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Art [367]
3 years ago
15

Given that v = (5,-4, 4) and w = (9-2,7) , evaluate v • w.

Mathematics
1 answer:
yuradex [85]3 years ago
4 0

Answer:

a

Step-by-step explanation:

Given

u = (x₁, y₁, z₁ ) and v = (x₂, y₂, z₂ ) then the dot product is

u • v = (x₁ x₂ ) + (y₁ y₂ ) + (z₁ z₂ )

Then

v • w

= (5 × 9) + (- 4 × - 2) + (4 × 7)

= 45 + 8 + 28

= 81 → a

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masya89 [10]

Answer:

26

Step-by-step explanation:

Check answer:

14+12= 26

26-12=14

8 0
3 years ago
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John's temperature is 98.6 degrees.<br> Positive or Negative
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Answer:

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Step-by-step explanation:

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If natalie and her friends decide to rent 4 lanes at reguler cost for a party ten people need to rent shoes and 4 people are mem
taurus [48]

The question is missing a tabular data. So, it is attached below.

Answer:

The total cost for the party is $74.50.

Step-by-step explanation:

Given:

Lanes rented at regular cost = 4

Cost of 1 lane rented  at regular cost = $9.75

Cost of 1 lane rented for members = $7.50

Cost of 1 shoe rental at regular cost(non members) = $3.95

Cost of 1 shoe rental for members = $2.95

Since, lanes are rented at regular cost, we use unit rate at regular cost

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Non members who rented shoes = 10 - 4 = 6

So, 4 members and 6 nonmembers rented shoes.

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= 39 + 11.80 + 23.70

= 50.80 + 23.70

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Therefore, the total cost for the party is $74.50.

5 0
3 years ago
A student inscribes a triangle within a semicircle. What is the measure of ∠XYZ?
Dmitry [639]

Answer:

The correct answer is option A.  90°

Step-by-step explanation:

<u>Points to remember</u>

Measure of angles on the semicircle is 90°

From the figure we can see a semicircle and a triangle inscribes  on it.

<u>To find the measure of <XYZ</u>

Here <XYZ is on the semicircle that is angle XYZ is a right angle.

Therefore m<XYZ = 90°

The correct answer is option A. 90°

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Convert 12 pints to quarts.
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The answer is 6 quarts.

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3 years ago
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