Answer:
-509
Step-by-step explanation:
1. Subsitute 5 for a in the expression. -6(5)^3+8(5)^2+8(5)+1
2. -6(125)+8(25)+40+1
3. -750+200+41
4. -509
Answer:
12 inches
Step-by-step explanation:
So you know that the perimeter of a picture frame (a rectangle) is 2 widths plus 2 lengths.
Let x= lengths and w= widths
From the question we already know that w=7, so we can set up an equation that says:
2x + 2w = 38
2x + 2(7) = 38
2x+14 = 38
2x +14 -14 = 38-14
2x = 24
2x/2 = 24/2
x= 12
Since x= lengths =12
the length of the frame is 12 inches.
Acute angle is your answer
Answer:
Use the formula -b/2a
Step-by-step explanation:
Answer:
25pi or 78.54
Step-by-step explanation:
The formula for the area of a circle is pi*r^2
We know that r=5ft
A=pi*(5ft)^2
A=25pi ft2
You can write it as 25pi ft2 but you can also write as 25*pi ft2 which is about 78.54 ft2
Hope that I helped :)
