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3 years ago

The dot product of u with itself is 12. What is the magnitude of u?

1 answer:

5 0

Dot product is
a*b = |a|*|b|*cosα.
In our case
u*u =|u|*|u|*cos 0
u*u =|u|*|u|
12=|u|²
|u|=√12=√(4*3)=2√3
Answer: D. 2√3

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denpristay [2]

Answer:

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3 years ago

Change 2.6 from decimal to fractions show explanation

noname [10]

Answer:

Step-by-step explanation:

The 2 in 2.6 is in the ones place so we know that it equals 200. The 6 in 2.6 is in the tenths place so we know that it equals 60. Add 200 with 60 to get 260/10. The denominator is 10 because 2.6 only extends to the tenths place.

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2 years ago

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alexandr402 [8]

Answer:

The correct option is V = one-third (6) (4) (8).

Step-by-step explanation:

The volume of a rectangular pyramid is:

$V=\frac{1}{3}\ l\times b\times h$

Here,

V = volume

l = length

b = base

h = height

The information provided is:

l = 6 inches

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Compute the equation of the volume of a rectangular pyramid as follows:

$V=\frac{1}{3}\ l\times b\times h$

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Thus, the correct option is V = one-third (6) (4) (8).

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3 years ago

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taurus [48]

The answer to this question will be C

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3 years ago

Write the set of real numbers from -10 through 10 in interval notation.

alexdok [17]

Answer:

$Interval: [-10.10]$

Step-by-step explanation:

Given

Set: -10 to 10

Required

Write as interval notation

We start by writing the given parameter as an inequality

$Inequality: -10 \leq x \leq 10$

The direct representation of $\leq$ and $\geq$ in interval representation of sets is $[$ and $]$ , which shows that the beginning and end of the interval are inclusive;

So, the above inequality in interval notation is:

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