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VLD [36.1K]
2 years ago
12

How many sides are there?

Mathematics
1 answer:
lions [1.4K]2 years ago
4 0

Answer:

13

Step-by-step explanation:

1980 = ( n - 2 ) * 180

n - 2 = 11

n = 13

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Which situation represents a
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C, 200 miles in 4 hours

Step-by-step explanation:

You divide 200 by 4, then you get 50. 50 miles in 1 hour!

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Convert 12.4 hours to hours and minutes.​
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Answer:

12.4=12 hours and 24 minutes

Step-by-step explanation:

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Need some help with this question!
Veronika [31]
1. solve for x in first to just find nterms of y

x=12-y
sub that for x in other one
first divide that one by 2 to make it easier
2x-y=18
2(12-y)-y=18
24-2y-y=18
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minus 24 both sides
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2.
find intersection of x+y=5 and -2x+3y=6
or easiers, just test the intersections
wait, they all intersect in the same place
this is super easy
pick ANY point that is in that reigon and see if it is true

A, if we pick lets say (5,5)
that is false for x+y<5
not A

B
pick (10,0)
false for first one
not B

C
pick (0,0)
true for first
false for 2nd
not C


D. pick (-10,0)
true for first
true for 2nd


answer is D


answer is D for both questions
6 0
3 years ago
Please help me set up this problem, I’ll mark you brainiest if it’s correct <br> X/? = ?/?
drek231 [11]

Answer:

6.3 inches

Step-by-step explanation:

5/9 = 3.5/x

5x = 31.5

x = 6.3

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How many 5/16's are in 1 &amp; 7/8?
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