What is 949 rounded to the nearest ten and hundred

Mathematics

2 answers:

Alex73 [517]2 years ago

5 0

Answer:

Nearest ten - 950

Nearest hundred - 900

Step-by-step explanation:

Given : Number 949.

To find : What is 949 rounded to the nearest ten and hundred ?

Solution :

Rule of rounding :

1) If the rounding digit after number is greater than or equal to 5 then the number added by 1.

2) If the rounding digit after number is less than 5 then the number remain constant and rest became zero.

Round to the nearest ten,

In 949, ones place is 9>5 so the number became 950.

Round to the nearest hundred,

In 949, tens place is 4<5 so the number became 900.

myrzilka [38]2 years ago

3 0

Rounded to nearest ten--- 950 Rounded to nearest hundred--- 900 A trick you can use for rounding-------- 5 or more, raise the score; 4 or less, let it rest.

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Evaluate the expression. StartFraction 9 factorial Over 3 factorial EndFraction 3 6 60,480 362,874

REY [17]

Answer:

60,480 is the correct answer.

Step-by-step explanation:

First of all, let us have a look at the formula of factorial of a number 'n':

$n! = n \times (n-1) \times (n-2) \times ...... \times 1$

i.e. multiply n with (n-1) then by (n-2) upto 1.

Keep on subtracting 1 from the number and keep on multiplying until we reach to 1.

So, $9!$ can be written as: $9 \times 8 \times 7 \times ...... \times 1$

Similarly $3!$ can be written as: $3 \times 2 \times 1$

Re-writing $9 !$ :

$9 \times 8 \times 7 \times ...... 3 \times 2 \times 1\\\Rightarrow 9 \times 8 \times 7 \times ...... 3 !$

Now, the expression to be evaluated:

$\dfrac{9!}{3!} = \dfrac{9 \times 8 \times 7 \times ..... \times 3!}{3!}\\\Rightarrow 9 \times 8 \times 7 \times 6 \times 5 \times 4\\\Rightarrow 60480$