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MAXImum [283]
3 years ago
7

How to solve this problem

Mathematics
1 answer:
rodikova [14]3 years ago
3 0
\bf \textit{circumference of a circle}\\\\
C=2\pi r\quad 
\begin{cases}
r=radius\\
-----\\
r=10
\end{cases}\implies C=2\pi 10\implies \boxed{C=20\pi }\\\\
-------------------------------\\\\

\bf \textit{let's converte 1km to inches}
\\\\\\
km\cdot \cfrac{1000m}{km}\cdot \cfrac{100cm}{m}\cdot \cfrac{in}{2.54cm}\implies \cfrac{1000\cdot 100\cdot in}{2.54}\approx 39370.079\ in\\\\
-------------------------------\\\\
\textit{how many times does }20\pi \textit{ go into }39370.079?\implies \boxed{\cfrac{39370.079}{20\pi }}
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Wewaii [24]
13 hours
200 divided by 15 = 13.33333333333333
So since this a long number I have to round.
Answer: 13 hours
5 0
4 years ago
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What is the solution 2/3 a +6 > 0
RoseWind [281]

Answer:

a > -9

subtract 6 from both sides to get 2/3 a > -6. Then multiply both sides by 3 to get 2a > -18. Last, divide both sides by 2 to get your answer: a > -9

3 0
2 years ago
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The sum of four,and the ptoduct of five and a number is twenty
lora16 [44]
5n + 4 = 20
5n = 16
n = 16/5  = 3 1/5
6 0
3 years ago
An angle measures 42.6° less than the measure of its complementary angle. What is the measure of each angle?
Setler79 [48]

Answer:

Complementary angle 1st = 66.3°

Complementary angle 2nd = 23.7°

Step-by-step explanation:

Assume;

Complementary angle 1st = a

Complementary angle 2nd = a - 42.6°

Sum of complementary angles = 90°

So,

a + a - 42.6 = 90

a = 66.3

Complementary angle 1st = 66.3°

Complementary angle 2nd = 23.7°

3 0
3 years ago
Find the 15th term of the geometric sequence 2, 6, 18,...
kenny6666 [7]

Answer:

<h3>           a₁₅ = 9 565 938</h3>

Step-by-step explanation:

6÷2 = 3  and   18÷6 = 3  so:  q = 3

a_n=a_1\cdot q^{n-1}\\\\a_1=2\\q=3\\n=15\\\\a_{15}=2\cdot3^{15-1}\\\\a_{15}=2\cdot3^{14}\\\\a_{15}=9\,565\,938

7 0
3 years ago
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