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
Virty [35]
3 years ago
13

If a=-1,b=-6 and c=2 then what is the value of b2-4ac?​

Mathematics
1 answer:
grandymaker [24]3 years ago
4 0

Answer:

-4

Step-by-step explanation:

(-6)(2)-4(-1)(2)

(-12)-(-8)

-12+8=-4

You might be interested in
28.) Find the slope of the line that passes through the pair of points.
DerKrebs [107]

Answer:

the d is right one look this img

4 0
3 years ago
Each course at a community college is worth 1 or 2 credits. A group of students is taking a total of 16 courses that are worth a
Anuta_ua [19.1K]

Answer:

They  are taking 12 2 credit courses

The are taking 4  1 credit courses

Step-by-step explanation:

x = 1 credit courses

y = 2 credit courses

The number of courses is 16

x+y = 16

The number of credits is 28 so multiply the course by the number of credits

1x+2y=28

Subtract the first equation from the second equation

x+2y =28

-x-y=-16

-----------------

y = 12

They  are taking 12 2 credit courses

We still need to find the 1 credit courses

x+y = 16

x+12= 16

Subtract 12 from each side

x-12-12 = 16-12

x =4

The are taking 4  1 credit courses

6 0
3 years ago
I need help with this ^^ <br> It’s about choosing a graph to fit a narrative
jenyasd209 [6]
1. The fourth graph: D
2. The first graph: A
3 0
3 years ago
Consider this figure. Enter the measure of
kotykmax [81]

Step-by-step explanation:

4x + 7x + 2° = 90° { being complementary angles }

11x = 90° - 2°

11x = 88°

x = 88° / 11

x = 8°

<YVZ = <em>7</em><em> </em><em>*</em><em> </em><em>8</em><em>°</em><em> </em><em>+</em><em> </em><em>2</em><em>°</em><em> </em><em>=</em><em> </em><em>5</em><em>8</em><em>°</em>

<em>Hope </em><em>it </em><em>will </em><em>help </em><em>:</em><em>)</em>

3 0
3 years ago
Read 2 more answers
Latasha can read 30 pages of economics in an hour. She can also read 20 pages of sociology in an hour. She spends 4 hours per da
stiv31 [10]

Answer:

Her opportunity cost of reading 10 pages of sociology is 15 pages of Economics

Her opportunity cost of reading 18 pages of economics is 12 pages of sociology.

Step-by-step explanation:

For economics, Latasha reads 1 page in 2 mins (gotten by dividing the number of pages by the time taken to read it i.e 30 pages in 1 hr or 60 mins)

Her sociology is read 1 page in 3 mins (20 pages read in 60 mins)

To read 10 pages of sociology will take 30 mins. She will read 15 pages of Economics in the same time which is the opportunity cost.

In the same vein, It will take her 36 mins to read 18 pages of Economics at the same rate. This is the opportunity cost of reading 12 pages of Sociology (which she reads at 1 page in 3 mins).

8 0
3 years ago
Other questions:
  • Expand and simplify (1-5x)(1+5x)
    14·2 answers
  • What would happen to the slope of the graph of y=2/3×-3 if the line were shifted 6 units up?
    13·1 answer
  • Nuts.com sells raw almonds for $10 per pound and roasted pistachios for $12 per pound. Christopher spends $70, before taxes and
    13·1 answer
  • Question 2*
    5·1 answer
  • Hellllppppppppppp meeeee plzzzzzzz!!!!!!!!!!!!!’
    7·2 answers
  • Can I please get help with this math problem? Thanks in advance.
    6·2 answers
  • Solve the equation below for y.<br><br> 12(y−8) = 14y−2
    7·2 answers
  • A gumball machine has 300 red gumballs. If the red gumballs are 75% of the total number of gumballs, how many gumballs are in th
    7·1 answer
  • Find the circumference of a circle with a diameter of 6 cm. Leave your answer in terms of pi
    11·1 answer
  • Please answer !!!!!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!