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3 years ago

I need help with this question ASAP!!!!!!!!!!!!

Mathematics

2 answers:

Minchanka [31]3 years ago

8 0

Answer:90 degrees

Step-by-step explanation:

the shape has stayed the same, it just got smaller so the angle doesn’t change

TiliK225 [7]3 years ago

5 0

It 90 degrees because even though the side lengths change the angle measure doesn’t

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Find the area of the largest circle that can be inscribed inside a square whose diagonal is 5" ( with explanation )

sweet-ann [11.9K]

Answer:

19.625

Step-by-step explanation:

If the square's diagonal is 5 and the circle is inscribed in it, that means that the radius is 2.5

2.5^2*3.14

=19.625

6 0

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

#SPJ1

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2 years ago

Trigonometry

artcher [175]

The area of the triangle XYZ is 29.1 square units

Explanation:

Given that the measurements of the sides of the triangle XYZ are $XY = 13$ , $XZ=8$ and $m\angle X=34^{\circ}$

We need to determine the area of the triangle XYZ

<u>Area of the triangle:</u>

The area of the triangle can be determined using the formula,

$Area=\frac{1}{2} yz \ sin X$

Substituting the values, we get,

$Area=\frac{1}{2}(13)(8) \ sin 34$

Simplifying, we get,

$Area=\frac{1}{2}(104) (0.56)$

Multiplying the terms, we get,

$Area=\frac{58.24}{2}$

Dividing the terms, we have,

$Area=29.12$

Rounding off to the nearest tenth, we get,

$\text {Area}=29.1$

Thus, the area of the triangle XYZ is 29.1 square units.

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4 years ago

Find the area and perimeter of a triangle with base 10cm and height of 8.5 cm

STALIN [3.7K]

Answer

Area is 85

Step-by-step explanation:Mutiply 10 and 8.5

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4 years ago

you and your best friend are both on the swim team you want to be your friend at the next winter so you decide to swim in 15 min

Virty [35]

Answer:

40min

Step-by-step explanation:

8 0

3 years ago