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crimeas [40]
3 years ago
14

11. What's the perimeter of a regular heptagon if one side measures 3 inches?

Mathematics
1 answer:
NemiM [27]3 years ago
7 0
When a polygon is regular, that means that all of its sides are the same length and all of its angles are the same. A heptagon has seven sides and you know that all of them measure 3 inches. You can find the perimeter by adding all of the side measures together, so 3 + 3 + 3 + 3 + 3 + 3 + 3, or 3 x 7. So, the perimeter of the heptagon is 21 inches.
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A bag contains 40 red and green marbles. The number of green marbles, g, is 9 times the number of red marbles, r.
Basile [38]

Answer:

4 red marbles

Step-by-step explanation:

green marbles = 9r

red marbles = r

9r + r = 40

10r = 40

r = 4 = red marbles

7 0
2 years ago
A watch lost 1 minute 18 seconds in 39 days. How many seconds did it lose per day?
vlabodo [156]
ATO,
We should convert 1.18 minutes into seconds
1 minute = 60 seconds
60 + 18 seconds = 78 seconds
We should divide with the days
So,
78 seconds ÷ 39 days = 2 seconds per day.

So,it lose 2 seconds per day.

Please mark mine answer as Brainliest
Please click THANKS button
6 0
3 years ago
Which statement is true about this question -4(2p+5)+8p=-11
aleksandrvk [35]
The answer to this problem is “C “
6 0
3 years ago
2. Xamdi is having a birthday party. The event location says the total cost includes a fixed rental fee of $80 and $10 per guest
Stells [14]
80+10x is the expression. To find the cost for 9 guests, simply plug in 9 for x. This becomes an equation reading 80+10(9)=170. The total cost for 9 guests is $170.00.


4 0
3 years ago
MAKE SURE YOU ARE RIGHT ANSWER PLEASE I WILL PUT THE BRAINIEST ANSWER
Pavlova-9 [17]

Step-by-step explanation:

Formula:- 4/3*Pi*r^3

= 4/3*22/7*(1/2)^3

Please mark me as brainliest

8 0
3 years ago
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