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balu736 [363]
3 years ago
7

Find the area of a regular octagon with apothem of 8.45 cm and a side length of 7 cm

Mathematics
1 answer:
levacccp [35]3 years ago
4 0
<h2>236.59cm²</h2>

Step-by-step explanation:

<h3>Area of octagon = 2(1+√2)a²</h3><h3> = 2(1+√2)7²</h3><h3> = 236.59cm²</h3>

<h2>MARK ME AS BRAINLIST</h2>
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What is the sum of ? <br><br>I will put a pic if the answer is correct ill mark brainlist
olga2289 [7]

\text{The sum of } 1\frac{7}{10}  \text{ and } 3\frac{3}{5} \text{ is } 5\frac{3}{10}

<em><u>Solution:</u></em>

Given that we have to find the sum of 1\frac{7}{10} \text{ and } 3\frac{3}{5}

<em><u>Let us first convert the mixed fractions to improper fractions</u></em>

Multiply the whole number part by the fraction's denominator.

Add that to the numerator.

Then write the result on top of the denominator

Therefore,

1\frac{7}{10} = \frac{10 \times 1 + 7}{10} = \frac{10+7}{10} = \frac{17}{10}\\\\3\frac{3}{5} = \frac{5 \times 3 + 3}{5} = \frac{18}{5}

Now we can add both the fractions

1\frac{7}{10} + 3\frac{3}{5} = \frac{17}{10} + \frac{18}{5}

Make the denominators same

1\frac{7}{10} + 3\frac{3}{5} = \frac{17}{10} + \frac{18 \times 2}{5 \times 2}\\\\1\frac{7}{10} + 3\frac{3}{5} = \frac{17}{10} + \frac{36}{10}\\\\\text{Add the fractions since the denominator is same }\\\\1\frac{7}{10} + 3\frac{3}{5} = \frac{17+36}{10} = \frac{53}{10}

Now convert the fraction to mixed number

When we divide 53 by 10 , the remainder is 3

Therefore, write 5 as a whole number and and 3 as numerator and 10 as denominator

\frac{53}{10} = 5\frac{3}{10}

Thus the sum of given mixed fraction is 5\frac{3}{10}

6 0
3 years ago
A car rental agency charges a base fee of $50 plus an additional charge of $0.40 for every mile driven. The total charge, c, is
mylen [45]

Answer:

320 miles

Step-by-step explanation:

c=178

subtract the base fee of 50 from c- you get 128

Divide 128 by the 0.40 rate to get m by itself

m then equals 320

7 0
3 years ago
Which relationship describes angles 1 and 2?
11Alexandr11 [23.1K]

the relationship between the two angles is that they are supplementary angles because together they create a line that is 180 degrees. I might be wrong so please don't get mad if I am. I am 90 percent sure this is the answer though

7 0
3 years ago
Lynette wanted to run one mile in eight minutes. To be on pace to reach
natta225 [31]

Answer:

0.25 miles

Step-by-step explanation:

assuming that she keeps a constant Velocity/ speed,

find the speed she intends to run with, ie total distance/time

\frac{1}{8} miles \: per \: minute

find the distance she travels in two minutes, ie speed multiplied by time.

\frac{1}{8}  \times 2 =  \frac{1}{4 }  = 0.25

4 0
3 years ago
Please help really confused
marysya [2.9K]
X intercept: (- 1/7, 0)
Y intercept: (0, 1/4)
3 0
3 years ago
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