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laiz [17]
3 years ago
15

An architect is making a plan for a new circular playground. If the playground needs to be surrounded by a fence and the diamete

r of the playground is 25 meters, how much fencing needs to go up?
Mathematics
1 answer:
BaLLatris [955]3 years ago
7 0

Answer:

78.54 m

Step-by-step explanation:

To obtain how much circular fence, we obtain the Circumference of the circular playground.

The Circumference of a circle, C = 2*pi*r

pi = 3.14 ; r = diameter / 2 = 25 /2 = 12.5 m

C = 2 * 3.14 * 12.5

C = 78.539816

Hence, the fencing which need to go up is ;

78.54 m

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(4x + 5)^2

The answer is: (4x + 5)^2.
6 0
3 years ago
Which of the following are true statements?
Alla [95]

Answer: Options a,b  are correct

Explanation:

We can check the true statements with thye help of logarithmic rules

1. product rule log(xy) = logx+logy

2.quotient rule log\frac{x}{y}=logx-logy

3. Exponent rule logx^m=m*logx

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Option b is satisfying exponent rule

Option c is discarded because   (logM)^p=log^pM not equal to p*LogM

Option D is discarded because logM-logN =logM-logN=log(\frac{M}{N})  is not equal to log(M-N)

Hence, Option a and b are correct.

8 0
3 years ago
Read 2 more answers
Sam initially invested $4,500 into a savings account that offers an interest rate of 3% each year. He wants to determine the num
choli [55]

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\bf 7020\geqslant 4500(1+0.03t)\implies \cfrac{7020}{4500}\geqslant 1+0.03t\implies \cfrac{39}{25}\geqslant 1+0.03t \\\\\\ \cfrac{39}{25}-1\geqslant 0.03t\implies \cfrac{14}{25}\geqslant 0.03t\implies \cfrac{~~\frac{14}{25}~~}{0.03}\geqslant t\implies \cfrac{56}{3}\geqslant t \\\\\\ 18\frac{2}{3}\geqslant t\impliedby \textit{18 years and 8 months}~\hfill \boxed{0 \leqslant t \leqslant 18\frac{2}{3}} \\\\\\ ~\hspace{34em}


check the picture below.


bearing in mind that "t" cannot be less than 0.

8 0
3 years ago
Link<br> OPEN ENDED QUESTION<br> What does percent mean?<br> MH
kherson [118]

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<em>Percent means out of 100.</em>

*Hence the word... per-<u>cent</u> meaning per-100

6 0
4 years ago
$86,800,000 in scientific notation
jek_recluse [69]

Answer:

8.68·10^7

Step-by-step explanation:

Scientific notation is a number with no zeros between 1-10 that is multiplied by a number of 10's so here we just take away 868 and add a decimal point to make it between 1-10 8.63

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3 years ago
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