2 years ago

What shape is a four-sided polygon with 4 right angles and at least 2 equal sides?

Mathematics

1 answer:

alexgriva [62]2 years ago

8 0

Answer:

its either a rectangle or a square :)

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How much would $500 invested at 9% interest compounded annually be

dalvyx [7]

Answer:

$705.79.

Step-by-step explanation:

The formula is

Amount = P(1 + r/100) ^ t so

Amount = 500 (1 + 9/100)^4

= $705.79.

8 0

3 years ago

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Arrange the steps in the correct order to express cos3x in terms of cosx cos(2x)cos(x)-sin(2x)(x) [1-sin^2(x)]cos(x)-[2sin(x)cos

noname [10]

cos(3x) = cos(2x+x)

= cos(2x) cos (x) -sin(2x)sin(x)

$=(1-2sin^2(x)) cos(x)-(2 sin(x) cos(x)) sin(x)$

$= cos x -2sin^2(x) cos(x) -2sin^2(x) cos(x)$

$= cos(x) - 4 sin^2(x) cos(x)$

$cos(x)(1-4sin^2(x))$

$=cos(x(1-4(1-cos^2(x))$

$=cos(x)(1-4+4cos^2(x))$

$= cos(x)-4cos(x)+4cos^3(x)$

$=-3cos(x)+4cos^3(x)$

4 0

3 years ago

1. Michael DeBakey is an important Texan. What is his contribution and what did he do that was important? Did he invent anything

Jobisdone [24]

Answer:

n 1932 DeBakey devised the “roller pump,” an essential component of the heart-lung machine that permitted open-heart surgery. He also developed an efficient method of correcting aortic aneurysms by grafting frozen blood vessels to replace diseased vessels.

Works written: The New Living Heart

Born: September 7, 1908, Lake Charles

Died: July 11, 2008

Step-by-step explanation:

4 0

3 years ago

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In the diagram below, PA= <br>4, AB=2, and PC=3. Find<br>the length of PD.<br><br>

Diano4ka-milaya [45]

Answer:

PD = 8

Step-by-step explanation:

PC x PD = PA x PB

3 x PD = 4 x (4 + 2)

3PD = 24

PD = 8

3 0

3 years ago

Find the circumference of a circle with a radius of 2.5 cm

solmaris [256]

C=2*pi*r
2*3.141592654*2.5
Answer: 15.7 cm

8 0

3 years ago