MATHEMATICS HIGH SCHOOL

A musical instrument depreciates by 20% of itsvalue each year. What is the value, after 2
years, of a piano purchased new for $1200?

Answers

Answer 1
Answer:

Answer:

$768 is the value of the piano after 2 years.

Step-by-step explanation:

First you need to find 20% of 1,200. To do so you would need to set up a proportion.

(20)/(100) = (x)/(1200)  20 x 1,200 = 24,000/100 = 240

Now, subtract that amount from the original 1,200 to get the amount after one year.

1,200 - 240 = 960.

Next, you need to find 20% of 960 again setting up a proportion.

(20)/(100) = (x)/(960) 20 x 960 = 19,200/100 = 192

Finally, subtracting this amount from it's new value.

960 - 192 = 768
Answer 2
Answer: The answer is:
768
As:
1200/5=20%=240
1200-240=960 (after 1 year)
960/5=20%=192
960-192=768 (after 2 years)

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If x - 11 = 20, then x = ?

Answers

Answer:

31

Step-by-step explanation:

x-11=20

X=20+11

therefore X =31

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find the volume of a can of chicken broth that had a diameter of 7.5cm and a height of 11cm. round 5o the neatest tenth

Answers

cans are normally cylinders
Vcylinder=hpir^2

h=11

d/2=r
7.5/2=3.75=r

V=11pi3.75^2
V=11pi14.0625
V=154.6875pi
aprox pi=3.141592 and multiply
V=485.96
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The graph of a linear equation contains the points (3,11) and (-2,1). Which point also lies on the graph

Answers

the slope is 2/1 so a point that lies on it is (4,13)
(3+1,11+2)
Hope this Helped!

Express 0.00419 in standard form

Answers

the standard form is 4.19•10^-3

9. What is the difference between an isometric transformation and one that is not isometric? Provide examples to illustrate at least two isometric transformations and at least one transformation that are not isometric.

Answers

An isometric transformation is a transformation of the objects position, without changing the object itself. There are three types of isometric transformation; translation, reflection, and rotation. Nonisometric transformations change and alter the dimension or shape of an object, like enlargement.

A triangle T is bounded (on three sides) by the lines x = 6, y = 0, and y = 3 2 x. A rectangle of width w is inscribed inside T. Find the area of this rectangle.

Answers

Answer:

33.85 units^2

Step-by-step explanation:

you must first draw the triangle on the plane using the equations (see

attached file), you will have a right angle triangle with a height of 192 and a base of 6.

then you calculate the angle with the tangent function = 88.21

Then you use the small triangle to find the value of a (see attached file).

Finally, you propose an equation for X to find one of the sides of the triangle, once you have x squared it, and you already have the area,

i attached procedure
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