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
Luda [366]
2 years ago
7

Kevin will take 4 math tests this term. All of the tests are worth the same number of points. After taking the first 3 tests, hi

s mean test score is 88 points. How many points does he need on his last test to raise his mean test score to 90 points?
Choose the sentence that describes how the quantities in the problem are related.
CHECK

The mean score is the total of all scores minus the number of tests taken.


The total of the scores multiplied by the number of tests taken is the mean score.


The mean score is the total of all scores divided by the total number of tests.


The total of Kevin’s scores is the mean score divided by the number of tests taken.
Mathematics
2 answers:
DiKsa [7]2 years ago
4 0

Answer:

Let the test scores be x1, x2, x3, x4

(x1 + x2 + x3)/3 = 88

x1 + x2 + x3 = 264

(x1 + x2 + x3 + x4)/4 = 90

264 + x4 = 360

x4 = 360-264

x4 = 96

Therefore he should get 96 marks in his 4th test to raise his mean test score to 90

The mean score is the total of all scores divided by the total no. Of tests

Hope this helps!

Nataly_w [17]2 years ago
4 0

Step-by-step explanation:

Answer:

Let the test scores be x1, x2, x3, x4

(x1 + x2 + x3)/3 = 88

x1 + x2 + x3 = 264

(x1 + x2 + x3 + x4)/4 = 90

264 + x4 = 360

x4 = 360-264

x4 = 96

Therefore he should get 96 marks in his 4th test to raise his mean test score to 90

The mean score is the total of all scores divided by the total no. Of tests

You might be interested in
What pair of factors of -45 has a<br> sum of 4?
damaskus [11]

Answer:

9 and -5

Step-by-step explanation:

9*-5=-45

9+-5=4

5 0
2 years ago
Read 2 more answers
Todd placed 32 square tiles along the edge of his wooden dining room table, as shown below. Note: Figure is not drawn to scale.
Flauer [41]

Answer:

The diagonal is 421.

Step-by-step explanation:

This is a difficult question. To find the diagonal, you need to find the base and the height of the square. After that, you need to make it a triangle, by using this equation; A=\frac{1}{2} BH (A being area, B being base, and H being height) then find the length of the hypotenuse of the triangle, which I will do for you.

32*13=416 The B and H = 416. Plug it into the equation now;

A=\frac{1}{2}(416*416)\\\\\\A=\frac{1}{2} 173,056\\\\\\A=86,528Now that you have done that, we know that the area of our new triangle is 86,528.

The diagonal is: 421

8 0
2 years ago
Read 2 more answers
Sixty less than ten times ten
Otrada [13]

Answer:

40

Step-by-step explanation:

10x10=100

100-60=40

Hope this helps! :)

3 0
3 years ago
Ryleigh received a $50 gift card to the frozen yogurt shop for her birthday. The shop sells yogurt sundaes for $4 and yogurt con
timama [110]
The answer is D because the shaded area must go to the origin and it must have a non-dashed line because having 5 sundaes and 10 cones is possible.

9 0
3 years ago
Read 2 more answers
What is 103 + 343 + 252
zmey [24]

Answer:

its 698...............................

5 0
2 years ago
Other questions:
  • Will the side lengths 11,20,35 form a triangle??
    10·1 answer
  • The Eat Right Fruit Company sells 9/15 of a ton of bananas to one customer and 13/15 of a ton of bananas to another customer. Ho
    5·1 answer
  • Please help :( not just the answer but also an explanation i don’t understand
    12·1 answer
  • Marika solved the equation (6x + 15)2 + 24 = 0. Her work is below. 1. (6x + 15)2 = –24 2. StartRoot (6 + 15) squared EndRoot = S
    5·2 answers
  • Please help and thank you
    7·2 answers
  • Write and solve an equation to find the value of x and the missing angle measures.
    6·2 answers
  • Define intersecting lines
    10·1 answer
  • I have 4 factors three of my factors are 1, 2 and 10 what is my forth factor
    8·1 answer
  • Evaluate the function requested. Write your answer as a fraction in lowest terms. find cos B
    7·1 answer
  • Suppose Clare labels the books at a constant speed of s books per minute. Write an equation that represents the relatinoship bet
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!