 is 31.
~Thanks!

2007-06-13 13:43:39 · 5 answers · asked by [♥] 4

2007-06-13 13:42:35 · 7 answers · asked by cortezgerson 2

A box with a square base and no top must have a volume of 10 000 cm3. If the smallest dimension in any direction is 5 cm, then determine the dimensions of the box that minimize the amount of material used.

Please show your work.

The answer is 27.14 cm x 27.14 cm x 13. 57 cm

Thank you

2007-06-13 13:42:13 · 3 answers · asked by Anonymous

what is the value of x?

2007-06-13 13:38:49 · 21 answers · asked by Korina O 2

The volume of a square-based rectangular cardboard box is to be 1000 cm3. Find the dimensions so that the quantity of material used to manufacture all 6 faces is a minumum. Assume that there will be no waste material. The machinery avaiable cannot fabricate material smaller in lenght than 2 cm.

The answer is 10 cm x 10 cm x 10 cm

Please show your work. Thank you.

2007-06-13 13:37:53 · 3 answers · asked by Anonymous

what is the value of a?

2007-06-13 13:37:13 · 11 answers · asked by Korina O 2

2007-06-13 13:33:19 · 10 answers · asked by JeususismyRock! 1

2007-06-13 13:30:21 · 5 answers · asked by nikki 1

2. cot 410 degrees=
A. -tan 50 degrees
B. tan 50 degrees
C. cot 310 degrees
D. tan 310 degrees
E. cot 50 degrees

please explain if possible. and if you know the fundamentals of pre calculus please let me know because i need to study for a test and i vaguely remember anything from pre-calculus.
thank you. any help will be greatly appreciated.

2007-06-13 13:28:32 · 4 answers · asked by j a 1

When I put ^2 that means it is squared.

2007-06-13 13:24:48 · 5 answers · asked by Christie 1

The equation 5x2 - 6xy + 5y2 = 16 represents an ellipse.

A) Find dy/dx at (1, -1)

B) Find two points on the ellipse at which the tangent is horizontal.

Please show work. Thanks

2007-06-13 13:22:05 · 3 answers · asked by Anonymous

To determine the number of trout in a lake, a conservationist catches 151 trout, tags them and throws them back into the lake. Later, 52 trout are caught; 13 of them are tagged. How are in the lake?

2007-06-13 13:16:01 · 2 answers · asked by Anonymous

Ok. I know how to the Interval of Convergence of the power series. But when I check for the endpoints. Is it true that if it is centered at 0, 1 end converges and the other diverges. And if it is set at =/ 0 then either both converge or both diverge? If that is not the case isn't there some rule like that to determine?

2007-06-13 13:14:15 · 2 answers · asked by dukebdx12 3

plzz help me on the following:

ok there is no square root symbol so ill use parenteses around the number that is supposed 2 b in the square root symbol


(125) - (10) divided by (5)

2007-06-13 13:11:54 · 7 answers · asked by Y 5

25 = 4 + (155 sin 18)t - (1/2)(32)t^2

2007-06-13 12:18:42 · 2 answers · asked by Anonymous

this is a statistics problem, the end should say what is the probability the life span is less than 15,000 hours

2007-06-13 12:13:53 · 3 answers · asked by Anonymous

2007-06-13 11:12:07 · 8 answers · asked by Nicole 1

I really need help the question is that an island is 85m from a straight shoreline at the closest point and the nearest electrical connection is 250m along the shore from that point. It costs twice as much to install cable across water as across land what would be the least expensive way to install cable? Any ideas on how to start off the question would be appreciated.

2007-06-13 10:40:39 · 5 answers · asked by Lil 1

Hitting a baseball
-A baseball is hit when it is 4 ft above the ground. It leaves the bat with an initial velocity of 155 ft/sec, making an angle of 18 with the horizontal. At the instant he ball is hit, an instantaneous 11.7 ft/sec gust of wind bloes in the horizontal direction against the ball, adding a component of -11.7i to the ball’s initial velocity. A 10-foot-high fence is 380 ft from homeplate in the direction of the flight.

b) How high does the baseball go, and when does it reach maximum height?
c) Find the range and flight time of the baseball.
d) When is the baseball 25 ft high? How far (ground distance) is the baseball from home plate at that height?

I need help plotting the problem in a graphing calculator. What mode or function do i use, how can i find the intercepts. Please help me or guide me in how to use the graphing calculator. Thank you

2007-06-13 10:38:05 · 3 answers · asked by Anonymous

2007-06-13 10:31:21 · 9 answers · asked by Anonymous

OK, thanks for the help with finding the actual derivative. So I set it = 0, which gave me

6cosx 4 = 0

After solving that, I was left with

cosx = -2/3

Now, would I have to take out the cosine by using the arc-cosine function, leaving me with x = .841? I plugged f'(x) into my calculator and it doesn't have a constant positive slope, so I definitely did something wrong. Please help!

2007-06-13 10:25:42 · 2 answers · asked by Anonymous

2007-06-13 10:22:58 · 4 answers · asked by Anonymous

I got this question that I have no idea what to do with:
A man has $250,000. He has two bank accounts, one with 4% interest, the other with 5% interest. The bank with 4% interest earned him $3,286 more than the 5% interest account. How much money did he invest in each account?

Sorry to bug you with this everybody, but I really need help. I'm stumped =( It's for my summative assessment which is 15% of my final grade

2007-06-13 10:19:14 · 4 answers · asked by linzayy 1

Why?

2007-06-13 10:14:11 · 5 answers · asked by Anonymous

how do you find that out?

2007-06-13 10:12:13 · 6 answers · asked by Stefani ♥ 2

2007-06-13 10:11:35 · 3 answers · asked by Pseudo Obscure 6

5
∑k(k-1)
k-0

as a summation with the index variable (k) starting at 1.

2007-06-13 10:11:02 · 3 answers · asked by Anonymous

a linear regression equation for best fit between the students attendence and the degree of success in school is h= 0.5x +68.5 the correlation coefficient for these data woulde be?
1) 0 2)r=0
3)r= -1
4)-1

2007-06-13 10:09:18 · 6 answers · asked by Anonymous

2007-06-13 10:05:01 · 5 answers · asked by attilioi t 1

2007-06-13 10:00:16 · 11 answers · asked by Alexander 6