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4 years ago

Find a · b. |a| = 60, |b| = 30, the angle between a and b is 3π/4.

1 answer:

8 0

The dot product is used to determine the magnitude of the resultant vector of two component vectors. It is expressed as a·b. It does not literally mean that you multiply their values. Instead, you multiply their matrices. However, since we cannot find matrices, let's just find the resultant vector through theorems involving triangles. By cosine law:

R = √[a² + b² - 2abcos(3π/4)]
R = √[60² + 30² - 2*60*30*cos(3π/4)]
R = 83.94

Thus, a·b = 83.94

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Given h(x) = 5 - 9x, find h(8). ANSWER!!!

slamgirl [31]

Answer:

Step-by-step explanation:

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3 years ago

Question Number 22 You work for a company that manufactures large tarps used for groundcover. An order was placed for a rectangu

Colt1911 [192]

Answer: the area of the finished tarp is 131872 square inches

Step-by-step explanation:

Search strip of tarp is rectangular. The formula for determining the area of a rectangle is expressed as

Area = length × width

An order was placed for a rectangular tarp that will be made up of 8 strips of fabric. Each strip is 26 inches wide and 634 feet long. The area of each strip of tarp is

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3 years ago

Which expression has the same value as 4x – 3y?

coldgirl [10]

Answer:

4x+(-3y)

Step-by-step explanation:

$\\ \rm\longmapsto 4x+(-3y)$

(-)(-)=(+)
(+)(-)=(-)
(-)(+)=(-)
(+)(+)=(+)

$\\ \rm\longmapsto 4x-3y$

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3 years ago

See file attached below:

pochemuha

Answer:

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Step-by-step explanation:

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3 years ago

What is the ratio of x to y 14x = 9y A) 14/9 B) 1/9 C) 1/14 D) 9/14

kirza4 [7]

Answer:

A) 14/9

Step-by-step explanation:

14 and 9 have no GCFs (Greatest Common Factors), so the ratio is simply 14/9.

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4 years ago