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abruzzese [7]
3 years ago
13

the sum of the digits of the two-digit number is 5. when the digits are reversed, the number increases by 27. Find the original

number.​
Mathematics
2 answers:
madam [21]3 years ago
8 0
The original number is 14
Ahat [919]3 years ago
3 0
The answer is 14.

“The sum of the two digit number is 5”

1 + 4 = 5


“When the numbers are reversed the number increases by 27.”

14 reversed is 41.

41 - 14 = 27

So, the number is 14.
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The teacher passed out math books.The length is 10 inches and the width is 8 inches.What is the perimeter of each book?
miv72 [106K]

Answer:  The perimeter of each book is:  " 36 in. " .

__________________________________________________

Step-by-step explanation:

__________________________________________________

Note that the given units are all in "inches (in.)" .

Use the formula for the "perimeter of a rectangle" ;

{which happens to work for a "square" as well;

          since a "square" is a rectangle.}.

__________________________________________________

This is based on the assumption that the book is shaped like a

"rectangle"  (or "square" —which is a rectangle).

__________________________________________________

The formula for the Perimeter of a rectangle is:

  P = 2 L  + 2 w  ;

in which:

P =  the perimeter of the rectangle;

for which we shall solve;   [in "inches (in.)" ] ;

L =  the length of the rectangle = 10 in. (given) ;

w = the width of the rectangle = 8 in. (given) .

___________________________________________________

Now, plug the given values for the "length (L)" and the "width (w)" ;

 as follows:

___________________________________________________

    P = (2 * 10 in.)  +  (2 * 8 in.)  ;

    P = (20 in.)  +  (16 in.)  ;

   P = 36 in.

___________________________________________________

Answer:  The perimeter of each book is:  " 36 in. " .

___________________________________________________

Hope this helps!

    Best wishes in your academic pursuits

            — and within the "Brainly" community!

___________________________________________________

3 0
3 years ago
Is the function g(x)= -2x^2 -2x+7 linear or nonlinear?<br><br> HELPP plsss
Kitty [74]

Answer:

Is non-linear

Step-by-step explanation:

It is a quadratic function

8 0
3 years ago
Write an equation of the parabola that has the same shape as the graph of ​f(x)​, but with the point ​(​,​) as the vertex.
erik [133]

Answer:

y=3(x-9)^2+4

Step-by-step explanation:

To move a parabola horizontally to the right, subtract 9.

To move it upward 4 units, you simply have to add 4.

These do not change the characteristics of the shape. I suggest looking at a set of rules that affect how the parabola moves horizontally and vertically.

5 0
3 years ago
I am a trapezium, identify my properties from the following:
vredina [299]

a. my opposite sides are parallel

FALSE. Only the basis sides are parallel.

<u>b. I am a quadrilateral </u>

TRUE. A trapezium has 4 sides.

c. I have all the sides equal

FALSE. The trapezium is a special shape in that it does not, unlike the square or rectangle, have to have any equal side lengths.

8 0
3 years ago
The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the aver
m_a_m_a [10]

Answer:

The true mean \mu it probably could be larger, smaller, or equal to 22

Step-by-step explanation:

False.

By definition the sample mean is defined as:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

For this case the value for the sample size is n =190 and the calculated sample mean is \bar X=22. This value represent the sample and for this case we can't assume that this value represent at all the population as the population mean \mu since we probably have variability from the data of the students at City College.

So we can conclude that the true mean \mu it probably could be larger, smaller, or equal to 22

7 0
3 years ago
Read 2 more answers
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