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
kap26 [50]
3 years ago
14

Which equation has an a-value of –2, a b-value of 1, and a c-value of 3?

Mathematics
2 answers:
12345 [234]3 years ago
6 0

Answer:

1. 0=-2x^{2} +x+3

Step by step explanation:

We are asked to find which of the given equation has our given coefficient values.

Since we know that in quadratic equations a is quadratic coefficient, b is linear coefficient and c is our constant term.

Let us see our given equations one by one.

1. 0=-2x^{2} +x+3

We can see that coefficient of quadratic equation in our given option are:

a (quadratic coefficient)=-2

b (linear coefficient)= 1

c (constant) =3

Therefore, 1st option is correct choice.

2. 0=2x^{2} +x+3

We can see that coefficient of quadratic equation in our given option are:

a (quadratic coefficient)=2

b (linear coefficient)= 1

c (constant) =3

Therefore, 2nd option is incorrect.

3. 0=-2x^{2} +3

We can see that coefficient of quadratic equation in our given option are:

a (quadratic coefficient)=-2

b (linear coefficient)= 0

c (constant) =3

Therefore, 3rd option in incorrect as well.

4.  0=2x^{2} -x+3

We can see that coefficient of quadratic equation in our given option are:

a (quadratic coefficient)=2

b (linear coefficient)= -1

c (constant) =3

Therefore, 4th option is incorrect too.

weeeeeb [17]3 years ago
3 0
The correct answer would be: 0 = <span>-2x2 + x + 3.</span>
You might be interested in
There are 75 students in classes A and B altogether. There are 61 students in classes A and C altogether. The ratio of the numbe
Bezzdna [24]

Answer:

40

Step-by-step explanation:

A +  B=75

A + C = 61

B = 5/3 *C

A+C * 5/3 = 75 then we got the answer

3 0
2 years ago
Read 2 more answers
Evaluate the expression a divided by b for a=24 and b=3
emmainna [20.7K]
The answer is 8...............
4 0
3 years ago
Solve 2x^2=11x+6 by factoring
Ede4ka [16]

Answer:

(x-6) (2x+1)

Step-by-step explanation:

1) move everything over to the left side, so subtract 11x and 6.

2x^2 -11x - 6 = 0

2)multiply 2(a term) with -6 (c term)

x^2 -11x -12

3) factor and find what multiples to -12 and adds up to -11. in this case its -12 and positive 1

(x-12) (x+1)

4) divide -12 and 1 by the original a term (2)

(x-6) (x+1/2)

5) move the denominator of 2 over to the x.

(x-6) (2x+1)

5 0
3 years ago
Please help my 10 year old nephew...
trasher [3.6K]

After, thorough research I believe that there are 265 pine trees and 0 elm trees since decidous and semi-decidous do not grow near conifers.

4 0
3 years ago
Claim: The standard deviation of pulse rates of adult males is less than 11 bpm. For a random sample of 132 adult​ males, the pu
seraphim [82]

Answer:

\chi^2 =\frac{132-1}{121} 114.49 =123.952

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

n=132 represent the sample size

\alpha represent the confidence level  

s^2 =10.7^2 =114.49 represent the sample variance obtained

\sigma^2_0 =11^2=121 represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population variance specification is violated, so the system of hypothesis would be:

Null Hypothesis: \sigma^2 \geq 121

Alternative hypothesis: \sigma^2

Calculate the statistic  

For this test we can use the following statistic:

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

\chi^2 =\frac{132-1}{121} 114.49 =123.952

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case 131. And since is a right tailed test the p value would be given by:

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=1-CHISQ.DIST(123.952,131,TRUE)"

5 0
2 years ago
Other questions:
  • The diagonals of a convex quadrilateral are mutually perpendicular. The sum of the lengths of the diagonals is 12. We want to fi
    9·1 answer
  • The measure of angle A is 15°, and the length of side BC is 8. What are the lengths of the other two sides, rounded to the neare
    7·2 answers
  • On the triangle below which of the following best describes dh
    5·1 answer
  • For which graph is the parent function y=x^2
    9·2 answers
  • What is the range <br> The range is _______
    14·2 answers
  • (Please be clear)
    13·1 answer
  • ms. poe is buying towels for her apartment.she finds some green towels that cost $3 each and blue towels that cost $4 each. She
    12·1 answer
  • An airplane is flying from New York City to Los Angeles. The distance it travels in miles, d, is related to the time in seconds,
    13·1 answer
  • This recipe makes three portions of soup.
    5·1 answer
  • Helpl please urgent!! plzzzzzzzzzzzz
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!