-4r - (4r-6) simplify with work please
1 answer:
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Answer:
∠ QPR = 56°
Step-by-step explanation:
Δ RST is isosceles ( 2 congruent sides ) , then base angles are congruent
∠ SRT = =
= 68°
∠ PRQ and ∠ SRT are vertically opposite angles and are congruent , so
∠ PRQ = 68°
Δ PRQ is isosceles ( 2 congruent sides ), then base angles are congruent , so
∠ QPR = =
= 56°
X^2 + 6x + 3 = 0
a=1, b=6, c=3
x1=[-6+sqrt (6^2-4*1*3)] / (2*1)
=[-6+sqrt (24)] / (2)
=-0.55
x2==[-6-sqrt (6^2-4*1*3)] / (2*1)
=[-6-sqrt (24)] / (2)
=-5.45
answer A
a=1, b=6, c=3
x1=[-6+sqrt (6^2-4*1*3)] / (2*1)
=[-6+sqrt (24)] / (2)
=-0.55
x2==[-6-sqrt (6^2-4*1*3)] / (2*1)
=[-6-sqrt (24)] / (2)
=-5.45
answer A