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
irinina [24]
4 years ago
6

Barry is solving the equation 3x2 - 7x + 12 = 0 using the quadratic formula. He notices that, under the radical, the expression

b2 - 4ac will be negative. This indicates that the equation has
Mathematics
1 answer:
nikklg [1K]4 years ago
5 0
... no real roots.

If the Discriminant is less than zero, the roots are complex (that is, using imaginary numbers). Regular folk say such an equation has no solution.

The graph of this equation, a parabola, hovers above the x-axis. The solution of equaling it to 0 would find where it crosses the x-axis, but it doesn't!
You might be interested in
I NEED HELP ON THIS PROBLEM!!! PLEASE
Allushta [10]

keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

5x+8y=-9\implies 8y=-5x-9\implies y=\cfrac{-5x-9}{8} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{-\cfrac{5}{8}} x-9\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}

well then, so since this equation has that slope therefore

\stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{\cfrac{-5}{8}} ~\hfill \stackrel{reciprocal}{\cfrac{8}{-5}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{8}{-5}\implies \cfrac{8}{5}}}

so we're really looking for the equation of a line whose slope is 8/5 and runs through (10,10)

(\stackrel{x_1}{10}~,~\stackrel{y_1}{10}) ~\hspace{10em} \stackrel{slope}{m}\implies \cfrac{8}{5} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{10}=\stackrel{m}{\cfrac{8}{5}}(x-\stackrel{x_1}{10})

5 0
3 years ago
Help me please with an explanation<br><br> to please
tekilochka [14]
The answer is 8
Explanation- 9x4= 36 and 288 divided by 36 equal 8
8 0
3 years ago
Read 2 more answers
Module 4 End Test Study
Snowcat [4.5K]
You'd do $500 x 0.15 to which gives you 75$ in tax. $500 + $75 = $575 selling price
5 0
3 years ago
A pyramid has a height of 18 centimeters and a base with an area of 26 square centimeters. Find the volume. please Help!
juin [17]

Answer:

156cm cubed

Step-by-step explanation:

i took the test...

4 0
4 years ago
Josh estimate the height of his desk what is reasonable estimate??<br>please help
valina [46]
A reasonable estimate could be any number that makes sense. Say the average elementary student is 4' 10" then a reasonable estimate could be 3' to 3' 6" because the desk would be about a 1' 6" shorter than the person.
5 0
3 years ago
Read 2 more answers
Other questions:
  • If SALARY(HOURS) is the function that describes Al's salary at Bit Labs based on his training, SALARY(56 HOURS), SALARY(56), and
    6·1 answer
  • How many decimal places are in the division of 3.75 divided by0.25
    6·1 answer
  • What is the greatest divisor of 372 that is smaller than 50 and also a factor of 72?
    15·2 answers
  • Ben opened his history book, and noticed that the product of the two pages in front of him was equal to 1122. What are the numbe
    11·1 answer
  • Which of the following lines has a slope of -1/2?<br> x + 2y = 0<br> -x + 2y = 0<br> x - 2y = 0
    6·2 answers
  • DONT ANSWER IF UR NOT SURE SHOW WORK
    11·1 answer
  • 2/7x+1/2x=−40/7−1/6x please explain step by step
    13·2 answers
  • Which fraction is equivalent to 15/30
    9·2 answers
  • Please help with one of these
    13·1 answer
  • PLEASE HELP ME PLS ITS MATH
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!