Answer: should be no solution
Step-by-step explanation:
There are no values of x
that make the equation true.
Answer:
70°
Step-by-step explanation:
A right angle is 90°. 90°-20°=70°
Answer:
$1.80
Step-by-step explanation:
4x = 7.20
x = 1.80
Answer:
x = (-5 ± 2√10) / 3
Step-by-step explanation:
5 − 10x − 3x² = 0
Write in standard form:
-3x² − 10x + 5 = 0
Solve with quadratic formula:
x = [ -b ± √(b² − 4ac) ] / 2a
x = [ -(-10) ± √((-10)² − 4(-3)(5)) ] / 2(-3)
x = [ 10 ± √(100 + 60) ] / -6
x = (10 ± 4√10) / -6
x = (-5 ± 2√10) / 3
