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hoa [83]
3 years ago
14

What is the simplified form of –9m–2n5 × 2m–3n–6?

Mathematics
1 answer:
maxonik [38]3 years ago
5 0
Your answer would be -18m-6n-30
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Calculate the stress on the snow when the snowboarder stands on the board.
Helen [10]

Answer:

u uninstalled ♭ that ↓ t sugar rx

Step-by-step explanation:

utajtt kytisau

7 0
3 years ago
How many 4-digit multiples of 21 and 15 are there and 4-digit multiples of either 21 or 15 are there?
salantis [7]

Answer:

943

Step-by-step explanation:

21| 1000

   | ----------

       47 | 13

21-13=8

1000+8=1008

21|9999

  |---------

     476|3

9999-3=9996

1008,1029,...,9996

let n be number of terms

a=1008,d=21,l=9996

9996=1008+(n-1)21

9996-1008=(n-1)21

8988=(n-1)21

n-1=8988/21

n-1=428

n=428+1=429

again 15|1000

            |---------

                66|10

15-10=5

1000+5=1005

15|9999

  | ---------

      666|9

9999-9=9990

1005,1020,...,9990

a=1005,d=15,l=9990

let n be number of terms.

9990=1005+(n-1)15

9990-1005=(n-1)15

8985=(n-1)15

n-1=8985/15

n-1=599

n=599+1=600

21=3×7

15=3×5

L.C.M.=3×5×7=105

105)1000(9

      -945

     ____

         55

105-55=50

1000+50=1050

105)9999(

     -945

   ---------

         549

       - 525

        -------

            24

        -------

9999-24=9975

1050,1155,...,9975

let n be number of terms.

d=105

l=a+(n-1)d

9975=1050+(n-1)105

9975-1050=(n-1)105

8025=(n-1)105

n-1=8925/105

n-1=85

n=85+1=86

so there are 86 multiples of 21 and 15

(A∪B)=A+B-(A∩B)

multiples of 21 or 15=429+600-86=1029-86=943

4 0
3 years ago
What is the probability of rolling a number greater than 2 with a 6 sided die, three times in a row?
Fed [463]
A number greater than 2 is: 3, 4, 5, 6
Roll 1: 4 numbers out of 6 numbers total = 4/6 = 2/3
Roll 2: (same as roll 1)
Roll 3: (same as roll 1)

Roll 1 AND Roll 2 AND Roll 3
 2/3      x      2/3       x     2/3    = 2³/3³ = 8/27

Answer: \frac{8}{27}
3 0
3 years ago
Four eighths of Kelly's beads are red, 1 8 18 are white, and the rest are blue. What fraction of Kelly's beads are blue?
Setler79 [48]

Answer:

1/38 of Kelly's beads are blue.

Step-by-step explanation:

four eighths = 1/2 or 1 half

1/2 of them are red.

18 white beads, so number of red beads have to be bigger than 18 since she has blue beads too.

So, we can just estimate she has just one blue bead so then the 18 whites become 19 so we need to make red beads the same amount as it is half of the total.

The total is 38 since 19 + 19 = 38 (total beads)

So, blue is 1/38 as a fraction.

Hope this helps. :)

6 0
3 years ago
Simplify the expression 6^3 + 5(4 - 2).<br><br>28<br>36<br>226<br>234<br><br>​
valina [46]

Answer:

226

Step-by-step explanation:

6^3 + 5(4 - 2)

PEMDAS says parentheses first

6^3 + 5(2)

Then exponents

216 +5(2)

Then multiply

216+10

Then add

226

5 0
3 years ago
Read 2 more answers
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