Mathematics, 29.03.2021 18:00 AshBorg
EDG-ENUITY MATH 9TH GRADE MARCH 29: ANSWERS IF YALL NEED HELP WITH ANYTHING HIT THE HEART ON MY PROFILE TO NOTIFIE ME THEN TELL ME WHAT U NEED. THIS MEANS CORRECT <<<<< the arrows
What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?
a = -7
b = 1
c = 4
Which equations have a leading coefficient of 3 and a constant term of –2? Check all that apply.
0 = 3x2 + 2x – 2<<<<<<
0 = –2 – 3x2 + 3
0 = –3x + 3x2 – 2<<<<<<
0 = 3x2 + x + 2
0 = –1x – 2 + 3x2<<<<<<
Two of the steps in the derivation of the quadratic formula are shown below.
Step 6: StartFraction b squared minus 4 a c Over 4 a squared EndFraction = (x + StartFraction b Over 2 a EndFraction) squared
Step 7: StartFraction plus or minus StartRoot b squared minus 4 a c EndRoot Over 1 a EndFraction = x + StartFraction b Over 2 a EndFraction
Which operation is performed in the derivation of the quadratic formula moving from Step 6 to Step 7?
subtracting StartFraction b Over 2 a EndFraction from both sides of the equation
squaring both sides of the equation
taking the square root of both sides of the equation<<<<<
taking the square root of the discriminant
The discriminant of a quadratic equation is the value b2 – 4ac. What is the value of the discriminant of 0 = –2x2 + 6x + 13?
140<<<<
Consider the function f(x) = 3x2 + 7x + 2.
What is the value of the discriminant?
✔ 25
How many x-intercepts does this function have?
✔ 2
What are the number of zeros for this function?
two real numbers<
Which graph shows a quadratic function with a discriminant value of 0?
its D<<<
Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.
-5 and -9/2
Which value of b will cause the quadratic equation x2 + bx + 5 = 0 to have two real number solutions?
–5<<<<<
–3
3
4
Describe how to derive the quadratic formula from a quadratic equation in standard form
The quadratic formula is derived from a quadratic equation in standard form when solving for x by completing the square. The steps involve creating a perfect square trinomial, isolating the trinomial, and taking the square root of both sides. The variable is then isolated to give the solutions to the equation.
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Answers: 1
Mathematics, 22.06.2019 02:30
Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.
Answers: 3
Mathematics, 22.06.2019 02:50
Arepresentative from plan 1 wants to use the graph below to sell health plans for his company how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans?
Answers: 1
EDG-ENUITY MATH 9TH GRADE MARCH 29: ANSWERS IF YALL NEED HELP WITH ANYTHING HIT THE HEART ON MY PROF...
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