blancasimon239
02.01.2022 •
Mathematics
Number 9 explain how u got the answer and the answer of cpurse
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Ответ:
90 degrees + 28 degrees= 118 degrees
180-118= Z is 62 degrees
13y-1 = 24 2x-7 = 39
+1 +1 +7 +7
13y = 25 2x = 46
/13 /13 /2 /2
y = 1.92 X = 23
Ответ:
x = 23 , y = 7 , z = 11
Step-by-step explanation:
Since the triangles are congruent then corresponding sides and angles are congruent , then
PS = CH , that is
2x - 7 = 39 ( add 7 to both sides )
2x = 46 ( divide both sides by 2 )
x = 23
∠ R = ∠ F = 90° , that is
13y - 1 = 90 ( add 1 to both sides )
13y = 91 ( divide both sides by 13 )
y = 7
Then
The sum of the 3 angles in Δ PRS = 180° , that is
∠ S + 90° + 28° = 180°
∠ S + 118° = 180° ( subtract 118° from both sides )
∠ S = 62°
Now ∠ H = ∠ S , that is
6z - 4 = 62 ( add 4 to both sides )
6z = 66 ( divide both sides by 6 )
z = 11
Ответ: