2 years ago

What is the surface area of a 27 centicube cube with 3 cm sides

Mathematics

1 answer:

tatyana61 [14]2 years ago

5 0

54
Cube surface area formula is 6xa^2 so it would 6x3^2

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Any one know how to find the roots of an equation?

soldier1979 [14.2K]

So what you do is
make into ax^2+bx+c=0 form

add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
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x= $\frac{2+/- \sqrt{4-(36/2)} }{2}$
x= $\frac{2+/- \sqrt{4-(18)} }{2}$
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answer is C

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2 years ago

The stem and leaf plot shows the shoe sizes of 22 students in Mr. Millford’s first period class.

storchak [24]

Answer:

Step-by-step explanation:

because a ste and leaf plot have the value for 2

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2 years ago

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Prove the quotient rule. hint: you can do this directly, but it may be easier to find the derivative of 1/x and then use the cha

Bess [88]

The quotient rule is
d(u/v) = (u dv - v du) / u2

d(u/v) can written as
d( u (1/v) )

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2 years ago

Please help me find what ? Is

kotegsom [21]

Answer:

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2 years ago

If the area of Bianca’s rectangular backyard patio is represented by the expression x2−18x + 81, and the length of the patio is

frosja888 [35]

Answer:

a square backyard with width (x - 9)

Step-by-step explanation:

x²−18x + 81 = x² - (2 x 9) x + 9² = (x - 9)²

width = area / length = (x - 9)² / (x - 9) = x - 9

Length = width

This is a square backyard

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3 years ago