Answer:
21, 9
Step-by-step explanation:
If girls are x, then boys are x + 12
x + x + 12 = 30
2x + 12 = 30
2x = 18
x = 9
There are 9 girls and 21 boys
Answer:
these shapes are congruent, because they have the same shape and the angles are the same
Step-by-step explanation:
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Answer:
The angles are 45°, 60° , 75°
Step-by-step explanation:
<h3>
Angle sum property:</h3>
Sum of all the angles of a triangle is 180°.
Equation:
3x + 5x + 4x = 180
Combine like terms,
12x = 180
x = 180/12

3x = 3 *15 = 45°
5x = 5* 15 = 75°
4x = 4 *15 = 60°
3/5 + 5/7 = 1 11/35 - 1/5 = 1 4/35 which is your final answer.
Answer:4.6h-2.9d-16
Step-by-step explanation: