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
jonny [76]
2 years ago
5

let a(x) be the amount of money remaining on hiliarys gift cards after purchasing x apps on her phone

Mathematics
1 answer:
Cloud [144]2 years ago
7 0
Ok..? Got any more details?
You might be interested in
What percent of 21 is 7?
prohojiy [21]
33 percent. 

7/21 = 0.3333333
7 0
2 years ago
Read 2 more answers
In a statistics​ class, the standard deviation of the heights of all students was 3.8 inches. The standard deviation of the heig
goblinko [34]

Answer:

The reason why standard deviation of the entire class is greater than standard deviation of males and females considered separately, is that mean values for males and females are different from each other.

Step-by-step explanation:

The concept of mean is well represented by the following formula

mean = \frac{(x1 + x2 + x3 + ..... + xn)}{N}, where x1, x2, xn are the observations and N is the number of observations (population).

Standard deviation represents the distance between each observation and the mean of the population (all observations). The formula for this parameter is:

Standard deviation =√[((x1 - x)² + (x2-x)² + ....+ (xn-x)²)/N-1], where x1, x2,..., xn are the observations and x is the mean value.

In this case you have that each height registered is an observation and the number of observations represents the N value. As you can see if the mean for males is different from that of females their standard deviation will be different too. Usually males have heigths greater than that of females (1.77 vs 1.64, in USA for example), and heights inside each group will be more similar than between groups. Then, when you mix all observation there will be an increase in standard deviation, because you are mixing very different heigths

4 0
3 years ago
Jamie and Sara went shopping at the mall. Jamie spent $25 more than three times what Sara spent. Jamie spent $154.
Basile [38]
Jamie = $25 + 3(Sara)
Jamie = $154

3x + $25 = 154
5 0
3 years ago
Read 2 more answers
Part B: Which box-and-whisker plot displays<br> Mario's data?<br><br><br> Brainliest quick
Gnoma [55]

Answer:

Step-by-step explanation:

i think it's D i have the same test today

5 0
2 years ago
Read 2 more answers
What is the four-term polynomial and factored form of the polynomial? x2 + 7x + 6x – 48 = (x + 7)(x + 6) x2 – 12x + 4x – 48 = (x
IRINA_888 [86]

Answer:

c because i did it

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What are two numbers that multiply to 112 and add to -23
    7·1 answer
  • A wheel has a radius of 9 inches and travels as it spins. How far does the wheel travel in one revolution? Show your work. Use 3
    7·1 answer
  • Deon takes classes at both Westside Community College and Pinewood Community College. At Westside, class fees are $98 per credit
    11·1 answer
  • Provide an appropriate response. Grade points are assigned as follows: A = 4, B = 3, C = 2, D = 1, and F = 0. Grades are weighte
    8·1 answer
  • PLEASE ANSWER ASAP! EXTWEMELY IMPORTANT! MUST BE CORRECT! POINTS GIVEN!
    10·2 answers
  • Please helppp!!! Meee
    12·2 answers
  • If there are 60 min in a hour, 60 sec in min and 10 counts in a second how much is half of a second
    7·1 answer
  • What is the perimeter in square units of the rectangle shown on the coordinate grid?
    5·2 answers
  • Can someone help me?It's urgent and thank you!
    13·2 answers
  • When a polynomial is divided by (x+2), the remainder is -19. When the same polynomial is divided by (x-1), the remainder is 2. D
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!