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3 years ago

Wich set of shapes contains members that are always similar to one another

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

4 0

Hello.

The answer is

equilateral triangles
All equilateral triangles are exactly the same as one another. They have the same size sides and the same shapes.

Have a nice day

iVinArrow [24]3 years ago

4 0

Answer: C) Equilateral Triangles

Any two triangles are similar if they have the same corresponding angles. In the case of two equilateral triangles, they both have 3 sets of 60 degree angles. So the angles pair up and we can prove them to be similar using the Angle Angle (AA) Similarity theorem.

This trick only works with triangles. It partially works with rectangles; however, we would need to be sure that the corresponding sides were proportional as well. There isn't a 100% guarantee that any two rectangles are similar.

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The length of a rectangle is 4 cm less than it’s width. If the area of the rectangle is 165 cm^2. What are the dimensions of the

Monica [59]

Answer:

The dimensions are 11 cm by 15 cm

Step-by-step explanation:

Area of a rectangle = (length)(width).

Let L represent the length and W the width.

Since L = W - 4, we have

Area of rectangle = (W - 4)W = 165 cm^2.

Thus, w^2 - 4W - 165 = 0. We can solve for W using the quadratic formula:

a = 1, b = -4 and c = -165. Thus,

-(-4) ± √ [ (-4)² - 4(1)(-165) ]

W = ---------------------------------------

4 ± √ [16 + 660 ]

W = ------------------------------

4 ± √ [ 676 ] 4 ± 26

W = ----------------------- = W = ------------- = W = 2 ± 13

2 2

Thus, W is 2 + 13 = 15. It cannot be negative, so we discard 2 - 13 = -11.

If the width, W, is 15, then the length is 4 less, or L = 11.

The dimensions are 11 cm by 15 cm

6 0

3 years ago

An online retailer is selling used books for $6.49, and you have $50 to spend. How many books can you buy if you must pay 6.5

elena55 [62]

× all of the number that it tell you to do

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3 years ago

A ball with mass m kg is thrown upward with initial velocity 28 m/s from the roof of a building 17 m high. Neglect air resistanc

Nutka1998 [239]

a. At its maximum height, the ball has zero vertical velocity, so

$-\left(28\dfrac{\rm m}{\rm s}\right)^2=2(-g)(y_{\rm max}-17\,\mathrm m)$

$\implies y_{\rm max}=57\,\mathrm m$

b. The ball's height in the air $y$ at time $t$ is given according to

$y=17\,\mathrm m+\left(28\dfrac{\rm m}{\rm s}\right)t-\dfrac g2t^2$

Solve for $t$ when $y=0$ :

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3 years ago

Help me pls and show me how u did it their is no graph so how would I do this algebraically

Ahat [919]

Subtract 4 from both sides

y−4>−2x
Divide both sides by -2

x>-y-4/2

Question 2 - y>x-4

Add 4 to both sides

y+4>x

Switch sides

x<y+4

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3 years ago

What is the prime factorization of 28

SVETLANKA909090 [29]

$28|2\\14|2\\.\ 7|7\\.\ 1|\\\\28=2\times2\times7=2^2\times7$

5 0

3 years ago

Read 2 more answers