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3 years ago

Consider all numbers consisting of four different digits all between 1 and 9 . How many of these are odd

Mathematics

1 answer:

Slav-nsk [51]3 years ago

7 0

Answer:

1680

Step-by-step explanation:

Considering repeatition is not allowed.

We can use permutation to reach to the required answer.

Consider four digits to be placed in four boxes. Now for the number to be odd, unit digit must be odd. Therefore, unit digit can only be filled by 1, 3, 5,7, or 9. That is 5 ways. Now, other three boxes can be filled with 8, 7 and 6 ways respectively.

Therefore, Total numbers = 5×8×7×6 = 1680

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tickets to the zoo cost $12 for adults and $8 for children the school has a budget of $240 for the field trip. an equation repre

Yuki888 [10]

Answer: x=

−2

y+20

Step-by-step explanation

240=12x+8y

Step 1: Flip the equation.

12x+8y=240

Step 2: Add -8y to both sides.

12x+8y+−8y=240+−8y

12x=−8y+240

Step 3: Divide both sides by 12.

12x

−8y+240

−2

y+20

Answer:

−2

8 0

3 years ago

A class has a total of 135 absences over 18 weeks. what is the mean number of absences per week?

Butoxors [25]

135 divided by 18 is 7.5 so I would guess 7 each week and maybe possibly 8 on some weeks

5 0

3 years ago

Find the equivalent expression 5^6

Naily [24]

5^12/5^6 Is the correct response. When equal numbers with different exponents are divided then the you must subtract the exponents.
Thus 12-6 = 6.

6 0

3 years ago

FIND PR.PLS HELP BRAINLIEST...

slega [8]

Answer:

6.2 units.

Step-by-step explanation:

We are given two angles and an opposite corresponding side. To solve for an unknown side, we can use the law of sines.

$\frac{8}{sin(90)}=\frac{x}{sin(180-39-90)}=\frac{x}{sin(51)}$

Cross multiplying and solving will get you this:

$x=\frac{8(sin(51))}{sin(90}$

Which can simplify to:

$x=8(sin(51))$

Which putting into a calculator gets you:

$x=6.2$

So the line PR is 6.2 units long.

6 0

3 years ago

Help, we didn't learn this, will give brainiest and 5 stars, Thanks❤️

DENIUS [597]

Answer:

1. 6.2831 2. 7 3. 4.7 4. irrational 5. rational

Step-by-step explanation:

6 0

3 years ago