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
konstantin123 [22]
3 years ago
7

How do i Solve: 3x2−6x−12=0 ?

Mathematics
1 answer:
MrMuchimi3 years ago
4 0

Answer:

1 + root 5, 1 - root 5

Step-by-step explanation:

I assume you mean 3x^2-6x-12=0.

First, note that you can divide both sides by 3. You get:

x^2-2x-4=0

Use the quadratic equation.

x=\frac{2\pm\sqrt{4+16}}{2}=\frac{2\pm2\sqrt{5}}{2}=1\pm\sqrt{5}

Therefore, x=1 + root 5, 1 - root 5

You might be interested in
The ratio of the length of an airplane wing to its width is 9 to 1. If the length of a wing is 40.4 ​meters, how wide must it​ b
VARVARA [1.3K]
The ratio of length to width is 9:11 is to 9 as x is to 40.41/9 = x/40.4 x = 40.4/9 = 4.48888.. meters
4 0
3 years ago
NEED HELP!! Scenario #1: You flip a coin and roll a six sided die. What is the probability that you will flip heads and roll a n
leva [86]

Scenario #1:

Flipping a coin and rolling a die are independent events, so the combined probability is the product of the individual probabilities.

Flipping a coin: There are two different possible outcomes, heads and tails. You are interested in heads. You are interested in 1 outcome out of 2.

p(heads) = 1/2

Rolling a die: There are 6 different possible outcomes, the numbers 1, 2, 3, 4, 5, and 6. You are interested in a number greater than 2, so your desired outcomes are 3, 4, 5, 6, which means 4 different desired outcomes out of 6.

p(die toss greater than 2) = 4/6 = 2/3

Combined probability:

p(heads followed by number greater than 2) =

= p(heads) * p(die toss greater than 2)

= 1/2 * 2/3

= 1/3

Scenario #2:

There are 4 colors on the spinner. For each color on the spinner, the die can land on one of 6 numbers. 4 * 6 = 24. There are 24 different combined outcomes.

You are interested in blue OR 6. Six outcomes have blue and a number from 1 to 6. Then if the spinner lands in any of the other 3 colors, each one has one outcome of 6 with that color. The total number of desired outcomes is 6 + 3 = 9.

Number of desired outcomes: 9

Number of possible outcomes: 24

p(blue or 6) = 9/24 = 3/8

Final Question:

The scenario that gives you better odds is Scenario #2 since 3/8 > 1/3.


4 0
3 years ago
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ExtremeBDS [4]

Answer:

The percent error based on the average measurements is 0.8%.

Step-by-step explanation:

The standard equation for percent error is [(original - actual)/original} x 100.  The original amount is 100 degrees celcius.  Your average measurement can be found by adding the three temperatures together and dividing by the number of temperatures collected:  98.5 + 99.3 + 99.8 = 297.63/3 = 99.2.  When we place our numbers into the equation and solve, we get:  (100 - 99.2)/100 = 0.008 x 100 (to get our percentage) = 0.8%.

5 0
3 years ago
Between which pair of consecutive integers does √111 lie
lisabon 2012 [21]
B. 10 and 11
This is because 10x10 is 100, so thats less than what you need and then 11x11 is 121, and that is more than you need... So it would be between 10 and 11.
7 0
3 years ago
Read 2 more answers
Find the area of the figure.<br> area<br> units2
Verdich [7]

Answer:

<u><em></em></u>33   units^{2}

I counted the squares.

8 0
2 years ago
Other questions:
  • 2. Which statement is true?
    13·1 answer
  • Which phenomena can cause waves to form in the ocean? Check all that appl
    11·1 answer
  • Combine value to find 615 minus 342
    12·1 answer
  • The equation of a line is x+4y=15
    5·2 answers
  • X/√24-√150/4=3√96/16
    9·1 answer
  • Mustafa is flying his kite, and Ana is watching from 20 m away, as shown. From Ana's perspective there is an
    8·2 answers
  • Find the slope between the points. �. (5, −3) (7, 4)
    6·2 answers
  • Emma is a sales clerk at a bicycle shop. She is paid $6.25 per hour for 30 hours work week plus a commission of 8% of sales. In
    10·1 answer
  • Pls answer with equation
    13·2 answers
  • Plz plz plz help me no links but PLZ ANYTHING
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!