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2 years ago

The question says find the circumference of the circle I’m the circle it’s written 12cm

Mathematics

1 answer:

lord [1]2 years ago

6 0

Answer:

37.69

Step-by-step explanation:

Since the diameter is 12, the Radius is 6

Circumference equation: 2pi(r)

So we plug it in

2pi(6)

That gives us 37.699

If you need to round, then it would be 37.7.

I really hope this helps!!!

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“If it is July then it is summer, and it is not July therefore it is not summer” Is this reasoning valid? Why or why not?

MAVERICK [17]

Answer:

Step-by-step explanation:

Summer starts in June and ends in August, so this is not valid.

Bam

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3 years ago

A master electrician earns $62 per hour. His apprentice earns $40 per hour. The master electrician works 3 hours more than the a

photoshop1234 [79]

X=hours master worked
y=hours apprentice worked

62x+40y=492

if master worked 3hours more than apprntice
x=3+y

sub 3+y for x

62(3+y)+40y=492
expand
186+62y+49y=492
186+102y=492
minus 186 both sides
102y=306
divide both sides by 102
y=3

sub back
x=3+y
x=3+3
x=6

master electrician worked 6 hours
6*62=372

master electrician earned $372

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3 years ago

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Where can the perpendicular bisectors of an acute triangle intersect?

lilavasa [31]

The answer is A. I only

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4 years ago

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Stefanie is painting her bedroom. She can paint 12 2/3 square feet in 2/5 of an hour. How many square feet can she paint in one

aalyn [17]

Answer:

$31\frac{2}{3}$

Step-by-step explanation:

since its only 2/5 of 1 hour, two 2/5 equal 4/5 so we divide the 12 2/3 by 2 to find the 1/5 which is 6 1/3

$12\frac{2}{3}$ ÷2= $6\frac{1}{3}$

$12\frac{2}{3} +12\frac{2}{3}=25\frac{1}{3}$

$12\frac{1}{3} +6\frac{1}{3}=31\frac{2}{3}$

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3 years ago

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How can you rewrite the expression (8-5i)^2 in the form of a +bi

olchik [2.2K]

$\bf \textit{recall that }i^2=-1\\\\
-------------------------------\\\\
(8-5i)^2\implies (8-5i)(8-5i)\implies 64-40i-40i+(5i)^2
\\\\\\
64-80i+(5^2i^2)\implies 64-80i+(25\cdot -1)\implies 64-80i+(-25)
\\\\\\
64-80i-25\implies 39-80i$

3 0

3 years ago