3 years ago

I need help with problems 27,28,29,

1 answer:

8 0

27 is D
28 is 42 hours
29 is H
tell me if it is right or not

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Vitek1552 [10]

The sum of the magnitudes will be the magnitude of the sum when the vectors have the same direction.

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3 years ago

Soloha48 [4]

Given :

A vector v = 10i - 24k.

To Find :

A vector of magnitude 3 in the direction of v = 10i - 24k.

Solution :

Unit vector in the direction of vector v is :

$\^{v}=\dfrac{v}{|v|}\\\\\^{v}=\dfrac{10i-24k}{\sqrt{10^2+24^2}}\\\\\^{v}=\dfrac{10i-24k}{26}$

Now , vector of magnitude 3 in direction v is :

$r=3 \^{v}\\\\r=3\times \dfrac{ (10i-24k)}{26}\\\\r=\dfrac{3}{13} (5i-12k)$

Hence , this is the required solution .

6 0

2 years ago

Law Incorporation [45]

7 packs will cost 1393

Step-by-step explanation:

one pack cost 199.now 199 × 7 =1393

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2 years ago

Oliga [24]

The mass should be 16.56 grams hope this helps

4 0

3 years ago

vesna_86 [32]

The answer would be 93.887

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3 years ago