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vesna_86 [32]
3 years ago
7

Adding and subtracting real numbers - find each difference - 1.7 - (-3.8)

Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

2.1

Step-by-step explanation:

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The area of a regular octagon is 25 cm2. What is the area of a regular octagon with sides four times as large?
Scorpion4ik [409]
Regular polygon area = n*side^2 / (4 * tan (180/n))
where "n" is number of sides
The formula is dependent on the side^2 term,
So, if we have an octagon that has sides 4 times as large, that means the area will be sixteen times larger.
side^2 = 4^2 = 16
So we multiply 25 cm^2 by 16 and we get
400 square centimeters.

Source:
http://www.1728.org/polygon.htm


5 0
3 years ago
Determine if the sequence below is arithmetic or geometric and determine the
mote1985 [20]
3, 12, 48 ... =
3(4)^0, 3(4)^1, 3(4)^2 ... =
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3 0
2 years ago
I’ll give brainliest!!
Alina [70]

Answer:

I think the answer would be 45.3

Step-by-step explanation:

Good luck ^^

4 0
3 years ago
4. Find x<br> AB<br> (10x-51)<br> DC<br> (6x-11)
Volgvan

Answer:

51/10 and 11/6

Step-by-step explanation:

10x - 51 = 0

10x = 51

x = 51/10

6x - 11 = 0

6x = 11

x = 11/6

3 0
2 years ago
During a catered lunch, an average of 4 cups of tea are poured per minute. The lunch will last 2 hours. How many gallons of tea
Greeley [361]

Answer:

Step-by-step explanation:

4 cups of tea per minute.......lunch lasts 2 hrs.....there are 120 minutes in 2 hrs...so in 2 hrs, there will be (4 * 120) = 480 cups

and if there is 16 cups in 1 gallon, the caterer needs to bring :

480 / 16 = 30 gallons <==

6 0
3 years ago
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