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3 years ago

12

Hari earns Rs 4300 per month. He spends 80% from his income. How much does he save in a year? please give answer in step by ste

p explaination

1 answer:

timofeeve [1]3 years ago

8 0

Answer:

4300 x 12= 51600

20/100 x 51600

10,320 Rs (also pay bohat kam hai :D )

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What are the steps to (3w^3+7^2-4w+3) and (w+3)

Crazy boy [7]

<span>Equation at the end of step 1 :</span><span> <span> Step 2 :</span></span><span>Equation at the end of step 2 :</span> <span> Step 3 :</span><span> 3w3 + 7w2 - 4w + 3 Simplify / w + 3 </span>Checking for a perfect cube :

<span> 3.1 </span> <span> 3w3 + 7w2 - 4w + 3</span> is not a perfect cube

Trying to factor by pulling out :

<span> 3.2 </span> Factoring: <span> 3w3 + 7w2 - 4w + 3</span>

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: -4w + 3
Group 2: <span> 3w3 + 7w2</span>

Pull out from each group separately :

Group 1: (-4w + 3) • (1) = (4w - 3) • (-1)
Group 2: <span> (3w + 7) • (w2)</span>

<span>Bad news !! Factoring by pulling out fails :

</span>The groups have no common factor and can not be added up to form a multiplication.

Polynomial Roots Calculator :

<span> 3.3 </span>   Find roots (zeroes) of :      <span> F(w) = 3w3 + 7w2 - 4w + 3</span>
Polynomial Roots Calculator is a set of methods aimed at finding values of  w  for which   F(w)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers w which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number  P/Q   then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 3 and the Trailing Constant is <span> 3.

</span>The factor(s) are:

of the Leading Coefficient : <span> 1,3
</span>of the Trailing Constant : <span> 1 ,3

</span>Let us test ....

<span><span> P Q P/Q F(P/Q) Divisor</span><span> -1 1 -1.00 11.00 </span><span> -1 3 -0.33 5.00 </span><span> -3 1 -3.00 -3.00 </span><span> 1 1 1.00 9.00 </span><span> 1 3 0.33 2.56 </span><span> 3 1 3.00 135.00 </span></span>

Polynomial Roots Calculator found no rational roots

Polynomial Long Division :

<span> 3.4 </span>   Polynomial Long Division
Dividing : <span> <span>3w3 + 7w2 - 4w + 3</span>
                              ("Dividend")
</span> By         :   <span> w + 3    ("Divisor")
</span>

<span><span>dividend <span> 3w3 </span>+<span> 7w2 </span>- 4w + 3 </span><span>- divisor<span> <span>* 3w2</span> </span> <span> 3w3 </span>+<span> 9w2 </span> </span><span>remainder -<span> 2w2 </span>- 4w + 3 </span><span>- divisor<span> <span>* -2w1</span> </span> -<span> 2w2 </span>- 6w </span><span>remainder 2w + 3 </span><span>- divisor<span> <span>* 2w0</span> </span> 2w + 6 </span><span>remainder - 3 </span></span>

Quotient : <span> <span>3w2 - 2w + 2</span>
</span> Remainder : <span> -3
</span>

Final result :<span> 3w3 + 7w2 - 4w + 3 over w + 3 </span>

5 0

3 years ago

What is the perimeter of quadrilateral ABCD? a(-3,2) b(4,2) c(3,-3) d(-3,3)

lord [1]

Answer:

Perimeter will be = 21.6

Step-by-step explanation:

As we know the formula to get the length between two points A and B having coordinates A(x,y) and B (a,b) is

AB = √(x-a)²+(y-b)²

We will use this formula to get the lengths of all sides of the quadrilateral.

AB=√(4+3)²+(2-2)² =√7² =7

BC = √(3-4)²+(-3-2)²=√(-1)²+(-5)² = √1+25=√26 = 5.1

CD = √(3+3)²+(-3-3)² = √6²+(-6)² = √72 = 8.5

DA = √(-3+3)²+(3-2)² =√1 = 1

Since perimeter of the quadrilateral = sum of lengths of all sides

Perimeter = 7 + 5.1 + 8.5 + 1 = 21.6

8 0

3 years ago

Read 2 more answers

HELP PLEASE!!! I need help with 94 if you could show the steps that would be very helpful!

aksik [14]

A combination is an unordered arrangement of r distinct objects in a set of n objects. To find the number of permutations, we use the following equation:

n!/((n-r)!r!)

In this case, there could be 0, 1, 2, 3, 4, or all 5 cards discarded. There is only one possible combination each for 0 or 5 cards being discarded (either none of them or all of them). We will be the above equation to find the number of combination s for 1, 2, 3, and 4 discarded cards.

5!/((5-1)!1!) = 5!/(4!*1!) = (5*4*3*2*1)/(4*3*2*1*1) = 5

5!/((5-2)!2!) = 5!/(3!2!) = (5*4*3*2*1)/(3*2*1*2*1) = 10

5!/((5-3)!3!) = 5!/(2!3!) = (5*4*3*2*1)/(2*1*3*2*1) = 10

5!/((5-4)!4!) = 5!/(1!4!) = (5*4*3*2*1)/(1*4*3*2*1) = 5

Notice that discarding 1 or discarding 4 have the same number of combinations, as do discarding 2 or 3. This is being they are inverses of each other. That is, if we discard 2 cards there will be 3 left, or if we discard 3 there will be 2 left.

Now we add together the combinations

1 + 5 + 10 + 10 + 5 + 1 = 32 choices combinations to discard.

The answer is 32.

-------------------------------

Note: There is also an equation for permutations which is:

n!/(n-r)!

Notice it is very similar to combinations. The only difference is that a permutation is an ORDERED arrangement while a combination is UNORDERED.

We used combinations rather than permutations because the order of the cards does not matter in this case. For example, we could discard the ace of spades followed by the jack of diamonds, or we could discard the jack or diamonds followed by the ace of spades. These two instances are the same combination of cards but a different permutation. We do not care about the order.

I hope this helps! If you have any questions, let me know :)

7 0

3 years ago

28 girls and 38 boys volunteer to plant trees at a school. their teacher wants to put them in groups that have girls AND boys. h

Delvig [45]

Answer:

so 14 can go into 28, 2 times and 19 can go into 38 2 times so the techaer can make 2 group with 14 girls and 19 boys in each group.

Step-by-step explanation:

5 0

2 years ago

rick won 27 tickets playing a game. to get a prize, he needs to win at least 30 tickets. how many more tickets can he win to get

Svetach [21]

He needs 3 Tickets to Win a Prize.27×2 is... And that's ur Answer

8 0

3 years ago