scribepost 01.06.10

Here's my scribe post for today. I'm doing question 8.

Shahriar knows that the size of a computer monitor is based on the length of the diagonal of the screen. He thinks that the diagonal is not as large as the ad says. is he correct? Explain.

The ad says " GREAT DEAL 42-cm monitor on sale!"

ANSWER:
a²+b²=c²
25²+30²=c²
(25x25)+(30x30)=c²
625+900=c²
√1525=√c
39.05cm

Shahriar is correct. the ad was wrong. The exact length is 39.05 cm

sorry, no pictures.

PLEASE COMMENT :)

Scribepost for January 6

Today Mr.Harbeck said to do questions.

So i am going to do question #14 in page 113.

Noelle's Scribepost for Jan 5

YO, whats up guys. I'm supposed to do question number 15. Here was the question.
(no pictures, sorry)

the coordinate grid shown was drawn on centimetre grid paper. What is the length of line segment AB? Express your answer to the nearest tenth of a centimeter.

We have to find the length of a diagonal line on centimeter grid paper. In order to get from one point to the other point, you have to go up 4 squares and over 2 squares. So the length of the line is approximately 6 squares, because 4+2=6.

I know it's complicated without pictures, but there's my work.
COWMENT !

Larrisa's scribepost January 5 , 2010

A²+B²=C²
7²+5²=C²
(7x7)+(5x5)=C²
49+25=C²
Square root of 74=C²
8.6=C²
8.6=Diameter

The diameter of the circle is 8.6 cm.


COMMENT !

Scribepost for January 5, 2010

Question #16

What is the length of the red diagonal in the box? Express your answer to the nearest tenth of a millimetre.

a2 + b2 = c2
7 squared + 12 squared = c2
( 7 x 7 ) + (12 x 12 ) = c2
49 + 144 = c2
193 = c2
square root of 193 = square root of c2
13.9 mm = c2

a2 + b2 = c2
5 squared + 13.9 squared = c2
( 5 x 5 ) + ( 13.9 x 13.9 ) = c2
25 + 193.2 = c2
218.2 = c2
square root of 218.2 = square root of c2
14.8 mm = c2

The length of the red diagonal line is 14.8 mm.

THANKS TO JERIC AN JOMARI FOR HELPING MEE =D

Scribepost January.5 2009

Question #9
Tina wants to construct a path along the diagonal of her yard. What Length will the path be? Express your answer to the nearest tenth of a metre.






a 2 + b 2 = c 2
6 2 + 12 2 = c 2
(6x6)+(12x12) = c 2
36 + 144 = c2
The square root of 180 = the square root of c 2
13.4 = c

The length of the path is 13.4 m



sooo yeah comment =)

April's scribepost for Jan.5'10.

First, we have to find the length of b.











Next, we have to find the length of c.












Simple sentence answer: The length of b is 4m, and the length of c is 7.2m.

THANKYOU FOR READING MY SCRIBEPOST. PLEASE LEAVE A COMMENT. :)