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
masha68 [24]
2 years ago
15

Math test , if 9 = 90 , 8 = 72 , 7 = 56 , 6 = 42 , 3 = ?

Mathematics
2 answers:
eimsori [14]2 years ago
7 0

Answer:

12

Step-by-step explanation:

Elanso [62]2 years ago
6 0

Answer:

3 = 12

Step-by-step explanation:

9 * (9+1) = 9 * 10 = 90

8 * (8+1) = 8 * 9 = 72

7 * (7+1) = 7 * 8 = 56

6 * (6+1) = 6 * 7 = 42

<em>---------------------------</em>

Optional Steps (for bigger numbers):

Hence, the formula is

a = b(b+1)

= b² + b

<em>----------------------------</em>

<em />

Hence,

3 * 4 = 12

Hence,

3 = 12

<em>Hope this helps and be sure to have a wonderful time ahead! :D</em>

You might be interested in
When is the additive relationship used? Select all that apply.
Mrac [35]

Answer:

your answer is for sure D but I think C is also the answer

Step-by-step explanation:

Additive relationship are two quantities can be expressed as related to each other through addition. It can be written as y = x + a, where y is related to x through the addition of a constant, a. The value for a may be positive or negative.

7 0
3 years ago
Read 2 more answers
A professor has recorded exam grades for 10 students in his​ class, but one of the grades is no longer readable. If the mean sco
Nostrana [21]

Answer:

unreadable score = 35

Step-by-step explanation:

We are trying to find the score of one exam that is no longer readable, let's give that score the name "x". we can also give the addition of the rest of 9 readable s scores the letter "R".

There are two things we know, and for which we are going to create equations containing the unknowns "x", and "R":

1) The mean score of ALL exams (including the unreadable one) is 80

so the equation to represent this statement is:

mean of ALL exams = 80

By writing the mean of ALL scores (as the total of all scores added including "x") we can re-write the equation as:

\frac{R+x}{10} =80

since the mean is the addition of all values divided the total number of exams.

in a similar way we can write what the mean of just the readable exams is:

\frac{R}{9} = 85\\ (notice that this time we don't include the grade x in the addition, and we divide by 9 instead of 10 because only 9 exams are being considered for this mean.

Based on the equation above, we can find what "R" is by multiplying both sides by 9:

\frac{R}{9} = 85\\R=85*9= 765

Therefore we can now use this value of R in the very first equation we created, and solve for "x":

\frac{R+x}{10} =80\\\frac{765+x}{10} =80\\765+x=80*10=800\\765+x=800\\x=800-765=35

4 0
3 years ago
A recipe calls for four 12.6-ounce cans of chicken broth. How many ounces of chicken broth does the recipe require?
Mrac [35]

Answer:

The answer is 50.4

Hope this helps :)

<em>-ilovejiminssi♡</em>

6 0
3 years ago
Tommy opens an account with $50 and deposits $10 a week. The same week, Shelby opens an account with $25 and adds $10 a week. ho
asambeis [7]
There is no solution since they are both adding $10 to their accounts every week.
6 0
3 years ago
Q)on a book case there are 35 science books ,28 history books,10 cook books,and 10 mystery novel .how many books are on the book
Finger [1]

Answer:

83

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • 9/g +2h+5 g=3 ad h=6
    8·1 answer
  • The frequency table was made using a spinner with sections that are numbered 1 through 6.
    13·2 answers
  • Can someone help me with these two questions please??
    6·1 answer
  • Solve the inequality:<br><br> 3x-3&lt;9<br><br> 5x+2&lt;32
    12·1 answer
  • We are all in this together during tough times like this help a brother out
    6·1 answer
  • (7x-y=7<br>(x+2y=6 estimate the solution to the system of equations ​
    14·1 answer
  • Question 1
    5·2 answers
  • You decide to put $5000 in a savings account to save $6000 down payment on a new car. If the account has an interest rate of 7%
    10·1 answer
  • If there are 21 ladybugs how many bumblebees?​
    5·1 answer
  • Evaluate -2a + 4b - 3c <br><br>When a = 0.5, b = -3, and c = -0.25​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!