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torisob [31]
3 years ago
10

For the vectors Bold uequalsleft angle negative 8 comma 0 comma 1 right angleand Bold vequalsleft angle 1 comma 3 comma negative

3 right angle​,calculate proj Subscript Bold v Baseline Bold uand sca l Subscript Bold v Baseline Bold u.
Mathematics
1 answer:
trapecia [35]3 years ago
4 0

Answer:

Step-by-step explanation:

Given that there are two vectors U = (-8,0,1)

V = (1,3,-3)

To find projection of u on V and also projection of V on U

First let us find the dot product U and V

U.V = -8(1)+0(3)+1(-3)\\= -11

Projection of U on V =\frac{U.V}{|V|} \\=\frac{-11}{\sqrt{1+9+9} } \\=\frac{-11}{\sqrt{19} }

Similarly projection of V on U

=\frac{U.V}{|U|} \\=\frac{-11}{\sqrt{64+0+1} } \\=\frac{-11}{\sqrt{65} }

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30 men repair a road in 56 days by working 6 hours daily. In how many days 45 men will repair the same road by working 7 hours d
svetoff [14.1K]

Step-by-step explanation:

(30 men, 56 days, 6 hours daily)

=> (30 men, 48 days, 7 hours daily)

=> (45 men, 32 days, 7 hours daily)

Hence it will take 32 days.

5 0
3 years ago
How do i solve for this?
vekshin1
For one set the two equations equal to eachother and solve from there. 2 is 45
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6 0
2 years ago
Explain how you find it
aliina [53]

Answer:

x = 39

Step-by-step explanation:

there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two

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3 years ago
I need help asap plz
leva [86]

Answer: it’s C

Step-by-step explanation: because my teacher told me

4 0
2 years ago
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12.13=n+1.4 answere
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