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
lisabon 2012 [21]
3 years ago
10

I need help doing this.

Mathematics
1 answer:
Elanso [62]3 years ago
3 0

a[n] = 7n - 16

The fifth term is a[5]

a[5] = 7(5) - 16 = 35 - 16  = 19

Answer: C. 19

You might be interested in
Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t
PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

P(X

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0
3 years ago
How could you explain the sine and cosine relationships to someone who doesn't know about the unit circle? What visuals could yo
sukhopar [10]
If you have a unit circle, it means that you have a circle of radius r = 1 unit. So if we consider the scalene triangle of the figure, its vertical side is the sine of the theta angle and its horizontal side is the cosine of the theta angle. Then to find the hypotenuse of the triangle you use the Pythagorean theorem, thus relating the sine and cosine measures. I attach the solution.

8 0
3 years ago
Suppose the total benefit of watching 1 baseball game is 100, the total benefit of watching 2 games is 120, and the total benefi
77julia77 [94]

Answer:

A. 5

Step-by-step explanation:

The marginal benefit of an article, B_m is calculated as:

B_m=\frac{DB_t}{DQ}

Where DB_t is the change in the total benefit of the article, and DQ is the change in the units of the article.

If we want to know the marginal benefit of watching the 3rd game, we need to use the information of total benefit of watching 2 games and 3 games.

In this case, the total benefit of watching 2 games is 120 and the total benefit of watching 3 games is 125, so DB_t and DQ are equal to:

DB_t=125-120=5

DQ = 3 - 2 = 1

Then, the marginal benefit of watching the third game is:

B_m=\frac{5}{1}=5

4 0
3 years ago
I don’t 100% remember how to turn this into a standard problem.. could someone help me really quick?
marin [14]
Standard form is ax^2+bx+c=0

First evaluate the exponent and expand (foil).
y= 3(x^2-4x+4)+1

Then distribute the 3
y= 3x^2-12x+12+1

Combine like terms
y=3x^2-12x+13

Final answer: 3x^2-12x+13=0
6 0
3 years ago
Translate this phrase into an algebraic expression.
Levart [38]

Answer:

(n*19)-4

Step-by-step explanation:

A product is the result of multiplication, so the product of a number (represented as n) and 19 would be n*19. Put these in parentheses, so that it remains organized and you don't become confused later.

Then 4 less would simply mean you subtract 4 from the product of n and 19.

(n*19)-4

7 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me with #13
    5·1 answer
  • Please help me with some Algebra 2. Last stretch of the trimester and it’s 3:13AM. It’s my own fault for getting myself into thi
    7·1 answer
  • Suppose y varies directly with x. if y=6 when x=2 find x when y=12
    10·2 answers
  • What is a Theorem? PLEASE HELP!! a A known fact. b Information that seems true but must be proven. c A definition. d A formula.
    6·1 answer
  • A ramp has a horizontal distance of 10 feet and a vertical rise of 3 feet. Find the length of the ramp. Round to the nearest ten
    15·2 answers
  • What is the approximate value of √65?
    7·1 answer
  • A ball is dropped from a height of 10 meters. Each time it bounces, it reaches 50 percent of its previous height. The total vert
    9·2 answers
  • I don't think this is correct plz check me
    9·1 answer
  • 6th grade math help me plzzzz
    11·1 answer
  • PLZ PLZ PLZ Solve this
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!