Mathematics - 31 December 2007

If A = 1/2h (b+c), what is the value of b???

A= 50
h= 4
c= 11

the answer choices are:

(1) 14
(2) 24
(3) 36
(4) 56

I already know the answer is 14. but when i do the math, i can't seem to get that value! can someone please help me do this problem? i don't want just the answer, i want you to show the work too! please help! thank you so much!!!

2007-12-31 18:56:35 · 7 answers · asked by ivory_plr 4

Thank you for ur answer......

2007-12-31 18:54:45 · 2 answers · asked by champscience 4

2007-12-31 18:51:13 · 3 answers · asked by Anonymous

2007-12-31 18:43:44 · 8 answers · asked by Stephanie W 1

Which one is an integer?

2.5, 1/2, -1/2 or -2?

2007-12-31 18:28:04 · 15 answers · asked by Anonymous

what is an interger and what are some examples of one? how do i compare them?

2007-12-31 18:26:08 · 11 answers · asked by Anonymous

algebra

2007-12-31 18:23:42 · 6 answers · asked by Tim . 2

where would you put NEGATIVE "pi" on a numberline numbered -5 through 5?

2007-12-31 18:23:30 · 4 answers · asked by Anonymous

2007-12-31 18:17:59 · 9 answers · asked by Torn Wings 6

66 is 56% of what numberr

2007-12-31 17:49:01 · 7 answers · asked by K <3 1

The certices of a triangle are A(4, -3); B(-6, -3); and C (-1, -8).

2007-12-31 17:28:35 · 4 answers · asked by Tiá»?u Bảo 2

...and find the slope of the tangent line at the point(s) of intersection.

2007-12-31 17:15:06 · 3 answers · asked by mathstudent 2

whats the equation of the line perpendicular to the line y = 1/2(x) - 3 and passes through the point (1, 5)?

2007-12-31 17:12:31 · 5 answers · asked by Dusk 1

2007-12-31 16:55:45 · 9 answers · asked by Dr. Pepper 2

I'm doing year 11 accounting this year. Thats 14-15years old here. Is it hard?

2007-12-31 16:47:58 · 11 answers · asked by Anonymous

2007-12-31 16:39:27 · 5 answers · asked by Big Country 1

A rectangle is inscribed in the triangle bounded by the x-axis and the lines whose equations are 3x+4y-24=0 and 3x-2y+12=0. Express the area of the rectangle as a function of the height and find the height for which the area is largest.

how do i do this and what does it mean by expressing as a function?

2007-12-31 16:27:33 · 3 answers · asked by Dusk 1

add with tax

2007-12-31 16:23:21 · 4 answers · asked by --- 2

1.) √4x²+4y²
2.) √x²-6x+9
3.) ³√a³+3a² b+3ab² +b ³
4.) √12a/x² + 4b/x

please help me i cant understand this

2007-12-31 15:34:28 · 2 answers · asked by Anonymous

i need help this is very difficult

2007-12-31 15:30:20 · 3 answers · asked by BUGGZ 3

Steven has 100 ft. of fencing and wants to use it all to enclose a garden area. He wants the area to have the largest area possible. What will the perimeter of the garden be?
*****Tell me the steps on how to do this problem*****
********************Thanks in advance*******************

2007-12-31 15:10:18 · 5 answers · asked by ♥♪Kelly♪♥ 1

Find d^2y/dx^2 for y=(3x^2-1)^3

2007-12-31 15:05:48 · 2 answers · asked by Anonymous

If y = 1/1-x, find y', y", y''' and guess a formula for d"y/dx"

2007-12-31 15:02:48 · 4 answers · asked by Whats the Scoop? 2

You are visiting New York City and are allowed to travel to the top of the Empire State Building. You're curious to know how tall the building is and, rather than research the height of the building, you decide to put your Algebra 2 skills to good use and calculate the height of the building by experimenting. You spit over the edge of the railing (by letting the spit dangle and drop, thus imparting no initial velocity) and time how long it takes it to reach the ground. If it takes 8 1/8 seconds to land, how tall was the building?

This is a different type of problem. Haven't worked with these in class yet. We were supposed to figure it out over vacation.

2007-12-31 14:56:35 · 6 answers · asked by Merissa[Danielle] 2

a sum of money was shared between mr and mrs lin in the ratio 2:5. if the sum was shared in the ratio 5:2 instead, mr lin would receive $600 more. find the sum of money. please tell me how you got it and what you got as the answer. thanks.

2007-12-31 14:49:32 · 5 answers · asked by Withme989 1

2007-12-31 14:47:41 · 4 answers · asked by cmf242004 2

Solve the system by addition. 2x – 4y = 7 4x + 2y = 9

2007-12-31 14:44:02 · 8 answers · asked by cutter1890 1

the ratio of the number of boys to the number of girls in a group of students is 2:3. if 1/4 of the boys and 1/3 of the girls wear glasses, find the ratio of the number of girls who wear glasses to the number of boys who wear glasses. please tell me the answer & how you got it. Thanks.

2007-12-31 14:33:51 · 12 answers · asked by Withme989 1

A boat in distress launches a flare straight up with a velocity of 190 feet per seconds. Ignoring the height of the boat, how many seconds will it take for the flare to hit the water? What is the maximum height reached by the flare?

I did this so far.

h(t) = v t - 16t^2
h= 190t-16t^2.

I'm not sure where to go from here.

2007-12-31 14:04:59 · 3 answers · asked by Merissa[Danielle] 2

SHOW ALL WORK!!

the answer choices are

A. -1
B. 0
C.1
D. 4/3
E. 5/3

2007-12-31 14:02:05 · 7 answers · asked by Anonymous