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
Llana [10]
3 years ago
8

What is the value of the discriminant of 0=-2x^2+6x+13

Mathematics
1 answer:
klemol [59]3 years ago
6 0

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

36-(4)(-2)(13)= 139
You might be interested in
a math class has a test today there are 30 problems on the test the test has two types of problems multiple choice problems and
Misha Larkins [42]
Fhstdyfhdhdhhdhdhdjdhdjd is the day I wanna play fortnite
6 0
3 years ago
25 equivalent expressions to 8x+12
-Dominant- [34]
Here are some
1 ) 4 ( x - 3 )
   2 ) 10 x - 2 x - 12
   3 ) 8 x - 4 - 8
8 0
2 years ago
X/2.1 = -1.8<br><br> Show your work and check it (write it out plz)
Lerok [7]
X = -1.8 * 2.1
x = 3.78

don't know how i can write it longer
7 0
3 years ago
You have a gift card for a coffee shop worth $90. Each day you use the card to get a coffee for $4.10. Write an explicit formula
Fiesta28 [93]

Answer: The value of the card after you buy your 8th coffee will be $61.3

Step-by-step explanation:

The worth of the gift card for the coffee shop is $90. Each day you use the card to get a coffee for $4.10. This means that the worth of the gift card is reducing by $4.10 each day. This rate is in arithmetic progression.

The formula for the nth term of an arithmetic sequence, Tn is expressed as

Tn = a + (n-1)d

Where a is the first term

d is the common difference

n is the number of days

From the information given,

a = $90

d = - $4.1

The explicit formula representing the amount of money available will be

Tn = 90 - 4.1(n - 1)

The value of the card after you buy your 8th coffee will be

T8 = 90 - 4.1(8 - 1) = T8 = 90 - 4.1×7

T8 = 90 - 28.7

T8 = $61.3

7 0
3 years ago
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
erastova [34]

Answer:

15.85%

Step-by-step explanation:

Empirical rule states that for a normal distribution, 68% of the data falls within one standard deviation, 95% falls within two standard deviation and 99.7% falls within three standard deviation.

Given mean (μ) = 41 months, standard deviation (σ) = 5 months

One standard deviation = μ ± σ = 41 ± 5 = (36, 46)

Therefore 68% falls within 36 months and 41 months

Two standard deviation = μ ± 2σ = 41 ± 2(5) = (31,51)

Therefore 95% falls within 31 months and 51 months

Three standard deviation = μ ± 3σ = 41 ± 3(5) = (26, 56)

Therefore 99.7% falls within 26 months and 56 months

The percentage of cars that remain in service between 46 and 51 months = 32%/2 - 0.3%/2 = 16% - 0.15% = 15.85%

3 0
2 years ago
Other questions:
  • A cylindrical barrel has a radius of 7.6ft and height of 10.8ft. Tripling which dimensions will triple the volume of the barrel?
    8·1 answer
  • The level of college education and wages earned are known to have a strong positive association. Karen concluded that a college
    7·1 answer
  • A multivitamin tablet contains 10.5 mg of calcium. How much calcium does a bottle of 50 tablets contain? Write your answer in gr
    14·2 answers
  • Need help with task! Show work if possible~~
    14·1 answer
  • A norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular. Find the dimensions of a norman
    15·1 answer
  • What is 9713 rounded to the place value
    12·1 answer
  • Write two expressions to show a number increased by 11. Then, draw models to prove that both expressions represent the same thin
    15·1 answer
  • If a man is driving at a rate of 80 km per hour, how many kilometers will he travel in 30 minutes? A. 30 km B. 40 km C. 60 km D.
    6·2 answers
  • Given that x= -3, what is the value of 2ײ - x + 5?​
    8·2 answers
  • Is y/x a positive value together
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!