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luda_lava [24]
3 years ago
7

MATH HELP PLEASE !50 POINTS!

Mathematics
2 answers:
docker41 [41]3 years ago
7 0

Answer: 108

Step-by-step explanation: You take the x and the 2/3x and combine them to get 1 2/3x, so 1 2/3x=180. 180 divided by 5 is 36, and 36 times three is 108

Sophie [7]3 years ago
7 0

Answer:

108

Step-by-step explanation:

Angles on a line add up to 180 degrees.

x + 2/3x = 180

5/3x = 180

x = 180 × 3/5

x = 108

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2 years ago
Read 2 more answers
Mrs. Smith's class is working on a variety of science experiments. Each
SVETLANKA909090 [29]

Answer:

66

Step-by-step explanation:

If there are  <em>n</em>  students, then the number of pairs is \frac{n(n-1)}{2}.

With 12 students, \frac{12(12-1)}{2} = \frac{132}{2}=66 pairs can be formed.

The reason the formula works is this:  Each of the 12 students can be paired with 11 other students (no student is paired with him/her self).  But counting 12 x 11 = 132  counts each pair <u>twice</u>.  Example: student A can be paired with student B,..., student B can be paired with student A.  The pair was counted two times.

See the attached image that shows pairings of 5 students.  There are

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8 0
2 years ago
A student started out poorly on his first mathematics test. However, he doubled his score on each of the next two tests. The thi
dsp73
His score is 50

How to:
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Second test grade:50
Third test grade: 100
Add all three and divide by 3
6 0
2 years ago
Describe 58 as a sum of tens and ones
Solnce55 [7]
58 is 5 tens (5*10) and 8 ones (8*1)
4 0
3 years ago
3x+ (-5y)= 12 what are the values of a,b,&amp; c?
IRISSAK [1]

Answer:

a=3

b=(-5)

c=12

........................

6 0
3 years ago
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