1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leto [7]
3 years ago
12

Find the area of a regular octagon with

Mathematics
1 answer:
sattari [20]3 years ago
4 0

Answer:

482.8 cm

Step-by-step explanation:

A=2(1+sqrt2)a^2=2·(1+squrt2)·10^2=482.84271

You might be interested in
2. Saul invested an average of $425 per month since age 30 in various securities for his
BabaBlast [244]

Answer:

$507.30

Step-by-step explanation:

-Given the monthly deposits are $425 and the interest rate is 3.5% for 30 years.

-The amount of the investment after 30 years is calculated as;

A=P(1+i/n)^n, n=time \ in \ months\\\\=425(1+0.035/12)^{30\times 12}\\\\=1212.65

-Assuming Saul started saving at age 20, his investment term will be 40 yrs.

-His investment amount is thus:

A=P(1+i/n)^n, n=time \ in \ months\\\\=425(1+0.035/12)^{40\times 12}\\\\=1719.95

#We subtract to find how much more he would have if he started saving at 20;

=A_{20}-A_{30}\\\\=1719.95-1212.65\\\\=507.30

Hence, Saul would have $507.30 more had he started saving 10 years earlier.

5 0
3 years ago
the outdoor temperature was 8 degrees at midnight the. temperature declined 5 degrees during each. of the next 3 hours what was
LenKa [72]
-7 degrees would be the answer
6 0
3 years ago
Which ratios of side lengths are equal to tan (a) ?
Eddi Din [679]

Answer:

tan(\alpha)=\frac{opposite}{adjacent}

Step-by-step explanation:

tan(\alpha)=\frac{opposite}{adjacent}

4 0
2 years ago
Read 2 more answers
Two in 1 more points​
cluponka [151]

Answer:

Your photo wont show up

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
How do u rewrite 0.72 repeating as a simplified fraction?
vampirchik [111]
8/11 is the answer

I use this trick: When tryig to find repeating numbers divide by 11 or 9

When dividing by 9 the numerator will be the first number in the decimal

When dividing by 11 the numerator will be one more than the first number in the decimal
8 0
3 years ago
Other questions:
  • What is the probability of rolling a odd number a number cube and spinning blue on the spinner shown
    12·1 answer
  • A certain radioactive isotope has leaked into a small stream. Three hundred days after the​ leak, 3% of the original amount of t
    10·1 answer
  • What is the y-intercept if the line?<br> A. 0<br> B. -2<br> C. 1<br> D. 1/2
    7·2 answers
  • Please someone actually help with this I don't understand how.​
    14·1 answer
  • What is the area of a circle with a radius of 6 inches?
    10·1 answer
  • Jordell made 45% of his shots he took during the basketball game. If he attempted 40 shots, how many times did he score?
    11·1 answer
  • A Stegosaurus eats six and two fifths big leaves for breakfast and three and one fifth big leaves for lunch. How many leaves did
    12·2 answers
  • Select all that are equivalent to the expression x^-1/3
    11·1 answer
  • The equation of the line that is parallel<br> to 4x+2 and passing through (5,15)
    14·1 answer
  • If there are approximately 1.8 million cars in Vancouver and if each car travels an average of 17,500 kilometres in a year, how
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!