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malfutka [58]
3 years ago
7

I will give 30 points to whoever answers this correctly and within 5-10 mins.

Mathematics
1 answer:
natali 33 [55]3 years ago
8 0

Answer:

1)The dimensions you  are solving for

length of the rectangular room

width of the rectangular room

2)Now let the length be L and the width be w then

the perimeter is 2L+2W

2L+ 2W  = 24------------------------------(1)

Also, "Twice the length decreased by three times the width is 4 feet" can be written as

2L - 3W = 4-------------------------------------(2)

Solving (1) and (2) by elimination method, by subtraction

2L+ 2W  = 24

2L - 3W = 4

(-)    (-)       (-)

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

0L  +5W = 20

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

5W = 20

W = 4--------------------------------------------(3)

Now by substitution method,substituting (3) in(1)

2L+ 2(4)  = 24

2L + 8 = 24

2L = 24 -8

2L = 16

L = 8

Substituting in the original equation and rechecking the perimeter

=2(8) + 2(4)

=16 + 8

= 24

Thus the found dimensions are correct

3)The length of the room is 8 feet and the width of the room is 4 feet.

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Which pair of numbers is the greatest common factor 15?​
gavmur [86]

Answer:

The answer is 3 and 5

Step-by-step explanation:

3 and 5 is 15 (correct)

10 and 25 is 250 (not correct)

30 and 60 is 1800 (not correct)

60 and 75 is 450 (not correct)

5 0
2 years ago
3 % of 8.85 is what?
vlabodo [156]

Answer:

0.2655

Step-by-step explanation:

Multiply 8.85 by 3. Then Divide it by 100.

You will get the dividend of 0.2655.

5 0
3 years ago
Read 2 more answers
2. Is -1/3-4/5 positive,negative, or zero ?
Ivan
Negative because if you take away from a negative, your just making it smaller... hope this helps!
7 0
2 years ago
9+(-4)-(-2)-(7×0)=the answer<br>​
Crank
<h3>- - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - </h3>

➷ You need to know these rules to do this:

Two different signs next to each other, make a negative sign

Two signs that are the same, make a plus

The answer = 7

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

3 0
2 years ago
Read 2 more answers
Find the square roots by division method of 210,681 please tell me
padilas [110]

Answer:

  459

Step-by-step explanation:

The "long division method" algorithm for square root makes use of the relation described by the square of a binomial.

  (a +b)² = a² +2ab +b² = a² +b(2a +b)

<h3>Steps</h3>

The value for which the root is desired is written with digits marked off in pairs either side of the decimal point.

The initial digit of the root is the integer part of the square root of the most-significant pair. Here that is floor(√21) = 4. This is shown in the "quotient" spot above the leftmost pair. The square of this value is subtracted, and the next pair brought down for consideration. Here, that means the next "dividend" is 506.

The next "divisor" will be 2 times the "quotient" so far, with space left for a least-significant digit. Here, that means 506 will be divided by 80 + some digits. As in regular long division, determining the missing digit involves a certain amount of "guess and check." We find that the greatest value 'b' that will give b(80+b) ≤ 506 is b=5. This is the next "quotient" digit and is placed above the "dividend" pair 06. The product 5(85) = 425 is subtracted from 506, and the next "dividend" pair is appended to the result. This makes the next "dividend" equal to 8181.

As in the previous step, the next "divisor is 2 times the quotient so far: 2×45 = 90, with space left for the least significant digit. 8181 will be divided by 900-something with a "quotient" of 9. So, we subtract the product 9(909) = 8181 from the "dividend" 8181 to get the next "dividend." That result is zero, so we're finished.

The root found here is 459.

__

<em>Additional comment</em>

In practice, roots are often computed using iterative methods, with some function providing a "starter value" for the iteration. Some iterative methods can nearly double the number of good significant digits in the root at each iteration.

Using this "long division method," each "iteration" adds a single significant digit to the root. Its advantage is that it always works, and is generally suitable for finding roots by hand. Once the number of root digits begins to get large, the "divisor" starts to be unwieldy.

8 0
1 year ago
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