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
n200080 [17]
3 years ago
8

On his first three tests, Hiram got scores of 89, 95, and 90. His final test score brought his median score to 91.5. What was I

final test score?
Mathematics
1 answer:
Elena-2011 [213]3 years ago
6 0
The median is the middle score, it is also the average of the two middle scores when total number is even.

original 3 scores:  89, 90, 95  ----> median = 90

with final score:  89,90,X,95  ----> median = 91.5

(90+x)/2 = 91.5
90+x = 183
x = 93

Final score was a 93.
You might be interested in
The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an​ indiv
Usimov [2.4K]
Less than 3 is about 10.75% and greater than 13 is about 6.18%.

To find these percents, you need to find the z-score for each value. Then, use your table to find the correct percent. Be sure to find the side above 13 when you use your chart.

For less than 3:
(3 - 7.45) / 3.6 = -1.24 = The percent below this is 0.1075

For greater than 13:
(13 - 7.45) / 3.6 = 1.54 = The percent above this is 0.0618
7 0
3 years ago
Question 7 of 10<br> What is the solution to this equation
tatyana61 [14]

Answer:

x = 4

Step-by-step explanation:

x + 4(x+5) = 40 (Given)

x + 4x + 20 = 40 (Distribute the 4 into the x and 5)

5x + 20 = 40 (Add like terms)

5x = 20 (Subtract 20 on both sides)

x = 4 (Divide 5 on both sides)

5 0
3 years ago
1/4 kilometer = how many meters
Alchen [17]
The answer to your question is
1/4 kilometer = 0.25 kilometers = 250 meters

You answer is 250 meters
3 0
3 years ago
Pamela's boss rewards her hard work by telling her she is receiving a 12% raise. Pamela had been earning $15 per hour. After the
Maksim231197 [3]
It should be 16.8,
15 x (100% + 12%)
4 0
3 years ago
Read 2 more answers
The coordinates of the vertices of a polygon are shown on the grid below​
AnnZ [28]
Uhm Where is the grid?
5 0
3 years ago
Other questions:
  • Which statement is true ?
    11·1 answer
  • The regular price of a T-shirt is $9.99. It is on sale for 15% off. Sales tax is 6%. If you give the cashier a $10 bill, how muc
    12·1 answer
  • Holly missed 7 of 185 school days this year. Approximately what percent of school days was Holly in attendance?
    13·1 answer
  • Can someone pls help me out
    13·1 answer
  • A basketball player made 5 baskets during a game. Each basket was worth either 2 or 3 points. How many different numbers could r
    7·1 answer
  • Find the cost of 12 items if the cost function is C(x) = 2x +12
    14·1 answer
  • For 6 consecutive days, Alejandro studied for 5 minutes more each day than he did the previous day. Which best represents the ch
    5·2 answers
  • A pool holds 1620 gallons.
    10·2 answers
  • PLEASE HELP ME!
    6·1 answer
  • Use Double dabble method to convert 324 base 10 to binary ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!