1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pishuonlain [190]
3 years ago
14

Solve y=-3x² + 4.5x – 20 Use the Quadratic formula

Mathematics
1 answer:
statuscvo [17]3 years ago
7 0

Answer:

x=0.75 \pm 2.47067i

Step-by-step explanation:

Quadratic Formula: x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}

√-1 is imaginary number i

Step 1: Define

y = -3x² + 4.5x - 20

a = -3

b = 4.5

c = -20

Step 2: Substitute and Evaluate

x=\frac{-4.5 \pm \sqrt{4.5^2-4(-3)(-20)} }{2(-3)}

x=\frac{-4.5 \pm \sqrt{20.25-240} }{-6}

x=\frac{-4.5 \pm \sqrt{-219.75} }{-6}

x=\frac{-4.5 \pm \sqrt{219.75}(\sqrt{-1} ) }{-6}

x=\frac{-4.5 \pm i\sqrt{219.75} }{-6}

x=\frac{4.5 \pm i14.824 }{6}

x=0.75 \pm 2.47067i

You might be interested in
9. What is the distance along the x axis from order pairs -8, 6 and 4,6
Blababa [14]

Answer:

12 units

Step-by-step explanation:

got it right on edg

5 0
3 years ago
To calculate theoretical probability, divide the number of ______ outcomes by the total number of outcomes.
Alexandra [31]

Answer:desired

Step-by-step explanation: i think it's like 4/8 then the theoretical property

Is 1/8

6 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST X_X
kap26 [50]

Answer:

All circles are similar. Since they are all the same shape; they are all alike. It is a property.

Step-by-step explanation:

5 0
2 years ago
Which descriptions from the list below accurately describe the relationship between triangle QRS and triangle TUV check all that
abruzzese [7]

Answer:

Step-by-step explanation:

From the given figure, from ΔQRS and ΔTUV, we have

∠Q=∠T(56°(given))

∠R=∠U(83°(given))

∠S=∠V(41°(given))

Thus, by AAA similarity of triangles, ΔQRS is similar to ΔTUV.

Also, All the three angles made by both triangles are equal, and also they are similar thus they have same shape.

Thus, option C and D are correct.

6 0
3 years ago
Read 2 more answers
81,27,9,__,__,__,__ fill in the blanks
Sever21 [200]
3, 1, 0.3333, 0.111111
I think
5 0
2 years ago
Other questions:
  • Find the square root of the fraction . 64/100
    11·1 answer
  • What is the solution for |2x-3|<5
    6·1 answer
  • A beverage producer makes two products, Pi Cola, containing 10% cola, and Pi Up, containing 50% cola. How many gallons of Pi Up
    12·1 answer
  • A triangle with two vertices located at (5, −8) and (5, 4) has an area of 48 square units. Determine one possible location of th
    10·1 answer
  • A coin will be tossed three times, and each toss will be recorded as heads (
    5·1 answer
  • write in slope intercept form an equation of the line that passes through the given points (-2,3) (2,7)​
    5·1 answer
  • For geometry:(<br><br> i’ll give a brainist!!
    8·2 answers
  • If (x – 2k) is a factor of f(x), which of the following must be true? f(2k) = 0 f(–2k) = 0 A root of f(x) is x = –2k. A y interc
    10·1 answer
  • What decimal number does point A on the number line below represent?
    14·1 answer
  • Use properties to rewrite the given equation. Which equations have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p? Select t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!