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
IrinaK [193]
2 years ago
8

What is f(3) for the function f(x) = 5x + 7?

Mathematics
1 answer:
Tema [17]2 years ago
8 0
The answer would be 8
You might be interested in
Can somebody help me
Sergeeva-Olga [200]

cis(x)=\cos x+i\sin x\\\\cis15^o=\cos15^o+i\sin15^o\\\\\cos15^o=\dfrac{\sqrt6+\sqrt2}{4};\ \sin15^o=\dfrac{\sqrt6-\sqrt2}{4}\\\\\text{therefore}\\\\7cis15^o=7\left(\cos15^o+i\sin15^o\right)=7\cos15^o+7i\sin15^o\\\\=7\left(\dfrac{\sqrt6+\sqrt2}{4}\right)+7\left(\dfrac{\sqrt6-\sqrt2}{4}\right)i

6 0
3 years ago
What is the rate of change of the function?<br><br>A. -3<br>B. -1/3<br>C. 1/3<br>D. 3​
Rasek [7]

Answer:

c

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A parallel system functions whenever at least one of its components works. Consider a parallel system of 5 components, and suppo
Aneli [31]

Answer:

Probability that component 4 works given that the system is functioning = 0.434 .

Step-by-step explanation:

We are given that a parallel system functions whenever at least one of its components works.

There are parallel system of 5 components and each component works independently with probability 0.4 .

Let <em>A = Probability of component 4 working properly, P(A) = 0.4 .</em>

<em>Also let S = Probability that system is functioning for whole 5 components, P(S)</em>

Now, the conditional probability that component 4 works given that the system is functioning is given by P(A/S) ;

P(A/S) =  {Means P(component 4 working and system also working)

divided by P(system is functioning)}

  P(A/S) =  {In numerator it is P(component 4 working) and in

                denominator it is P(system working) = 1 - P(system is not working)}

Since we know that P(system not working) means that none of the components is working in system and it is given with the probability of 0.6 and since there are total of 5 components so P(system working) = 1 - 0.6^{5} .

 Hence, P(A/S) = \frac{0.4}{1 - 0.6^{5} } = 0.434.    

7 0
3 years ago
What can you do when the unit prices for two comparable items are listed using different units of measure?
Over [174]
When you have two unit prices for two comparable items, you have to convert one of the prices to the other one.
3 0
3 years ago
Read 2 more answers
A cognitive psychologist would like to evaluate the claim that the omega-3 fatty acids can help improve memory in normal adult h
bogdanovich [222]

Answer:

(a)

  • Independent Variable- Dosage of Omega-3 Fatty Acids
  • Dependent Variable - Number of news item remembered

(b)Discrete

(c)Ratio Scale and Discrete Variable

(d) Experimental Method

Step-by-step explanation:

The psychologist wants to evaluate the claim that omega-3 fatty acids can help improve memory in normal adult humans.

(a)In the study, the participants in the two groups were given fish extracts containing Omega-3 (500 mg) and no Omega-3 (0 mg).

The memory test involves measuring the number of items each participant remembers from the past three weeks of news.

Therefore:

  • Independent Variable- Dosage of Omega-3
  • Dependent Variable - Number of news item remembered

(b) The dependent variable is discrete since the number of news items remembered can only be whole numbers.

(c)The independent variable is in milligrams of Omega-3 where the placebo is 0 mg. This is a ratio scale since it has an absolute zero.

Since the dosage is given in multiples of 50mg, it is a discrete variable.

(d)Since the psychologist seeks to manipulate the conditions of the study by introducing Omega-3 to some of the participants and placebo to other participants, it is an experimental distribution.

5 0
3 years ago
Other questions:
  • Which of the following numbers can be expressed as repeating decimals? 3 over 7, 2 over 5, 3 over 4, 2 over 9
    9·2 answers
  • 1. Identify a pair of alternate exterior angles.
    10·1 answer
  • Socks are on sale 4 pairs for $5.How much would you pay for 8 pairs of socks.
    11·2 answers
  • If the y-intercept of graphed line is-72, what is the coordinate you would plot ?<br>​
    9·1 answer
  • Peter is saving money to buy an MP3 player. After one month, he has $85. After 3 months, he has $120. After 4 months, he has $15
    14·1 answer
  • roduction records indicate that 2.8​% of the light bulbs produced in a facility are defective. A random sample of 30 light bulbs
    10·1 answer
  • 2x+2y=17<br> 4x-y=25<br> What is the x value of the system of equations
    5·2 answers
  • PLEASE HELP ASAP!!!!!!!!!!
    13·1 answer
  • What is 2+2 fjjfjfjfjfjfjfjffjfffjf fjfjfjjffjfjfjfjf
    9·1 answer
  • What is 165.982 rounded to the nearset thousand
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!