Homework Help ~ !!!

bunnyshadow • 10 October 2012 at 11:22 PM

Um... I need help on two problems. Anyone know?

Solve the formula for the indicated variable.

17. Area of a trapezoid: A = h/2(b1 + b2). Solve for h.

The one and two behind the Bs are small, but on the bottom of the letter. H/2 is a fraction.

18. Area of a rhombus: A = 1/2d1d2. Solve for d1

The one and two behind the Ds are small, but on the bottom of the letter. 1/2 is a fraction.

-_- I'm stuck.

goku • 10 October 2012 at 11:26 PM

@bunnyshadow What are the Bases for the Trapezoid? Or does it not specify?

rainbowkitty • 10 October 2012 at 11:28 PM

@bunnyshadow
Wha...? Sorry I'm in 5th grade XD

bunnyshadow • 10 October 2012 at 11:41 PM

@goku It doesn't say. 😋

@rainbowkitty Lolz. xD

nousernamesleft • 11 October 2012 at 1:45 AM

@bunnyshadow
Good luck! Usually we get values when we do it. What grade is it from?

tikimaki • 11 October 2012 at 1:51 AM

@nousernamesleft

You should be able to do this!

@bunnyshadow

I believe the second one is...

a = 1/2d1d2
a(d1) = 1/2d2
d1 = a / 2d2

nousernamesleft • 11 October 2012 at 1:57 AM

@tikimaki
My brain's dead. I just spent a day at school!

And I think the second one is actually:
a=1/2d1d2
2a= d1d2
2a/d2= d1

@bunnyshadow

duchess • 11 October 2012 at 2:01 AM

@bunnyshadow

17. Area of a trapezoid: A = h/2(b1 + b2). Solve for h.

2A=h(b1 + b2)
h=2A/(b1+b2)


18. Area of a rhombus: A = 1/2d1d2. Solve for d1

2A=d1d2
d1=2A/d2

Hope you understand my working 😊

tikimaki • 11 October 2012 at 2:02 AM

@bunnyshadow

First one:

h=2A/(b1+b2)

EDIT: Sorry this answer was given already, they posted before me.

bunnyshadow • 11 October 2012 at 9:49 AM

@tikimaki @duchess @nousernamesleft

Thank you ❤️