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
morpeh [17]
3 years ago
8

Find the discriminant of 5x^2+3x-5=0 for x

Mathematics
2 answers:
grandymaker [24]3 years ago
7 0

For this case we have that by definition, a quadratic equation is of the form:

ax ^ 2 + bx + c = 0

Its roots are given by:

x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}

By definition, the discriminant is given by:

D = b ^ 2-4 (a) (c)

According to the given equation we have to:

a = 5\\b = 3\\c = -5

Substituting:

D = 3 ^ 2-4 (5) (- 5)\\D = 9 + 100\\D = 109

Answer:

The discriminant is 109

Marta_Voda [28]3 years ago
4 0
The discriminant is 109
You might be interested in
Diberi jumlah nilai bagi empat nombor genap berturut-turut ialah 60,cari nombor terbesar.
Gala2k [10]

Answer:

A

Step-by-step explanation:

4 0
1 year ago
Read 2 more answers
Help! Give brainliest!
dsp73
  • Initial population=145,201

Total years=2037-2001=36

\\ \sf\longmapsto S=P\left(1+\dfrac{r}{100}\right)^t

\\ \sf\longmapsto S=145201\left(1+\dfrac{5}{100}\right)^{36}

\\ \sf\longmapsto S=145201\left(\dfrac{105}{100}\right)^{36}

\\ \sf\longmapsto S=145201(1.05)^{36}

\\ \sf\longmapsto S=145201(5.79)

\\ \sf\longmapsto S\approx 840713

4 0
2 years ago
Read 2 more answers
3
ASHA 777 [7]

Answer:

A. hundreds

B. ones

C.. tens

D. tens

E. 10,000

F. ones

7 0
3 years ago
Read 2 more answers
Can you solve -4a^ - (6a-2) + 3 (a^-1).the arrows that are pointing up is exponent 2.also please show work
Burka [1]
First step is to distribute.
-4a^2 - 6a +2 + 3a^2 -3
Combine like terms
-a^2 -6a -1
5 0
3 years ago
Find the sum of the first 20 terms of an arithmetic sequence with an 18th term of 8.1 and a common difference of 0.25.
il63 [147K]

The sum of the first 20 terms of an arithmetic sequence with the 18th term of 8.1 and a common difference of 0.25 is 124.5

Given,

18th term of an arithmetic sequence = 8.1

Common difference = d = 0.25.

<h3>What is an arithmetic sequence?</h3>

The sequence in which the difference between the consecutive term is constant.

The nth term is denoted by:

a_n = a + ( n - 1 ) d

The sum of an arithmetic sequence:

S_n = n/2 [ 2a + ( n - 1 ) d ]

Find the 18th term of the sequence.

18th term = 8.1

d = 0.25

8.1 = a + ( 18 - 1 ) 0.25

8.1 = a + 17 x 0.25

8.1 = a + 4.25

a = 8.1 - 4.25

a = 3.85

Find the sum of 20 terms.

S_20 = 20 / 2 [ 2 x 3.85 + ( 20 - 1 ) 0.25 ]

         = 10 [ 7.7 + 19 x 0.25 ]

         = 10 [ 7.7 + 4.75 ]

         = 10 x 12.45

         = 124.5

Thus the sum of the first 20 terms of an arithmetic sequence with the 18th term of 8.1 and a common difference of 0.25 is 124.5

Learn more about arithmetic sequence here:

brainly.com/question/25749583

#SPJ1

8 0
1 year ago
Other questions:
  • Tyson saved 500 dollars for a week-long vacation. He did not keep close track of how much he spent the first three days. On the
    5·1 answer
  • How are surveys created to collect and analyze data?
    9·1 answer
  • -3(h-4)-2(-6h+5)<br>What is this problem im having trouble with it?​
    7·1 answer
  • For the equation y = 2x^2 − 5x + 18, choose the correct application of the quadratic formula.
    7·1 answer
  • 3. y = -2x - 4<br> Slope = -2<br> y-intercept = _
    6·1 answer
  • For the following question, what is the value of x to the nearest tenth?
    10·1 answer
  • Does anyone know this
    14·1 answer
  • Giving Brainiest for the correct answers.
    6·1 answer
  • (4x + 11)° (5.6 - 10)​
    9·1 answer
  • Please help, I really need to know how to do it
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!