Answer:
<h2>The graph of y = 2x² + 5x + 9 has zero x-intercepts.</h2>
Step-by-step explanation:
x-intercepts are for y = 0.
Put y = 0 to the equation y = 2x² + 5x + 9:
2x² + 5x + 9 = 0
Calculate the discriminant of quadratic equation ax² + bx + c = 0:
Δ = b² - 4ac
if Δ < 0, then an equation has no solution
if Δ = 0, then an equation has one solution
if Δ > 0, then an equation has two solution.
2x² + 5x + 9 = 0
a = 2, b = 5, c = 9
Δ = 5² - 4(2)(9) = 25 - 72 = -47 < 0 - no solution
Since OC is perpendicular to AB, the line AB gets split evenly. So
So AB=2*6.7=13.4
Ans: Option B, 13.4 units
Answer:
Step-by-step explanation:
1.
Find value of P that makes this true
4p-5=`9
Solve for P by isolating it on one side:
4p-5+5=9+5
4p/4=14/4
P=3.5
2.
Translate the Algebraic Expression:
A waiter earns $128 for 6 hours of work including $86 of tips.
Subtract tips from total:
128-86=42
Divide Value between hours.
42/6=7
$7 per hour
3.
Find the Value of X that makes this true
-4x+26=-2
Solve for X by isolating it on one side:
-4x+26-26=-2-26
-4x/-4=-28/-4
X=7
4.
What is the first correct step in solving the equation:
33-2x=31
Subtract 33 from both sides
HOPE I HELPED!
BRAINLIEST WOULD BE APPRECIATED!
H = 2A/b
h = 2(24/12)
h = 4 units
