Ask question

Ask question

All categories

3 years ago

13

6. A number consists of two digits whose

1 answer:

nignag [31]3 years ago

6 0

Answer:

<em>(c) 53</em>

Step-by-step explanation:

<em>Hi there !</em>

<em>we have a number ab</em>

<em>a + b = 8</em>

<em>ab - 18 = ba</em>

<em>10a + b - 18 = 10b + a</em>

<em>10a - a + b - 10b = 18</em>

<em>9a - 9b = 18 | + (9a + 9b)</em>

<em>9a + 9a - 9b + 9b = 18 + 9(a + b)</em>

<em>18a = 18 + 9×8</em>

<em>18a = 18 + 72</em>

<em>18a = 90</em>

<em>a = 90 : 18</em>

<em>a = 5</em>

<em>a + b = 8</em>

<em>5 + b = 8</em>

<em>b = 8 - 5</em>

<em>b = 3</em>

<em>ab = 53</em>

<em>Good luck !</em>

You might be interested in

What is the gcf of 14 and 22

Phantasy [73]

The multiples of 14 are 1,2,7,14
the multiples of 22 are 1,2,11,22
Therefore 2 is the GCF

7 0

3 years ago

Using the distributive property what is 49 ×17 + 49 × 3

eduard

Answer:

980

Step-by-step explanation:

I did it

5 0

3 years ago

Find the real numbers x and y.<br> 27+yi= 11-x + 4i

Korvikt [17]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:x = -16$

$\qquad \tt \rightarrow \: y =4$

____________________________________

$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: 27 + yi = 11 - x + 4i$

$\qquad \tt \rightarrow \: yi + x = 11 + 4i - 27$

$\qquad \tt \rightarrow \: x + yi = - 16 + 4i$

By equating both equations we get :

$\qquad \tt \rightarrow \: x = - 16$

$\qquad \tt \rightarrow \: y = 4$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0

2 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!

ycow [4]

Answer:

Im answering in a sec

First is 0

X 4 Y 0

second is 2

X 6 Y 2

Third is 4

X 8 Y 4

PLS mark brainiest if correct

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Did I do it right? Making 227,900,000 a scientific notation ??

Ira Lisetskai [31]

Yes, you did. Good job!

6 0

3 years ago

Read 2 more answers