Mathematics - 8 July 2007

How do you do this. The directions say solve and check the equation. Begin work y rewriting the equation without fractions.

the problem is

7y/15 -5 = y/5 -1

please show you work so that i understand this problem.

thanks.

2007-07-08 16:22:47 · 5 answers · asked by Chris S 2

There were 50 cookies and 40 carrot sticks served as refreshments. Each case member had the same number of cookies and the same number of whole carrot sticks, and nothing was left over. the drama teacher did not eat. What is largest number of case members that might have been at the party?

2007-07-08 16:07:18 · 2 answers · asked by Anonymous

2007-07-08 16:04:13 · 4 answers · asked by silo81 2

hi, i have a math test tomrrow and i cant figure out these questions on my review sheet.

1. determine the equations of the lines with slope-5 that intersect f(x)= -7x^2 -5x +4 once, twice or never.

2. also, how do you "solve the system" (i think they mean find the points of interesection). between y=4(x-2)(x+5) and y=-4x+44 ?

3. and this quick one. solve for x. 0= -5(x-3)^2

4. how do you know if two lines have more than one intersection?

i lkeep doing it and keep getting the wrong answers..




ANSWERS:
------------------
1. y=-5x +k, k=4, one solution, k> 4 no solutions, k<4 two solutions.

2. (-7, 72) and (3,32)

3. 3 plus/minus squareroot of 2. approx 1.6 or 4.4

2007-07-08 16:04:07 · 4 answers · asked by mystery_girl07 2

2007-07-08 15:56:19 · 7 answers · asked by hannieljoseph 1

Stephan conjectured that both 13-year and 17-year locusts came out that year. Assume Stephan's conjecture is correct. How many years will pass between the years when both 13-year and 17 locusts are out at the same time?

2007-07-08 15:53:45 · 1 answers · asked by Anonymous

(x/x+5) + (5x/x-5)

2007-07-08 15:46:40 · 4 answers · asked by seahawk_1614 1

Find two consecutive positive integers such that the sum of their squares is 85.

2007-07-08 15:27:55 · 5 answers · asked by Robyn H 2

The graph has the side lengths of:

4, 5 and x

2007-07-08 15:27:44 · 4 answers · asked by Anonymous

2007-07-08 15:27:03 · 5 answers · asked by ? 3

using this answer what is the probability he gets a hit in 26 consecutive games..(if u answer this please try to explain the process)

2007-07-08 15:24:21 · 2 answers · asked by daniel san 1

1.If the ratio of the area of equilateral triangle A to the area of eq. triangle B is 100 to 25, then what is the ratio of their altitudes?

2. If the legs of an isos triangle are 13 inches long and the length of the altitude to the base is 12 in, what is the triangle's area?

3. A right triangle has an area of 100. If a segment is drawn though the midpoint of the triangle's legs, a new smaller triangle is formed. What is this triangle's area?

4.What is the altitude from the right angle of a triangle whose sides have lenghts 6, 8, 10?

5. The ratio of the lengths of the hypotenuse of 2 right triangles is 5 to 8. What is the ratio of the triangles' areas?

6. When 2 diagonals are drawn though a parallelogram, triangles are formed. If an area of one triangle is given, how can you find the area of a triangle adjacent to it?

7. How many right triangles have a hyp of lngth 10?

8. If a triangle has sides 6 and 8, what is the max area of this triangle?

2007-07-08 15:17:55 · 3 answers · asked by Anonymous

(3-i) (-6 + i)

2007-07-08 15:13:48 · 5 answers · asked by Anonymous

Who is the most brilliant? John Nash proved some topological embedding theorems and won a Nobel prize. On the other hand Steve Nash has two MVP's and has led the league in assists many fold. John had a movie about him where he goes crazy, but we have all seen some incredible behind the back passes from Steve - which are just Crazy.

2007-07-08 15:13:06 · 1 answers · asked by iliketohide 2

2007-07-08 15:12:34 · 2 answers · asked by ? 3

(x+5/4) divided by (x2+5x)

2007-07-08 15:10:28 · 1 answers · asked by Anonymous

27^ 4/3

2007-07-08 15:05:50 · 7 answers · asked by Anonymous

27x+4=40x^2

2007-07-08 14:55:07 · 4 answers · asked by Anonymous

√196

my answer:
8²*3=64*3=196
√64*√3=√8*√8*√3-reduce
=√4*√4*√3-reduce
=√2*√2*√3

=4√3
The correct anwser is 8√3
Nopte: 8² is a perfect square of finding squaroots.

Why is my anwser wrong?

2007-07-08 14:38:59 · 7 answers · asked by Anonymous

ok so I have these 2 math questions that I need help on cause I don't understand it at all. So if you could help me it would be great!

It says

use the expression p + r x p to calculate the total cost of the following.

1) a sweather costs $ 29.95 with sales tax of 6 %.
What is the total cost of the sweater?

2) A car costs $11,000 with sales tax of 8 %.
What is the total cost of cars?

thank you so much to everyone who helps me

2007-07-08 14:23:35 · 6 answers · asked by Anonymous

2x-3y+4z=0

how do u do this?

2007-07-08 14:20:24 · 2 answers · asked by nemahknatut88 2

The function f(x) = x / (x2 - 4) has asymptotes at?

2007-07-08 14:19:28 · 5 answers · asked by Sarah K 1

Can someone help me with this question?

2007-07-08 14:10:46 · 5 answers · asked by Mega 1

How do you find these points (-2,-1) (1,5) (3,10) lie on the same line without plotting the points on a graph?

2007-07-08 14:04:48 · 10 answers · asked by Okay.... 3

2007-07-08 13:51:13 · 8 answers · asked by Anonymous

A small company produces both standard and deluxe playhouses. The standard playhouses take 12 hours of labor to produce, and the deluxe playhouses take 20 hours. The labor available is limited to 800 hours per week, and the total production capacity is 50 items per week. Existing orders require the company to produce at least 10 standard playhouses and 15 deluxe playhouses per week. Write a system of inequalities representing this situation, where x is the number of standard playhouses and y is the number of deluxe playhouses. Then graph the system of inequalities below.

2007-07-08 13:50:28 · 1 answers · asked by Jessica L 1

You are driving on a trip of 2709 miles. You begin the trip with a full tank of gas and after traveling 412 miles, you refill the tank for $22. 86. How much should you plan to spend on gas the entire trip? please answer! thank you!

2007-07-08 13:14:37 · 9 answers · asked by camille_carson 1

lim as x-> 0

(sin(x^2+x)) / x

Find the limit and show work, i don't get it.

2007-07-08 12:32:02 · 4 answers · asked by Zywiec 2

y= (x+1)^2((e^x)-1)^3/((2x^3)-5)^4

2007-07-08 12:25:45 · 2 answers · asked by jordan 2

find (a) the directrix, (b) the focus, and (c) the roots of the parabola y = x^2 - 5x + 5

2007-07-08 12:22:20 · 2 answers · asked by Sara 3