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3 years ago

Not if this correct????

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

5 0

Step-by-step explanation:

(o, -2) is the correct answer because in -90°

P [x,y] =P' [y,-x ]

hope it is helpful to you

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I NEED SOMONES HELP PLEASE I WILL LIKE YOUR COMMENT AND I WILL RATE YOU A 5 STAR PLEASE!! What kinds of characters would you mos

Brilliant_brown [7]

Answer:

Scientist

Step-by-step explanation:

I'm not sure if right but doesn't science fiction goes with science? So maybe Scientist could be in it. Correct me if i'm wrong.

3 0

3 years ago

A number is chosen at random from 1 to 10. Find the probability of not selecting

PilotLPTM [1.2K]

Answer:

0.3

Step-by-step explanation:

Number of ways of selecting r elements from a set of n different elements is given by

C(n,r)=(n r)=n!/(r!(n−r)!)

No of ways of selecting one number out of ten numbers from one to 10 is 10

It can also be calculated using

C(n,r)=(n r)=n!/(r!(n−r)!)

where n = 10 and r = 1

C(10,1)=(10 1)=10!(1!(10−1)!) = 10*9!/ 1!*9! = 10

multiples of 2 in range 1 to 10 are 2, 4, 6, 8 , 10

multiples of 3 in range 1 to 10 are 3, 6, 9

Therefore number which are multiple of 2 and 3 are

2, 3,4,6,8,9,10 ( 7 numbers)

therefore no of ways of selecting multiple of 2 and 3 is 7 ways

number which are not multiple of 2 and 3 in range 1 to 10

1,5,7 (3 numbers)

no of ways of not selecting multiple of 2 and 3 is 3 ways

It can also be calculated using

C(3,1)=(3 1)=3!/(1!(3−1)!)

where n = 3 and r = 1

C(3,1)=(3 1)=3!/(1!(3−1)!) = 3!/(1!(2)!)= 3*2!/ 1!*2! = 2

Therefore no of ways of not selecting multiple of 2 and 3 is 3 ways

probability of not selecting a multiple of 2 or a multiple of 3 = no of ways of not selecting multiple of 2 and 3 /No of ways of selecting one number out of one to 10 = 3/10 = 0.3

4 0

3 years ago

Show all work <br> 6^(5z+4)=6^(7z-2)

Alex73 [517]

Sizjqnsonqoanwoso osjs

7 0

3 years ago

On monday ,jan made wgitmddrawls of $25,$45 and $75 from her savings account .On the sane day, het twin sister lola made withdra

Dafna11 [192]

Part (a):
We will assume that the total amount is Jan's saving account is "m"
Now, "withdrawal" means that she took money from her account, which means that the amount of money in her account decreased by the amount she withdrew.
Sum of negative integers to show her withdrawals = -25$ - 45$ - 75$
Amount of money remaining in her account = m - 145$
The amount of money Jan withdrew = 25$ + 45$ + 75$ = 145$

Part (b):
We will assume that the total amount is Lola's saving account is "n"
Now, "withdrawal" means that she took money from her account, which means that the amount of money in her account decreased by the amount she withdrew.
Sum of negative integers to show her withdrawals = -35$ - 55$ - 65$
Amount of money remaining in her account = n - 155$
The amount of money Lola withdrew = 35$ + 55$ + 65$ = 155$

7 0

3 years ago

write an equation that is perpendicular to x - 3y =3 and passes through the point (5,-9) in slope-intercept form.

Aleksandr [31]

9514 1404 393

Answer:

y = -3x +6

Step-by-step explanation:

The perpendicular line will have the coefficients of x and y swapped (and one of them negated), and will have a constant appropriate to the point the line needs to go through.

The equation will look like ...

x -3y = 3 . . . . . . . . . . . . . given line

3x +y = constant . . . . . . perpendicular line

where "constant" can be found by substituting for x and y.

3x +y = 3(5) +(-9)

3x +y = 6 . . . . equation in standard form

To put this in slope-intercept form subtract 3x:

y = -3x +6

6 0

3 years ago