Answer:
1 ft³
Step-by-step explanation:
The formula for the volume of a cube is
Vol. = l³ = l × l × l
If l = 1 ft,
V = 1 ft × 1 ft × 1 ft
V = 1 ft³
Answer: ∠A= 
Step-by-step explanation:
Since we have given that
CD bisects m∠ACB,
⇒ m∠ACD= m∠DCB =x (say)
And, AB=BC, m∠BEC=90°, and m∠DCE=42°
So,
m∠CAD=m∠ACD
In ΔDCE,

Now, in ΔACD,

Hence , ∠A= 
2x - 3y + 6 = 0
<u> - 6 - 6</u>
2x - 3y = -6
2x - 2x - 3y = -6 - 2x
<u>-3y</u> = <u>-6 - 2x</u>
-3 -3
y = 2 + ²/₃x
Answer:
Step-by-step explanation:
To get from the top square to the bottom square, multiply by - 3 So the middle position of the bottom square is - 30. If you solve all of the top square, you can get the bottom square easily enough.
The diagonal of the top square adds to 13 + 10 + 7 = 30
The top line of the top square must add to 30 as well 13 + 11 + 6. Put 6 in the middle position.
The right hand vertical line must add to 30. 11 + 7 + 12 = 30
The middle row must add to 30. 10 + 12 + 8. 8 goes in the left position of the middle row.
Let's summarize what we have so far.
13 6 11
8 10 12
7
We can fill in the last two spaces by adding to 30
13 6 11
8 10 12
9 14 7
That completes the top magic square.
To get the bottom magic square, multiply by -3
- 39 - 18 -33
-24 -30 -36
-27 -42 -21