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
Annette [7]
3 years ago
10

How to solve this equation equal to zero

Mathematics
1 answer:
hjlf3 years ago
8 0
3x² -16x-12 =0

We can solve this equation using formula.

a=3, b=-16, c=-12

x= \frac{-b+/- \sqrt{b^{2} -4ac} }{2a} 
\\ \\ x= \frac{16+/- \sqrt{16^{2}+4*3*12} }{2*3} = \frac{16+/- \sqrt{400} }{6} = \frac{16+/-20}{6} 
\\ \\ x_{1}= \frac{16+20}{6} =6
\\ \\x_{2}=  \frac{16-20}{6} =- \frac{4}{6} = -\frac{2}{3}
You might be interested in
Determine the angle at the centre of a circle with radius 6.0 cm for an arc length of 8.0 cm.
sveta [45]

Answer:

Third option.

Step-by-step explanation:

You need to remember that the formula used to calculate the arc lenght is:

arc\ length=r C

Where "r" is the radius and "C" is the central angle in radians.

You need to solve for "C":

C=\frac{arc\ length}{r}

You know the radius and the arc lenght, therefore, you can substitute values to calculate the central angle in radians. Therefore, this is:

C=\frac{8.0cm}{6.0cm}

C=\frac{4}{3}radians

4 0
3 years ago
Abigail bought some mangoes at 3 for GH¢ 0.90 and sold all at 4 for GH¢ 1.60.If she made a profit of GH¢ 35.00,how many mangoes
umka21 [38]

Answer:

2

Step-by-step explanation:

Total costs = 4 + (3 * 2) + 5 + 15  

Total costs = 4 + 6 + 5 + 15  

Total costs = $ 30  

Substituting values we have:  

Total change = 32 - 30  

Total change = 2 $

6 0
3 years ago
Let’s look at another one of Homer’s rocket launches. It was launched from ground level with an initial velocity of 208 feet per
kozerog [31]

Answer:

Smax = 676 ft

the maximum altitude (height) the rocket will attain during its flight is 676 ft

Step-by-step explanation:

Given;

The height function S(t) of the rocket as;

S(t) = -16t2 + 208t

The maximum altitude Smax, will occur at dS/dt = 0

differentiating S(t);

dS/dt = -32t + 208 = 0

-32t +208 = 0

32t = 208

t = 208/32

t = 6.5 seconds.

The maximum altitude Smax is;

Substituting t = 6.5 s

Smax = -16(6.5)^2 + 208(6.5)

Smax = 676 ft

the maximum altitude (height) the rocket will attain during its flight is 676 ft

8 0
3 years ago
The school is planing a file trip they have 81 busses .each bus has 62 seats how many students can go
Tresset [83]

Answer:

5,022 Students

Step-by-step explanation:

All you have to do it multiply!

Like so:

81*62= 5,022

4 0
3 years ago
Ross collects lizards , beetles and worms . He has more worms then lizards and beetles together. Altogether in the collection th
den301095 [7]
7 worms, 3 beetles, 2 lizards
<span>I found this by first doing the calculations for the number of legs (26). First, I added the legs for the 3 beetles together to get 18 legs. Then I added the legs for 2 lizards (8) to the beetles’ legs to get 26 legs in total.To find the number of heads I added the number of lizard heads (2) and beetles heads (3) to get five heads. Then I added the 7 worm’s heads to the lizard and beetles heads to get 12 heads in total.</span>
8 0
3 years ago
Other questions:
  • What is the answer/explanation for this question
    7·2 answers
  • PLEASE ANSWER CORRECTLY AND QUICKLY!~
    7·1 answer
  • If you are delt 4 cards from shuffled deck of 52 cards, find the probability that all 4 cards are diamonds
    14·1 answer
  • URGENT WILL GIVE BRAINLIESST
    6·1 answer
  • What is the slope of the line that passes through (-2,5) and (1,4)?<br> -3<br> -2<br> -1/3<br> 1/3
    6·1 answer
  • A cooler is filled with different juices. There are 24 bottles of juice: 6 orange juice, 4 apple juice, 2 cranberry juice, and 1
    5·1 answer
  • If a dice is rolled 150 times and lands on six 29 times what is the probability as a fraction
    10·1 answer
  • Write an equation in slope intercept form for the line with slope 1/4 and y-intercept -6.​
    13·2 answers
  • Keisha placed a painting in the center of a dark sheet
    7·1 answer
  • Cindy Lou deposited $85 in the bank earning 4.5% interest annually. About how many years will it take her to earn $11.48 in inte
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!