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Wewaii [24]
3 years ago
6

Segment addition postulate help

Mathematics
1 answer:
Lynna [10]3 years ago
6 0
ANSWER:
1. x=5
3. x=-12
5. x=4

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In a class, 60% of the students are girls. There are 18 girls in the class. How many boys are in the class? How many students ar
seraphim [82]
Percentage of students that are girls in the class = 60%
Number of girls in the class = 18
Let us assume the total number of students in the class = x
Then
60% * x = 18
(60/100) * x = 18
6x/10 = 18
6x = 18 * 10
6x = 180
x = 180/6
   = 30
So the total number of students in the class is 30.
Number of boys in the class = 30 - 18
                                               = 12
So there are 12 boys in the class. I hope the procedure is simple enough for you to understand.
8 0
3 years ago
Read 2 more answers
7y + 2x − 10y + 3x2 − 10x
Anni [7]

Answer:

3x^2-8x-3y

Step-by-step explanation:

combine like turms and rearrange

5 0
2 years ago
In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60° angle and the 70° angl
Dmitry_Shevchenko [17]

<u>Answer:</u>

  • The value of x is 50°.

<u>Step-by-step explanation:</u>

<u>We know that:</u>

  • x = y
  • 2(70 + 60) + x + y = 360

<u>Work:</u>

  • 2(130) + x + x = 360
  • => 260 + 2x = 360
  • => 2x = 360 - 260
  • => 2x = 100
  • => x = 50

Hence, <u>the value of x is 50°.</u>

Hoped this helped.

BrainiacUser1357

7 0
2 years ago
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Orlov [11]
14 meters? Bc 24-10 = 14
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3 years ago
Which expresion represents the perimeter of the rectangle above (3y-5), 2y
Sonbull [250]
(3y-5 + 2y)*2 = (5y-5)*2 = 10y-10
3 0
3 years ago
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