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3 years ago

Write an expression for " 9 less than three times a number"

Mathematics

1 answer:

hoa [83]3 years ago

8 0

Answer: 3x - 9

Step-by-step explanation: "9 less than three times a number" does not mean 9 minus three times a number, less than actually switches the order around so that 9 less than three times a number actually means three times a number minus 1 which can be read as 3x - 9.

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How to solve combing functions Do I do this pls help

Over [174]

Answer:

3x - 2

Step-by-step explanation:

f(x) + g(x)

sub in functions

2x + 1 + x - 3

combine

3x -2

3 0

2 years ago

in a standard casino dice game the roller wins on the first roll if he rolls a sum of 7 or 11. what is the probability of winnin

Alborosie

Answer-

The probability of winning on the first roll is 0.22

Solution-

As in the game of casino, two dice are rolled simultaneously.

So the sample space would be,

$|S|=6^2=36$

Let E be the event such that the sum of two numbers are 7, so

E = {(1,6), (2,5), (3,4), (4,3), (5,2), (6,1)}

$|E|=56$

$\therefore P(E)=\dfrac{|E|}{|S|}=\dfrac{6}{36}$

Let F be the event such that the sum of two numbers are 11, so

F = {(6,5), (5,6)}

$|F|=2$

$\therefore P(F)=\dfrac{|F|}{|S|}=\dfrac{2}{36}$

Now,

$P(\text{sum is 7 or 11)}=P(E\ \cup\ F)=P(E)+P(F)=\dfrac{6}{36}+\dfrac{2}{36}=\dfrac{8}{36}=\dfrac{2}{9}=0.22$

8 0

3 years ago

How do you determine if 5x-7y=14 is a function?

Pavlova-9 [17]

One way is to graph it and do the vertical line test
it is not a function if we can draw a vertical line in the graph that passes through 2 points of the graph

if we graph this function, we see there is no place we can draw a vertical line and hit the line twice

3 0

3 years ago

Read 2 more answers

When Romano win out with her three sisters I spent 58+9% tax on the meal they are solar 15% to a very divided it up the bill eve

umka21 [38]

Answer:

I'm not sure what the answer you are looking for is but if it is 58 + 9%, plus 15% more, that would be 72.703

8 0

3 years ago

How will adding the value 75 affect the mean and median of the data set 1, 5, 7, 9 , 9, 10?

kenny6666 [7]

Prior to adding 75, the original data has a mean of 41/6 =6.833 & a median of 8

After adding the 75, the mean becomes 116/7 = 16.571 & the median = 9

So the median increased slightly (from 8 to 9) & the mean increased more quickly (from 6.833 to 16.571)

So it's C :The median increases less than the mean increases.

8 0

3 years ago