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gulaghasi [49]
3 years ago
14

How many lines of symmetry does a object shaped like a stop sign have

Mathematics
1 answer:
3241004551 [841]3 years ago
7 0
There are 8! Eight sides on the shape, and all sides are the same shape. 
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Pleaseee HELPP MEE WITHH THIS QUESTION!
Zina [86]

Answer:

1120°

Step-by-step explanation:

Use the sum of interior angles formula:

180(n-2)

Where n is the number of sides.

In a nonagon, there are 9 sides, substitute 9 for n:

180(9-2)\\180(7)\\1260

Since our nonagon is a regular nonagon, all 9 angles measure the same, so each angle measures:

\frac{1260}{9} =140

Subtract 140 from 1260:

1260-140=1120

7 0
2 years ago
Roll a die 10 sided die 3 times. What is the probability that the sequence is strictly increasing or decreasing?
snow_lady [41]

Answer:

The probability of obtaining a sequence which is neither strictly increasing nor decreasing in 0.76.

Step-by-step explanation:

We have 10 possible outcomes on a single throw.

So, outcomes in 3 throws = 10^{3} =1000 outcomes.

Let x be the number of strictly increasing arrangements.

Let y be the number of strictly decreasing arrangements.

Let z be the number of outcomes that are neither strictly decreasing nor strictly increasing

So, we have x+y+z=1000

If we look at a strictly increasing arrangement from the other/opposite side, it will look like a strictly decreasing arrangement.

So, x = y

Hence, we can say the final equation will be :

2x+z=1000

And for strictly increasing arrangements ,all 3 numbers will be different and it can be done in 10C3 ways.

10C3=\frac{10!}{3!7!} = 120 ways

So, 2x=2\times120=240

Thus z=1000-240=760

So, the probability is = \frac{760}{1000} = 0.76

Therefore, the probability of obtaining a sequence which is neither strictly increasing nor decreasing in 0.76.

4 0
2 years ago
your bank balance is $515.50 if you write a check to buy a watch your balance would be $496.11 how much does does the watch cost
inn [45]

Answer:

Step-by-step explanation:

$515.50

-496.11

_______

$19.39

Equation: 515.50-x=496.11

3 0
2 years ago
Find the value of y if the line through the points (-3, y) and (4, 6) has a slope of -2.
Sever21 [200]

Answer:

-20

Step-by-step explanation:

(y - 6) / (-3-4) = -2

(y-6)/7=-2

y-6=-2*7

y=-14-6 =-20

3 0
2 years ago
Please help tysm!!!!!!!!!!
Sindrei [870]

Answer:

QUESTION 4 is 0.05

Step-by-step explanation:

you divide 1 dollar by the 20 apples.

4 0
2 years ago
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