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
charle [14.2K]
3 years ago
8

$5 PAYPAL + BRAINLIEST TO ANSWER THS

Mathematics
1 answer:
expeople1 [14]3 years ago
5 0

Answer:

Quadratic Equation:

3x^2=2x +5

\text{Standard Form: } 3x^2-2x-5=0

From the standard form of a Quadratic Function, we get:

a=3,\:b=-2,\:c=-5

Discriminant:

\Delta=\left(-2\right)^2-4\cdot \:3\left(-5\right)

\Delta=\left(-2\right)^2+4\cdot \:3\cdot \:5

\Delta=64

From the discriminant, we conclude that the equation will have two real solutions.

State that:

b^2-4ac

b^2-4ac =0:\text{The equation has 1 real solution}

b^2-4ac >0:\text{The equation has 2 real solutions}

By the way, solving the equation given:

$x=\frac{2\pm\sqrt{64}}{2\cdot \:3}$

$x=\frac{2\pm\sqrt{64}}{6}$

$x=\frac{2\pm8}{6}$

$x_{1} =\frac{10}{6}=\frac{5}{3}  $

$x_{2}=\frac{-6}{6} =-1$

You might be interested in
In your biology class, your nal grade is based on several things: a lab score, scores on two major tests, and your score on the
Mariana [72]

Complete Question

In your biology class, your final  grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of your total grade, each major test is worth 22:5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 81 on the first major test, 93 on the second major test, and 85 on the final exam. (Enter your answer to one decimal place)

Answer:

The weighted average is  W = 87.65

Step-by-step explanation:

From the question we are told that

  The worth of the lab score is  25% of total grade

  The worth of each major  test is   22.5% of total grade

   The worth of final exam is  30% of total grade

The  score on lab is  92

The score on first major test 81

The score on second major test 93

 The score on final  exam is  85

Generally the weighted score is mathematically represented as

     W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 87.65

   

   

3 0
3 years ago
Janine inflated a ball to a radius of 18cm and another ball to a radius of 12cm. How much greater was the volume of the air in t
bagirrra123 [75]

Answer:

17,182.08 cm³

Step-by-step explanation:


6 0
3 years ago
A number decreased by 23 is 44. Find the number.
Hoochie [10]

Answer:

A

Step-by-step explanation:

The number is decreased by 23 which means 23 is subtracted from the number.

let the number be x, then

x - 23 = 44 ( add 23 to both sides )

x = 67

The number is 67

3 0
3 years ago
A mail carrier delivered mail to 84 houses in 6 hours. At what rate did the mail carrier deliver the mail?
Vanyuwa [196]

28 hours per house

have a good day <3

8 0
2 years ago
Read 2 more answers
9,240 yd= how many mi?
gizmo_the_mogwai [7]

Answer:

5.25 miles

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Determine the values of h, k, a, and b for the ellipse shown. Use the standard form of the equation. (h, k) = ( , ) a = b =
    7·2 answers
  • X y
    8·1 answer
  • 0.01 written as a percent then round to the nearest tenth of a percent
    6·1 answer
  • The points (-6,-2) and (8,5) are the endpoints of the diameter of a circle. Find the length of the radius of the circle
    6·1 answer
  • Give answer as a fraction
    9·2 answers
  • I need help on this question
    5·2 answers
  • Find the volume of the cylinder.<br><br> r = 5 cm<br><br> h = 9 cm
    13·1 answer
  • Help plzzzzzzz<br>15 points for that​
    7·1 answer
  • Find the discriminant and describe the nature of the root(s) of the equation: 6x2 - 2x - 4 = 0)
    10·1 answer
  • PLSSSSSSS HELPPPPPPPPPP MEEEEEEEEEEEEEE
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!