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
max2010maxim [7]
3 years ago
6

Differentiate 3x^2-5x​

Mathematics
1 answer:
weqwewe [10]3 years ago
3 0

Answer:

6x - 5

Step-by-step explanation:

Let  \: y = 3 {x}^{2}  - 5x \\  \\  \frac{dy}{dx}  =  \frac{d}{dx} (3 {x}^{2}  - 5x) \\  \\  = 3 \frac{d}{dx}  {x}^{2}  - 5 \frac{d}{dx} x \\  \\  = 3(2x) - 5(1) \\  \\   \boxed{\boxed{\huge \purple{\frac{dy}{dx}} \pink{  = } \orange{6x - 5}}}

You might be interested in
Lightbulbs of a certain type are advertised as having an average lifetime of 750 hours. The price of these bulbs is very favorab
Katyanochek1 [597]

Answer:

(a) Customer will not purchase the light bulbs at significance level of 0.05

(b) Customer will purchase the light bulbs at significance level of 0.01 .

Step-by-step explanation:

We are given that Light bulbs of a certain type are advertised as having an average lifetime of 750 hours. A random sample of 50 bulbs was selected,  and the following information obtained:

Average lifetime = 738.44 hours and a standard deviation of lifetimes = 38.2 hours.

Let Null hypothesis, H_0 : \mu = 750 {means that the true average lifetime is same as what is advertised}

Alternate Hypothesis, H_1 : \mu < 750 {means that the true average lifetime is smaller than what is advertised}

Now, the test statistics is given by;

       T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, X bar = sample mean = 738.44 hours

               s  = sample standard deviation = 38.2 hours

               n = sample size = 50

So, test statistics = \frac{738.44-750}{\frac{38.2}{\sqrt{50} } } ~ t_4_9

                            = -2.14

(a) Now, at 5% significance level, t table gives critical value of -1.6768 at 49 degree of freedom. Since our test statistics is less than the critical value of t, so which means our test statistics will lie in the rejection region and we have sufficient evidence to reject null hypothesis.

Therefore, we conclude that the true average lifetime is smaller than what is advertised and so consumer will not purchase the light bulbs.

(b) Now, at 1% significance level, t table gives critical value of -2.405 at 49 degree of freedom. Since our test statistics is higher than the critical value of t, so which means our test statistics will not lie in the rejection region and we have insufficient evidence to reject null hypothesis.

Therefore, we conclude that the true average lifetime is same as what it has been advertised and so consumer will purchase the light bulbs.

6 0
3 years ago
Can some one awser some of those please thank you please :)
Alexeev081 [22]
5. 1,000,000
6. 9,300
7. 5,070
8. 5, 280
9. 810
10. 220
11. 44,770
12. 76, 000

Those are a few answers for you. Try looking back at your notes (If you copied any) to figure out your problems :)
4 0
3 years ago
Read 2 more answers
You have 800 quarter-inch-long beads. if you use them all to make 16 bracelets, what will be the rate of beads per bracelet
Murljashka [212]
50 bead per bracelet 
5 0
3 years ago
Which of the following expressions represents the solution to -2x ≤ -10?
miv72 [106K]

x=4,3,2 or,1 are the possible

4 0
3 years ago
What operation is implied between the whole number and fraction parts of the mixed number 4 2/3
agasfer [191]

Answer:

0

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • A boy faces north. He turns left until he faces east. How many right angles does he turn?
    9·2 answers
  • Please help with this question thank you see attached image
    13·1 answer
  • Find the equation of a line that passes through (0,0) that is perpendicular to 2x+3y=-6
    6·1 answer
  • Nine times a number decreased by 4 yields four times the number increased by 16
    14·1 answer
  • A​ singer-songwriter wishes to compose a melody. each note in the melody must be one of the 1010 notes in her vocal range. how m
    10·1 answer
  • Simplify the expression, then evaluate when x=5 and y=6. x(y+4)+3(2x+7y)
    13·1 answer
  • Which geographic feature did the Penobscot Indians build their things to live around
    10·1 answer
  • How do I solve this problem?
    8·1 answer
  • The diagram shows two congursnt polygons
    13·1 answer
  • PLEASE NEED HELP ASAP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!