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
AlekseyPX
3 years ago
11

Please help asap 20 pts

Mathematics
1 answer:
eduard3 years ago
7 0
The discriminant explains how many solutions the quadratic function has. It is found using this formula:

b^2-4ac

Using the formula, there are three rules. Let's say the discriminant=d:
d<0 - No solution ø
d=0 -ONLY 1 solution
d>0 -2 solutions

In the following graph, there are no solutions as the graph does not hit the x-axis at any point. Thereafter, the discriminant MUST be less than zero. Let's view the options check which one agrees with our answer.

A - Discriminant is greater than 0, which means two solutions. This is WRONG.
B - Discriminant is less than 0, which means no solutions. CORRECT!
C- Discriminant is equal to 0, which means one solution. WRONG!

Your answer is B.
You might be interested in
Please help me i don't know how to do this no more
aalyn [17]

Answer:

z/3 = 3/2 so 2z = 9 z = 4.5 cuz triangles are proportional

5 0
2 years ago
Calculate the approximate probability that at least 2 children have been diagnosed with ASD among the 200 selected children.
mixas84 [53]

Answer:

The approximate probability that at least 2 children have been diagnosed with ASD among the 200 selected children is

0.01 or 1%.

Step-by-step explanation:

Number of selected children = 200

The probability of no child been diagnosed with ASD = P(None) = 198/200 = 0.99

Therefore, the probability of at least two children been diagnosed with ASD = 1 - 0.99 = 0.01.

This is the same as:

If 2 children have been diagnosed with ASD,

therefore, the approximate probability that at least 2 children have been diagnosed is:

2/200 = 0.01.  This value is equal to 1%.

The above are summed up in:

The probability of at least one = 1/200 = 0.05

Therefore, the probability of at least two = 0.05 * 2 = 0.01

b) Generally, to find the probability of at least one event happening, we calculate the probability of none and then subtract that result from 1. That is, P(at least one) = 1 – P(none).  For two events happening, the sum of the probability of at least one in two places is deducted from 1 to get the probability of at least two.

4 0
3 years ago
2/3÷2 1/3= dividing fractions
wolverine [178]

Answer:

3/3

Step-by-step explanation:

3/3

4 0
3 years ago
Read 2 more answers
Can someone help me?
Pani-rosa [81]

Answer: m=−3

Step-by-step explanation: −40−2(3m+1/2)=7m−2

−40+(−2)(3m)+(−2)(1/2)=7m+−2

−40+−6m+−1=7m+−2

(−6m)+(−40+−1)=7m−2

−6m+−41=7m−2

−6m−41−7m=7m−2−7m

−13m−41+41=−2+41

−13m/−13=39/−13

m=−3

What mistake I guess Keith did make is he subtracted 2 from -39 which equaled to -37 which caused him divide -37 by 13 when it should have been 39 divided by 13 because he should have left 39 alone and not have subtracted 2 from it also it should not have been negative basically what I'm trying to say is that he did his division and subtraction wrong.

 

5 0
2 years ago
Read 2 more answers
A plant cell has a lenght of 0.000085 meters. which is this length written in scientific notation ?
Leno4ka [110]

Answer:

8.5x10^-5

Step-by-step explanation:

Move the decimal over between the 8 and the 5, it "hops" 5 times. Since it moved over right, make it negative

8 0
3 years ago
Other questions:
  • Simplify using order of operations: 2(5 – 8) x 42.
    10·2 answers
  • What is the value of x? Triangle with angles labeled as 47 degrees, 71 degrees, and x. 62° 56° 134° 46°
    9·2 answers
  • Claire invests £200 000 in a savings account for 4 years.
    11·1 answer
  • What is the period of y = csc(x)?
    10·2 answers
  • Write an equation in slope-intercept form for the line perpendicular to y=−4x+1 that passes through the point (−7,1)
    13·1 answer
  • A taxi charges a flat rate of $3.00, plus an additional
    12·2 answers
  • HELP ASAP!!
    7·2 answers
  • Find the value of x. Answer options: 92, 2, 180, 88
    10·1 answer
  • A student reads 56 pages in 4 hours. How many pages will the student read in 7 hours? Do these quantities (number of pages read
    7·1 answer
  • Please help me find the answers to all the questions whoever answers all the question I will mark the brainlest.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!