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
astraxan [27]
2 years ago
11

Ralph’s average score for 5 tests was 82. on four of the tests his scores were 85, 73, 92, 66. what was the fifth test score?

Mathematics
1 answer:
SCORPION-xisa [38]2 years ago
5 0

Answer:

94

Step-by-step explanation:

Let the unknown number be denoted by the variable, x. Also note that, the average can be found by adding all values together and dividing by the amount of values there are.

Set the equation:

(85 + 73 + 92 + 66 + x)/5 = 82

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Simplify first by combining like terms, and then do the opposite of PEMDAS.

PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& roots)

Multiplications

Divisions

Additions

Subtractions.

Combine like terms:

(85 + 73 + 92 + 66 + x)/5 = 82

(316 + x)/5 = 82

Next, isolate the x, by multiplying 5 to both sides of the equation:

(316 + x)/5 * 5 = (82) * 5

316 + x = 82 * 5

316 + x = 410

Lastly, subtract 316 from both sides of the equation:

x + 316 = 410

x + 316 (-316) = 410 (-316)

x = 410 - 316

x = 94

94 is the final test score.

You might be interested in
Need help with ASAP!
Evgesh-ka [11]

Answer: 8y^6x^6

Step-by-step explanation:

Volume = l*w*h so multiply all the variable by <u>multiplying the numbers and adding the exponents</u> so

2y^2*4x^4y=8y^3x^4

then 8y^3x^4*x^2y^3=8y^6x^6

8 0
2 years ago
Read 2 more answers
A taxi service offers a ride with an $5 surcharge and charges $0.50 per mile.
Butoxors [25]

Answer:

50 miles

Step-by-step explanation:

x = (30 - 5) / 0.50

<em>Subtract To Solve Parentheses</em>

x = 25 / 0.50

<em>Divide</em>

x = 50

7 0
3 years ago
HELPPPPP ASAPPPPPP!!!!! PLZZZZZ!!!!
BlackZzzverrR [31]
The answer would be horizontal reflection because it has been reflected over a horizontal line. Hope this helps :-)
8 0
2 years ago
Read 2 more answers
The figures below are similar, explain what you know about the sides.
dem82 [27]
That they are the exact same shape. Some of the sides will be longer and shorter than the other figure, but same shape.
8 0
2 years ago
Joel scores in 80% of his games. His team is starting the playoffs, and if they make it to the state championship, they will hav
Fittoniya [83]

Answer:

D

Step-by-step explanation:

4 out of 5 games is 80%:

So if we know, as a rule that "Joel scores in 80% of his games.", the probability that he will score in 80% of his games is 1 - that is, we know it for sure

100% sure

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write a problem to represent 6 divided by 1/5
    12·1 answer
  • Which statement are true about the angles in the diagram? Check all that apply
    8·2 answers
  • A number no more than 5. how do you graph this inequality
    11·2 answers
  • Please let me know if per means multiple and of is to divide
    14·1 answer
  • Solve for x: negative 4 over 3, multiplied by x minus 6 equals negative 26
    14·2 answers
  • Car A and car B are traveling at different speeds. Car A can travel 175 miles in the same time it takes car B to travel 125 mile
    7·1 answer
  • A 500-foot weather
    10·1 answer
  • A 747 airplane is 762 inches tall.how tall is it in feet
    7·1 answer
  • The function f(h)=m(1/2)^h gives the mass, m, of a radioactive substance remaining after h half-lives. Cobalt-60 has a half-life
    5·2 answers
  • a delivery person uses a service elevator to bring boxes of books up to an office. the delivery person weighs 160 lb and each bo
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!