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
OverLord2011 [107]
3 years ago
14

Please help, this will just take a minute of your time ❤︎ (literally)(Discriminant Worksheet)

Mathematics
1 answer:
igomit [66]3 years ago
6 0

Answer:

\large\boxed{x=-\dfrac{7-\sqrt{97}}{4}\ \vee\ x=-\dfrac{7+\sqrt{97}}{4}}

Step-by-step explanation:

ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta0,\ \text{then an equation has two solutions:}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}\\\\\text{We have:}\\\\-2x^2-7x+10=4\qquad\text{subtract 4 from both sides}\\\\-2x^2-7x+6=0

a=-2,\ b=-7,\ c=6\\\\\Delta=(-7)^2-4(-2)(6)=49+48=97>0\\\\\sqrt\Delta=\sqrt{97}\\\\x=\dfrac{-(-7)\pm\sqrt{97}}{2(-2)}=\dfrac{7\pm\sqrt{97}}{-4}=-\dfrac{7\pm\sqrt{97}}{4}

You might be interested in
Patrica has $425.82 in her checking account. How much does she have in her account after she makes a deposit of $120.75 and a wi
aliya0001 [1]

Answer:

$360.67

Step-by-step explanation:

You would take $425.82 and add her deposit of $120.75 to get $546.57. Next you would the the $546.57 and subtract her withdrawl of $185.90 which will give you $360.67.

4 0
3 years ago
How to find the accurate estimate of the volume?
Daniel [21]
Novels about Harry Potter, a boy who learns on his eleventh birthday that he is the orphaned son of two powerful wizards and possesses unique magical powers of his own. He is summoned from his life as an unwanted child to become a student … More
Releas
5 0
3 years ago
According to a student survey, 16 students liked history, 19 liked English, 18 liked math, 8 liked math and English, 5 liked his
Bogdan [553]
When building a Venn Diagram, I always start from the area with the most overlap to the areas of least overlap. Once you have placed the 3 in the middle, you have counted those people, and therefore you must subtract them from the other surveys. Example: since there are 3 people that like all three subjects, now only have 5 students that like just math and English instead of 8. 

Therefore:
A) 36 Students were in the survey
*Add all the numbers within the Venn diagram up. Overlapping doesn't matter because no one is double counted. 

B) 6 People liked only Math
*Can't touch any other circle but Math

C) 20 Students liked English and math, but not history
*You add 9+5+6, since these bubbles are not overlapping with history. 

I Hope this helps and let me know if you have any further questions!

4 0
3 years ago
In Sarah‘s dance class 1/16 of the girls are also on the soccer team. what is the decimal form of this fraction
Alenkasestr [34]

Answer:0.0625


Step-by-step explanation:


5 0
3 years ago
H(x) = 3x-4 what is h(6)
lina2011 [118]

Answer:

14

Step-by-step explanation:

3*6=18

18-4=14

8 0
3 years ago
Read 2 more answers
Other questions:
  • 4×7.12 in distribitive property
    8·1 answer
  • Given the following absolute value function find the range f(x)= |x+5|-8
    14·1 answer
  • The measures of the angles of triangle RST are in the ratio 2:4:9. What are the measures of the angles ?
    7·1 answer
  • Three students scheduled interviews for summer employment at the Brookwood Institute. In each case the interview results in eith
    14·1 answer
  • Triangle X Y Z is shown. Angle Z W X is a right angle. An altitude is drawn from point W to point Y on side Z X to form a right
    14·2 answers
  • Evaluate the expression when c = 5 and d = 8 <br> d + 6c
    10·1 answer
  • How do you write 80% as a decimal?
    15·2 answers
  • Find the measure of angle A.<br> 1+ 38<br> x + 68<br> A) 30°<br> C) 26°<br> B) 35°<br> D) 60°
    13·1 answer
  • Identify the mode: 59, 46, 42, 54, 63, 63, 71, 39, 51, 49, 72, 77,<br> 61,53
    8·2 answers
  • Karlee has 4 sets of pencils. In each set, 1 pencil is 1/
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!