Answer: 9
Step-by-step explanation:
let the two-digit number has the digit 'x' in ten's place and 'y' in one's place.
So, The Original Number will be 10x+y and the Reversed Number will be 10y+x.
Now, According to the given information :
⇒ 5(x+y) + 13 = 10x + y
⇒ 4y + 13 = 5x ......(equation 1)
and,
⇒ 4(x+y) + 21 = 10y + x
⇒ 6y - 21 = 3x ......(equation 2)
By solving equation 1 and 2, we get
y = 8 and x = 9
Hence,
The Original Number = 10x + y = 10×9 + 8 = 98
The Reversed number = 10y + x = 10×8 + 9 = 89
and,
The difference of the original two-digit number and the number with reversed digits is ( 98 - 89 ) = 9.
Answer:
The given statement is false
Step-by-step explanation:
Given that an experiment repeated 5 times is more reliable than an experiment repeated 20 times.
The statement is false.
Any result found by way of experiment will be more reliable if more number of trials are done.
For example, consider toss of a coin. If we try for 2 times, we may get prob for head as 0 sometimes 1/2 or sometimes 1. This is because 2 is very short number of trials to decide. But when you increase to 10, you may get more reliable. SO if number of repititions increase, the more reliable the results would be.
Negative 36 and negative 3
You need to divide.
We are dividing the mixed numeral 33 1/21 by the mixed numeral 5 1/4.
(33 1/2 ) / (5 1/4) =
The first step is to change the two mixed numerals into improper fractions.
33 1/2 = 67/2, and 5 1/4 = 21/4
= (67/2) / (21/4)
Now we are dividing the fraction 67/2 by the fraction 21/4.
To divide a fraction by a fraction, rewrite the first fraction, change division intro multiplication, and flip the second fraction. To divide 67/2 by 21/4, we multiply 67/2 by 4/21.
= 67/2 * 4/21
To multiply fractions, multiply together the numerators, and multiply together the denominators. 67 * 4 = 268; 2 * 21 = 42
= 268/42
Using a calculator, 268/42 = 6.38095...
You can fill 6 full glasses.
If the length is 2ft longer than it’s width
Let’s assume width as X and so the length will be X+2
Perimeter=40ft
Putting the values into a equation, we get,
X+2+X=40
=2X+2=40
=2X=38
=X=19
Therefore
Length =X+2=19+2
=21ft
Width=X=19ft
Area of rectangle =lxb
= 21x19
3992ft
HOPE IT WAS HELPFUL :)
