3 years ago

What is (-9)(-4)(-4)(8)

Mathematics

2 answers:

grandymaker [24]3 years ago

5 0

Answer:

-1152

Step-by-step explanation:

First: (-9)(-4)=36

Then: 36(-4)=-144

Lastly: -144(8)= -1152

Because It's multiplication we can separate the problem and break it down. By doing this is makes it a lot easier to understand and see the problem step-by-step.

MatroZZZ [7]3 years ago

4 0

Answer:

-1,152

Step-by-step explanation:

(-9)(-4)(-4)(8)

= -1152

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4 years ago

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GREYUIT [131]

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3 years ago

An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$