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
faust18 [17]
2 years ago
10

If 2 = 6, 3 =12, 4 = 20, 5 = 30, 6 = 42 then 9 = ?

Mathematics
1 answer:
Soloha48 [4]2 years ago
6 0
At first you may get confused but look at those numbers carefully :)

as you see first result is divisible buy one of the product (second product in all cases is unknown)
so let's check where it will lead us :)

6/2=3

12/3=4

20/4=5

30/5=6

42/6=7

Now you can clearly see that every number was multiplied by number 1 higher than itself. 
2*(2+1)=6

3*(3+1)=12

4*(4+1)=20

etc...

it means that after equation sign there should be 90 because 

9*(9+1)=90 :)
You might be interested in
6.2megagrams/hectoliter to kilograms/deciliter
lesya [120]

Answer:

6.2 kilograms/ deciliters

Step-by-step explanation:

megagrams to kilograms

1 megagram = 1000 kilograms

hectoliter to deciliter

1 hectoliter = 1000 deciliter

Using conversion factors

6.2megagrams      1000 kilgrams         1 hectoliter

---------------------- * ----------------------- * -------------------------

hectoliter                  1 megagram       1000 deciliters

Canceling like terms

6.2 kilograms/ deciliters

6 0
2 years ago
Read 2 more answers
Martha earned $180 during the summer doing chores. She bought 3 books worth $14 each using her chore money. How much money was l
Viktor [21]

Answer:

$138

Step-by-step explanation:

We can first turn the words into a mathematical equation by substituting words with the information we have:

Total earning - ( Price of three books)

$180 - (Price of one book x 3)

$180 - ($14 x 3)

Finally, after we have created the mathematical equation, we solve it!

$180 - ($14 x 3)

$180 - $42

$138

6 0
2 years ago
Let $r$ and $s$ be the roots of $3x^2 + 4x + 12 = 0.$ Find $r^2 + s^2.$ Pls help.
nirvana33 [79]

Answer:

-56/9

Step-by-step explanation:

By Vieta's formulas,

$r + s = -\frac{4}{3}$ and $rs = \frac{12}{3} = 4.$ Squaring the equation $r + s = -\frac{4}{3},$ we get

$r^2 + 2rs + s^2 = \frac{16}{9}.$ Therefore,

$r^2 + s^2 = \frac{16}{9} - 2rs = \frac{16}{9} - 2 \cdot 4 = -\frac{56}{9}}$

5 0
3 years ago
The cost to rent a van is $19.50 per day plus $0.25 per mile. If you have $157 to
Jobisdone [24]

Answer:

92 miles

Write an inequality for the total cost of the rental.

Cost of the rental = 19.50+0.25x<=44

where x is the number of miles driven.

Subtract 19.50 from both sides.

0.25x<=44-19.50

0.25x<=24.5

x<=24.5/0.25

x<=98

Step-by-step explanation:

6 0
3 years ago
What is the equation of this line? y=−3/2x y=2/3x y=3/2x y=−2/3x Graph of a line passing through the origin and the point begin
iogann1982 [59]

Correct answer: y=(2/3)x

The line passes through the origin (0,0) and the pair (3,2)

the equation y=(2/3)x satisfies both points:

for (0,0): 0=(2/3)*0 = 0

for (3,2): 2 = (2/3)*3 = 2

and therefore is the correct linear function of the line described.

4 0
3 years ago
Read 2 more answers
Other questions:
  • List all possible rational zeros of h(x) = x^3 - 5x^2 - 4x + 20. Then determine which, if any, are zeros.
    12·1 answer
  • Kira drove696 miles in 12 hours. At the same rate, how many miles would she drive in9 hours?
    10·1 answer
  • a baker starts with 4/10 kilogram. of flour to make bread he adds 3/100 kilogram of flour to his bread mixture how much total fl
    8·2 answers
  • Prove that<br> 1+cosθ+sinθ/1+cosθ-sinθ = 1+sinθ/cosθ
    10·1 answer
  • Please help me! Given triangle ABC with A(-4,-2), B(4,4), and C(18,-8) write the equation of the line containing the altitude th
    12·1 answer
  • Show me how to do this please for geometry!!
    10·1 answer
  • Consider the following pair of equations:
    11·1 answer
  • At camp today, kids can choose art, swimming, or music. Of those activities, 40 kids choose swimming, 16 choose art, and 24 choo
    8·2 answers
  • 14.53 less then or greater then 16.3
    10·2 answers
  • Help<br><br><br><br><br><br> 4/10 as a decimal
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!