Answer:
c
Step-by-step explanation:
x*x=x^2
x*9=9x
x*3=3x
9x+3x=12x
9x3=27
x^2+12x+27
Answer:
It depends on what shape you have. Here are some formulas for different shapes.
Step-by-step explanation:
Rectangular prism: 2lw + 2lh + 2wh
Cylinder: 2 pi <em>r</em>² + 2 pi <em>rh</em>
Sphere: 4 pi <em>r</em>²
Cone: pi <em>r</em>² + pi <em>rl</em>
Square-based pyrimid: 1/2<em>lp</em> +<em>B</em>
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I hope this helps!
Answer:
= - 4 cm/s
Step-by-step explanation:
Let us revise the chain rule
If
= a and
= b, then
=
÷
= 
∵ y = x² + 1
- Use the differentiation to find 
∴
= 2x
∵ x = -1
- Substitute x by -1 in
∴
= 2(-1)
∴
= -2
∵
=
×
∵
= 2 cm/s
∴
= (-2) × (2)
∴
= - 4 cm/s
Answer:
it would be 75
Step-by-step explanation:
if add 10+ 10+ 30 + 25 its would be 75