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
daser333 [38]
3 years ago
15

Can someone help me with #3? Please and thank you.

Mathematics
2 answers:
irga5000 [103]3 years ago
8 0
The answer is 42 cause you do ( 18*28=12x) wich is 504=12x which equals 42
Dahasolnce [82]3 years ago
7 0
Assuming that this is a proportional question, the answer would be 42.
I hope this helps you.
You might be interested in
Help me this is the last one I need to do but I'm struggling
Katarina [22]
You would multiply 2 1/2 and 3 3/4, which would give you 9.375 or as a mixed number 9 7/8
3 0
3 years ago
Create a data set that contains 8 to 12 values such that the mean is greater than the median
rewona [7]

8, 8, 8, 8, 8, 9, 9, 9, 9 would work as a sequence.


Median: 8

Mean: 8.4444....

5 0
3 years ago
Solve for x x+14=5x-74​
vitfil [10]

Step-by-step explanation:

x - 5x = -74 - 14

-4x = -88

x = 22

8 0
3 years ago
Read 2 more answers
Determine the mean and variance of the random variable with the following probability mass function. f(x) = (216/43)(1/6)^x, x =
anzhelika [568]

Answer:

The mean of function provided is 1.186.

The variance of the provided f(x) is 0.198

Step-by-step explanation:

It is provided that the probability mass function is,

f(x)= (214/43)×(1/6)ˣ; x=1,2,3

The mean is calculated as,

E(X)=∑  x × f(x)

        x

=1×(216/43)×(1/6)¹ + 2 × (216/43)×(1/6)² × 3 × (216/43)×(1/6)³

=36/43 + 12/43  +3/43

​  =1.186

​  

The mean of function provided is 1.186

Explanation | Common mistakes | Hint for next step

The expected value of the probability mass function,f(x)= (216/43×(1/6)ˣ

 is 1.1861.186 .

Step 2 of 2

To calculate the variance, first calculate  E(X²)=∑ x² × f(x)

= 1² ×(216/43) × (1/6)¹ + 2² × (216/43) × (1/6)² × 3² × (216/43) ×(1/6)³

=36/43 +24/43 +9/43

=1.605

​  

The variance is calculated as,

V(X) =E(X²) - [E(X)]²

=1.605 -(1.186)²

= 0.198

The variance of the provided f(x) is 0.198

Explanation | Common mistakes

The variance of function f(x)=(216/43) × (1/6)ˣ ; x =1,2,3 is 0.198

3 0
3 years ago
Solve for x -6 >_ 10 - 4x
Otrada [13]

We are given this inequality,

-6\geq10-4x

We will follow these steps to solve it:

Step 1:

First let us bring 10 to the left side.

10 is in addition on right, so we apply opposite operation of addition that is subtracting 10 from left side, we get

-6-10\geq-4x

-16\geq-4x

Step 2:

Next we have to eliminate -4 which is in multiplication with x on the right side.

So applying opposite operation of multiplication that is dividing both sides by -4.

We have to consider here that when we divide or multiply with a negative the sign of inequality reverses, that is ≥ becomes ≤ and vice versa.

\frac{-16}{-4}\leq x

x≥4

Answer is last option x≥4.

6 0
3 years ago
Other questions:
  • Principal fourth root of 1
    9·1 answer
  • you are considering 2 jobs. one job pays $250 per week, plus 4.5% commission on all sales. The second job pays $1,800 per month
    12·1 answer
  • How to do fraction ?
    5·2 answers
  • HELP PLZZZZ !!!!!!!!!!!!
    8·1 answer
  • In a bag with 3 red chips, 2 yellow chips, and 1 green chip, what is the probability of getting NO yellow chips on the first 2 t
    7·1 answer
  • The remainder after diving x^4+3x^3-8x^2+5x-9 by x+5 is ____.
    15·1 answer
  • A shipping container is in the shape of a right rectangular prism with a length of 2 feet, a width of 1.5 feet, and a height of
    7·1 answer
  • the sales tax in your city is 4.4% and an item costs 3$ before tax how much tax will you pay on that item
    11·1 answer
  • What is the vertex of the following quadratic equation?
    9·1 answer
  • A scientist used 2 gallons of liquid for ever 7 hours he worked. He uses ------of a gallon each hour he works
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!