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kykrilka [37]
3 years ago
5

What are products on number 23b.

Mathematics
1 answer:
Kay [80]3 years ago
8 0
23 that's it JK But really JK don't put 23 or sometjing
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The area of a compact disc is 452 4/7 square centimeters. What is the diameter of a compact disc ? Use 22/7 as an approximation
motikmotik

\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\ \cline{1-1} A=452\frac{4}{7} \end{cases}\implies 452\frac{4}{7}=\pi r^2\implies \cfrac{3168}{7}=\pi r^2 \implies \cfrac{3168}{7\pi }=r^2 \\\\\\ \stackrel{\pi =\frac{22}{7}}{\cfrac{3168}{7\cdot \frac{22}{7}}}=r^2\implies \cfrac{3168}{22}=r^2\implies 144=r^2\implies \sqrt{144}=r\implies 12=r \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{diameter=2r}{d=24}~\hfill

6 0
3 years ago
Gonna.........................
AlladinOne [14]

Answer:

B. -8

Step-by-step explanation:

x-3y=136

18x+3y=-288

add the equations

19x=-152

divide by 19

x=-8

3 0
3 years ago
Evaluate the expression for the given value of the variable: <br> PLEASE HELP
Shalnov [3]

Answer:

The question is wether for the first positive value we consider (-4)×(-2) or -4×(-2)

5 0
4 years ago
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Find the greatest common factor of the following 26n^5 12n^3
OverLord2011 [107]
I teach you students to factor each term

26n^5 = 2 x 13 x n x n x n x n x n
12n^3. = 2 x 3 x n x n x n
7 0
4 years ago
Hello<br> perimeter of a semi- circle with a radius of 6cm.
Fed [463]

Step-by-step explanation:

perimeter of a semi- circle with a radius of 6cm

=2πr=2×π×6=12π cm

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3 years ago
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