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2 years ago

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL NAME BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Fudgin [204]2 years ago

8 0

55% is the correct answer

faltersainse [42]2 years ago

5 0

Hope this helps

Answer :

Percentage increase = (279 - 180)/180 x 100% = 55%

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jeyben [28]

Sorry but I don’t understand your language.

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3 years ago

Ill mark brainliest I just don't understand

Misha Larkins [42]

Answer:

a triangle always equals 180 degrees so

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Step-by-step explanation:

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3 years ago

Which best defines the relashionship between speed and velocity 1.speed is velocity with displacement 2.velocity is speed with d

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Answer:

3. Speed is based on a specific direction

Step-by-step explanation:

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3 years ago

A 4-lb. force acting in the direction of (vector) 4,-2 moves an object just over 7ft from point (0,4) to (5,-1). Find the work d

Tcecarenko [31]

To solve this problem, we have to find the net displacement and the net force and the multiply the dot product together and get the work done.

The work done on moving the object is 27ft*lbs

<h3>Work done in moving the object from point A to point B</h3>

To find the work done on this object, let's find the net force on the object.

Data;

force = 4lb
direction = 4, -2
displacement = 7ft
direction = (0, 4) to (5,1)

The unit vector of the force is

$\sqrt{4^2 +(-2)^2} =\sqrt{16 + 4} = \sqrt{20}$

$\frac{4}{\sqrt{20} }, \frac{-2}{\sqrt{20} }$

The net force acting on the object is

$F = 4(\frac{4}{\sqrt{20} }, \frac{-2}{\sqrt{20} })\\F= (\frac{16}{\sqrt{20} }, \frac{-8}{\sqrt{20} } )$

The displacement on the object is 7ft through (0,4) to (5, -1)

The unit vector on displacement is

$\sqrt{5^2 + (-1-4)^2} = \sqrt{25+25} = \sqrt{50}$

$\frac{5}{\sqrt{50} }, \frac{-5}{\sqrt{50} }$

The net displacement will be

$7(\frac{5}{\sqrt{50} }, \frac{-5}{\sqrt{50} }) = \frac{35}{\sqrt{50} }, \frac{-35}{50}$

The work done will be F.d

$w = f. d \\$

$w = (\frac{16}{\sqrt{20} }, \frac{-8}{\sqrt{20} } ) * \frac{35}{\sqrt{50} }, \frac{-35}{50}\\w = 17.71+ 8.854\\w = 26.567 = 27ft*lbs$

The work done on moving the object is 27ft*lbs

Learn more on work done on an object here;

brainly.com/question/26152883

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6 0

2 years ago

Pls fastttttttttttttttt

Lera25 [3.4K]

a= -1, b= 2 & c= -3

abc= -1 x 2 x -3

= 6

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2 years ago