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Lady_Fox [76]
3 years ago
6

The width of rectangular solid is 20ft, which is 4/5 of its length. The height of it is 2/9 of the sum of the length and width.

What is the volume of the rectangular solid?
V = ? ft to the third power
Mathematics
1 answer:
bogdanovich [222]3 years ago
7 0
Asked and answered elsewhere.
brainly.com/question/8807227
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If −1 is a zero of the polynomial p(x)=ax^3−x^2+x+4, find the value of a.
vitfil [10]

Answer:

a = 2

Step-by-step explanation:

given x = - 1 is a zero then f(- 1) = 0 , that is

a(- 1)³ - (- 1)² - 1 + 4 = 0

- a - 1 - 1 + 4 = 0

- a + 2 = 0 ( subtract 2 from both sides )

- a = - 2 ( multiply both sides by - 1 )

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8 0
2 years ago
The function f(x) varies directly with x and f(x)=12 when x=8
malfutka [58]
F(x) = kx
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k = 12/8 = 3/2

Required equation is f(x) = 3/2 x
4 0
3 years ago
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irina1246 [14]

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t

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∘

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Step-by-step explanation:

tan

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t

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t

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6 0
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Evaluate the dot product a⃗ ⋅b⃗ of a⃗ =3i^−8j^ and b⃗ =−2i^−6j^.
Mkey [24]
The "dot product" of two vectors has several different formulas.

Since you are given the x- and y-coordinates of both vectors a and b, we can apply the formula

a dot b  = ax*bx + ay*by, where ax=x-component of vector a, by=y comp of vector b, and so on.  

So, for the problem at hand, ax * bx + ay * by becomes

3(-2) + (-8)(-6) = -6 + 48 = 42 (answer).  Note that the dot product (or "scalar product" is itself a scalar.
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3x +1 = 4<br> Solve the equation
zmey [24]

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1=x

Step-by-step explanation:

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3 years ago
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