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Marina86 [1]
3 years ago
7

HELPP

Mathematics
1 answer:
Aliun [14]3 years ago
5 0

Answer:

1 and 4

2 and 3


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What is the exact circumference of the circle?
Delicious77 [7]

For this case, we have that by definition, the circumference of a circle is given by:

C = \pi * d

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d: Is the diameter of the circle given by 2r, that is, twice the radius.

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C = \pi * 8 \ cm

ANswer:

Option C

8 \pi \ cm

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Solve by substitution x-y=12 x+y=18
slamgirl [31]
X = y + 12. You then substitute or plug in that from the first equation into the second equation. You get (y+12)+y=18, then you simplify to get your y value. In this case y = 3. The you can plug your y value into either equation. (x+3=18) or (x-3=12) or (x=3+12) either way you get x=15 and y=3.
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3 years ago
Simplify (4x − 6) + (3x + 6). 7x 7x − 12 x 7x + 12
noname [10]

Answer:

<h2>7x</h2>

Step-by-step explanation:

\left(4x-6\right)+\left(3x+6\right)\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=4x-6+3x+6\\Group\:like\:terms\\=4x+3x-6+6\\\mathrm{Add\:similar\:elements:}\:4x+3x=7x\\=7x-6+6\\-6+6=0\\\\=7x

5 0
3 years ago
Help please!!!!!!!!!!!!​
Sedbober [7]

Step-by-step explanation:

\frac{8}{6}  =  \frac{x}{3}  \\ x =  \frac{3 \times 8}{6}  = 4

7 0
2 years ago
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