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
AlladinOne [14]
3 years ago
8

Marika is training for a race track. she starts by sprinting 100 yards. she gradually increases her distance, adding 4 yards a d

ay for 21 days. which explicit formula models this situation ?

Mathematics
1 answer:
iren2701 [21]3 years ago
4 0

Answer: the correct answer is D.

Step-by-step explanation:

You might be interested in
Percentage grade averages were taken across all disciplines at a particular university, and the mean average was found to be 83.
Georgia [21]
Correct Ans:
Option A. 0.0100

Solution:
We are to find the probability that the class average for 10 selected classes is greater than 90. This involves the utilization of standard normal distribution.

First step will be to convert the given score into z score for given mean, standard deviation and sample size and then use that z score to find the said probability. So converting the value to z score:

z-score= \frac{90-83.6}{ \frac{8.7}{ \sqrt{10} } } \\  \\ 
z-score =2.326

So, 90 converted to  z score for given data is 2.326. Now using the z-table we are to find the probability of z score to be greater than 2.326. The probability comes out to be 0.01.

Therefore, there is a 0.01 probability of the class average to be greater than 90 for the 10 classes.
5 0
3 years ago
(FIRST PERSON TO ANSWER GETS BRAINLIEST!!!) A student earned $2500.75 at his summer job making $12.50 per hour. Let h represent
laiz [17]

<u>Answer:</u>

12.50 \space\ h = 2500.75

<u>Step-by-step explanation:</u>

We know from the question that the student earned $12.50 <em>per hour</em>.

Using this information, we can say that if the student worked for <em>h </em>hours, they would make a total of 12.50 × <em>h </em>dollars.

We also know that the total money they earned is $2500.75.

∴ Therefore, we can set up the following equation:

\boxed {12.50 \times h = 2500.75}

From here, if we want to, we can find the number of hours worked by simply making <em>h</em> the subject of the equation and evaluating:

<em>h </em>=<em> </em>\frac{2500.75}{12.50}

  = 200.6 hours

5 0
2 years ago
Read 2 more answers
Easy geometry question about rhombus/measures :))
OLEGan [10]

Answer:

∠1 = 51

∠2= 51

∠3= 39

∠4= 51

3 0
3 years ago
What values will complete this table to show direct variation? Help! And quick!!!
vlada-n [284]

Answer: 0 -4 and -8

Step-by-step explanation:

If you divide -12/-3=4 and 4/4=1

7 0
3 years ago
Read 2 more answers
What is the slope between the points 5,-1 and -2,-3?
pishuonlain [190]
To find slope, use the equation (y2-y1)/(x2-x1). In your case, the equation is going to look like (-3 - -1)/(5 - -2) or (-3 +1)/(5 + 2), and that simplifies to -2/7.
8 0
3 years ago
Other questions:
  • What is -5x + 15 = 35 - 10x
    15·2 answers
  • Andrew plays on a basketball team. In two games he scored 2/5 of the total number of points his team scored. His team scored 55
    13·2 answers
  • What is the answer to -4x - 40y - 80 = 0?
    10·1 answer
  • Lori rented a car for one day. The daily rental rate was $12.50 plus 25 cents per mile. The total cost of her rental was $46. Ho
    8·1 answer
  • Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles.
    5·2 answers
  • Im making this to get a new rank no need to answer answer if you like.
    9·1 answer
  • Outside a home, there is a 10-key keypad with the letters A, B, C, D, E, F, G, H, I, and J that can be used to open the garage i
    7·1 answer
  • What is n if the equation is
    13·1 answer
  • What's 4+4? I am beiing serious. I don't know tthis answer.
    11·2 answers
  • This is more IXL i just nee d enough right answers and I'll be good to go.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!