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
Strike441 [17]
1 year ago
9

Below are the average test scores of two different math class periods. Test 1 Test 2 Test 3 Test 4 Test 5 Test 6 83 87 82 89 4th

period 90 82 90 85 6th period 86 81 88 How do the median test scores of each class period compare? OA. The median test score of 4th period is equal to the median test score of 6th period. B. The median test score of 4th period is greater than the median test score of 6th period. C. The median test score of 6th period is greater than the median test score of 4th period. D. The median test score of 6th period is greater than the median test score of 4th ​
Mathematics
1 answer:
irinina [24]1 year ago
8 0

You need to understand that you're solving for the average, which you already know: 90.

Since you know the values of the first three exams, and you know what your final value needs to be, just set up the problem like you would any time you're averaging something.

Solving for the average is simple

<h3>What is the average?</h3>

Add up all of the exam scores and divide that number by the number of exams you took.

(87 + 88 + 92) / 3 = your average if you didn't count that fourth exam.

Since you know you have that fourth exam, just substitute it into the total value as an unknown, X

(87 + 88 + 92 + X) / 4 = 90

Now you need to solve for X, the unknown

87+88+92+X4 /(4) = 90/ (4)

Multiplying for four on each side cancels out the fraction.

So now you have

87 + 88 + 92 + X = 360

This can be simplified as

267 + X = 360

Negating the 267 on each side will isolate the X value, and give you your final answer

X = 93

Now that you have an answer, ask yourself does it make sense.

I say that it does because there were two tests that were below average, and one that was just slightly above average.

To learn more about the average visit:

brainly.com/question/10428039

#SPJ1

You might be interested in
If each cube in the rectangular prism measures 1 cubic inch, what is the volume of the prism?
algol13
The answer for that is A. 40 cubic in
3 0
3 years ago
The ratio of Victors money to Susies money is 4:7 at first. After Victor spent half of his money and Susie spent $60, Susie had
valkas [14]

Answer:

Victor originally had $80

Step-by-step explanation:

Let Victor have $4x

Let Susie have $7x

Since Victor spent half his money, he now has $2x

Susie spent $60 and thus now has $(7x - 60)

The final ratio of Victor's money to Susie's money is therefore  2x : $(7x - 60). This is given 1:2. Now we just need to solve the proportion by cross-multiplying

2x : (7x - 60) = 1:2

1 × (7x - 60) = 2 × 2x

7x - 60 = 4x

3x = 60

x = 20

Therefore Victor originally had $4x = $80.

7 0
2 years ago
Read 2 more answers
Principal = $47,300 Rate = 3% Time = 4 months What will the total payment plus interest be?
motikmotik

Answer:

Simple Interest (I) =  Principle * Rate * Time

 

so I = PRT

 

P = $47300

R = 3% = 0.03

T = 4months = 0.33years

 

so

Assuming its per year after 4month

 

I = (47300)(0.03)(0.333333)

 

I = 472.999527

 

I = $473

 

Now we'd add the interest(I) to the Principle

 

$47300 + $473 = $47773.00

 

 

Assuming it is per month, after 4months

 

I = PRT

 

I = (47300)(0.03)(4)

 

I = $5676.00

 

Now add the interest to the principle

 

$47300 + $5676 = $52976.00

Step-by-step explanation:

there you go hope this help

3 0
3 years ago
The closer the slope value is to zero, the steeper the line. yes or no
Harrizon [31]
No, that is not true. Use the website desmos.com to try it out yourself. Graph equations like y=1x, y=1/2x, and y=1/4x to try. Then, you will see that as the number gets bigger, the line gets steeper (it gets higher..like a hill..rising..)
7 0
3 years ago
List five bias questions.
ki77a [65]
Go to Calvin. Edu hope this helps.
4 0
3 years ago
Other questions:
  • Will mark Brainliest!!
    7·1 answer
  • The sum of seven and the product of two and a number x
    5·1 answer
  • Mae Ling earns a weekly salary of $325 plus a 6.5% commission on sales at a gift shop. How much would she make in a work week if
    15·1 answer
  • Suzy decided to purchase 3 points in order to lower her interest rate on her 125,000 mortgage
    7·1 answer
  • Here we will study the function f (x) = e ^ x sin (x), where x ∈ [0, 2π]. a) Determine where the function is decreasing and incr
    15·2 answers
  • What are recriprocals
    5·2 answers
  • F(x) = 2x – 1 What is f(13)?
    10·1 answer
  • Use the disk method or the shell method to find the volumes of the solids generated by revolving the region bounded by the graph
    10·1 answer
  • Can you help me image is here
    7·2 answers
  • Which expression is equivalent to StartFraction StartRoot 2 EndRoot Over RootIndex 3 StartRoot 2 EndRoot EndFraction?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!