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sdas [7]
3 years ago
11

In the figure to the right, ABCD is a rectangle. Find the area of △ABC, if the area of △AOD is 10.

Mathematics
1 answer:
ehidna [41]3 years ago
5 0
Assuming BOD and AOC are straight lines.

Area of the rectangle = 4 x ΔAOD
Area of the rectangle = 4 x 10
Area of the rectangle = 40 unit²

Area of ΔABC = 1/2 x 40 
Area of ΔABC = 20 unit²
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Luke bought three canvas boxes to store his papers. The canvas boxes have dimensions of 12 inches by 10 inches by 12 inches. Wha
irga5000 [103]

Answer: 4,320 inches cubed.

Step-by-step explanation:

step 1----- Volume of 1 canvas box

Volume of solid  for a rectangular box = Length x width xHeight

where  Length= 12inches,

Width= 10 inches

Height= 12 inches

Volume  of a Canvas box= 12 X 10 X 12= 1440 inches cubed

Step 2== Volume of 3 canvas boxes

1 canvas box = 1440 inches cubed

therefore 3 canvas boxes =

1440 x 3= 4320 inches cubed.

8 0
3 years ago
Read 2 more answers
A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the side
alexgriva [62]

Answer:

A = 54.8 - (1200/x) - 2x

Step-by-step explanation:

Given <em>x</em> the wide and <em>y</em> the height, we have

x*y = 50

⇒  y = 50/x

The area of the printed region is A = w*h

where

Wide: w = (x-2*1.2) = x-2.4

Height: h= (y-2*1) = y-2

then

A = (x-2.4)(y-2) = xy - 2.4y - 2x + 4.8 = 50 - 24*(50/x) - 2x + 4.8

⇒  A = 54.8 - (1200/x) - 2x

5 0
3 years ago
Help me on this question please​
Luba_88 [7]
Sorry hun I’ve never learned that
5 0
2 years ago
14-3(5t-12)=1-(20t+1)<br> How am I supposed to do this?
Nuetrik [128]
Expand by multiplying out:

14-15t + 36 = 1 -20t -1,
Because of the minus before the bracket, it changes the sign inside the bracket
-15t + 20t  = 1-1-14-36  Rearranging the ts on one side and the numbers on other
                                   side.
5t = -50  Divide both sides by 5.
t =  -50/5
t = -10.


5 0
3 years ago
-3(6) + 2(3) - 18 = 6<br><br>Is this incorrect or correct and why ?​
KiRa [710]
It is incorrect because when you times a negative by a positive. It is a negative number.
6 0
3 years ago
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