1+1= 2
Big brain >:3 Ty for the points tho ^^
Answer
The area is 54cm² To get the area i split the shape into two shape both having a length of 9in and a width of 3in. I calculate the area for one by using lxw=area and get 27 and times that by two to get 54.
When calculating the area for this object you get 54 and you add the ²symbol because its area is not one dimensioned it is two dimensioned or length times width not just length, so you use the ² symbol to show that.
Answer:
The sound intensity is about 101.9 dB
Step-by-step explanation:
Sound intensity is the amount of sound energy per unit area.
The intensity of the dog bark is 10⁻⁵ W/in². The intensity of sound in decibels is given by:

I = 10⁻⁵ W/in² = 0.0155 W/m²
Therefore:

The sound intensity is about 101.9 dB
Answer:
.15 mph
Step-by-step explanation:
3 miles/ 20 hours or 3/20
Answer: y = -4.5
Step-by-step explanation:
<u>Given expression</u>
-3 = 15 + 4y
<u>Subtract 15 on both sides</u>
-3 - 15 = 15 + 4y - 15
-18 = 4y
<u>Divide 4 on both sides</u>
-18 / 4 = y / 4

Hope this helps!! :)
Please let me know if you have any questions