Reed Donnelly
03/24/2024 · Elementary School
In \( \triangle Q R S \), if \( \overline{Q R} \cong \overline{R S}, m \angle Q=(8 x-17)^{\circ}, m \angle R=(19 x+4)^{\circ} \). and \( m \angle S=(5 x+1)^{\circ} \). find the value
of \( x \) and the measure of each angle.
\( M
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
In triangle \( \triangle QRS \), we know that \( \overline{QR} \cong \overline{RS} \), which means that triangle \( QRS \) is isosceles with \( \angle Q \) and \( \angle S \) being the base angles. Therefore, we have:
\[
m \angle Q = m \angle S
\]
Given the measures of the angles:
\[
m \angle Q = (8x - 17)^\circ
\]
\[
m \angle S = (5x + 1)^\circ
\]
Setting these two expressions equal to each other, we get:
\[
8x - 17 = 5x + 1
\]
Now, we can solve for \( x \):
1. Subtract \( 5x \) from both sides:
\[
8x - 5x - 17 = 1
\]
\[
3x - 17 = 1
\]
2. Add 17 to both sides:
\[
3x = 18
\]
3. Divide by 3:
\[
x = 6
\]
Now that we have \( x \), we can find the measures of the angles:
1. Calculate \( m \angle Q \):
\[
m \angle Q = 8x - 17 = 8(6) - 17 = 48 - 17 = 31^\circ
\]
2. Calculate \( m \angle S \):
\[
m \angle S = 5x + 1 = 5(6) + 1 = 30 + 1 = 31^\circ
\]
3. Calculate \( m \angle R \):
\[
m \angle R = 19x + 4 = 19(6) + 4 = 114 + 4 = 118^\circ
\]
Now we have the measures of all angles:
- \( m \angle Q = 31^\circ \)
- \( m \angle R = 118^\circ \)
- \( m \angle S = 31^\circ \)
Finally, we can summarize the results:
- The value of \( x \) is \( 6 \).
- The measures of the angles are:
- \( m \angle Q = 31^\circ \)
- \( m \angle R = 118^\circ \)
- \( m \angle S = 31^\circ \)
Thus, the measure of angle \( Q \) is:
\[
\boxed{31^\circ}
\]
Quick Answer
The value of \( x \) is 6. The measures of the angles are \( m \angle Q = 31^\circ \), \( m \angle R = 118^\circ \), and \( m \angle S = 31^\circ \).
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