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
Ugo [173]
2 years ago
8

Use the quadratic formula to solve. Round to the nearest tenth if necessary. 2x^2 -3x -7 = 0

Mathematics
1 answer:
abruzzese [7]2 years ago
8 0

The quadratic formula is:

\frac{-b + \sqrt{b^2 - 4ac} }{2a} and  \frac{-b - \sqrt{b^2 - 4ac} }{2a}

In this case, a = 2, b = -3, and c = -7

So, we can plug in the numbers to get:

  \frac{-(-3) + \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)} and    \frac{-(-3) - \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}

Simplifying, we get:

    \frac{3 + \sqrt{65} }{4} and   \frac{3 - \sqrt{65} }{4}

You need to use a calculator to find what these would be in decimal form. The answer, rounded to the nearest tenth, is: x = 2.8, x = -1.3

You might be interested in
Helppp 100pts
frosja888 [35]

Answer:

.83

Step-by-step explanation:

If you take 100 shows 60 shows got favorable response and in that 50 shows were successful.

So probability for a show to be successful if it got a favorable response is = 50/60 = 0.83

8 0
3 years ago
If $3800 is invested in a savings account for which interest is compounded
Volgvan

$125 per quarter, if quarter means every 3 months.

5 0
3 years ago
El área de un rectángulo se calcula multiplicando la longitud de la base por la longitud de su altura.
ioda

<span>Para obtener el otro número, debemos dividir la base por el área. Haciendo eso obtenemos 8.6 Para verificar, multiplicamos 10.4 y 8.6. 10.4 x 8.6 = 89.44

 Entonces la respuesta es B.) 8.6</span>
4 0
3 years ago
What type of line is the graph of y = 7? A) Vertical B) Horizontal C) Rising D) Falling
Vitek1552 [10]
Vertical line, because it doesn't have an x-coordinate unit of change so the line would just be straight and vertical along the graph (0, 7).
4 0
3 years ago
Deniz had a full gallon of milk. She poured out 444 cups of milk. There are 161616 cups in 111 gallon. About what percent of the
Svetlanka [38]
75% of the gallon of milk is left

16/16-4/16=12/16

12/16=3/4=0.75

7 0
3 years ago
Other questions:
  • Please help..thank you
    15·2 answers
  • Suppose that the proportions of blood phenotypes in a particular population are as follows: A B AB O 0.48 0.13 0.03 0.36 Assumin
    6·1 answer
  • Ddasdsfasd NFLSD kmsdn.nsd
    13·1 answer
  • Need some help asap​
    14·1 answer
  • A credit union loaned out $50,000, part at an annual rate of 6% and the rest at an annual rate of 12% . The collected combined i
    9·1 answer
  • Write the number in scientific notation.<br> 1,920,000
    8·1 answer
  • Find the probability of rolling two dice and getting a sum of 11.
    6·2 answers
  • Marta's line of fit __ a line of best fit because her line __
    11·2 answers
  • X + 8 = -15<br> What does x= ???
    10·1 answer
  • 19) Two of the dozen eggs in a carton are cracked. About what percent of the carton is not cracked? (Round to the nearest whole
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!