Adding fractions and decimos

Answers

Answer 1

Answer: To add a fraction, you add the numerator(topnumber) to the other numerator. You also add the denominator(bottomnumber) to the other denominator. If the denominators are not alike, youhave to find the LCD and change the fractions, so that they are alike.For example:
1/2 +3/4
The denominators are unalike. So you have tofind the LCD (Least Common Denominator). The LCD is 4. Since 3/4already has 4 as the denominator, you only have to change 1/2. Youchange the 2 to 4, so it will look like this: 1/4. You still aren'tdone. You need to change the numerator. Since you multiply 2 by 2 to getfour, you need to multiply 1 by 2. Now you have:
2/4+3/4 You add and get:
5/4
Since this is an improper fraction, you have to simplify it. You divide the numerator by the denominator:
5 divided by 4 is 1 with 1 left over. You turn it into a fraction. So your answer is 1 1/4.

For decimals, you align the numbers then add.
1.34 + 56.2

1.34 See how I aligned the decimal points?
+56.2 That is how you align decimals. Now you just add.
------------
57.54
For your answer, the decimal point will be aligned to your 2 other points.

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Answers

$\frac78 \cdot \frac12=(7)/(16)$

$\frac78\ \cdot\ \frac12=(7)/(16)$

0.7777…=7/9
Use this fact to show that 0.077777...=7/90

Answers

Step-by-step explanation:

Here we have , 0.7777…=7/9 . And using this fact we need to find show that

0.077777...=7/90 . Let's show this:

In the equation $0.077777...=7/90$ , Let's evaluate RHS :

⇒ $0.077777$

⇒ $(0.77777)/(10)$

But According to question , 0.7777…=7/9 , So

⇒ $(0.77777)/(10)$

⇒ $((7)/(9))/(10)$

⇒ $(7)/(9) ((1)/(10) )$

⇒ $(7)/(90)$

Since , RHS=LHS . Therefore, $0.077777...=7/90$ is proved using fact 0.7777…=7/9 .

A key code must contain 6 numbers. There are 10 numbers available. How many different key codes can be created?

Answers

The first number in the code can be any one of the 10 available.
   For each of those . . .
The second number in the code can be any one of the remaining 9.
   For each of those . . .
The third number in the code can be any one of the remaining 8.
   For each of those . . .
.
.
The sixth number in the code can be any one of the remaining 5.

The total number of possible codes is (10 x 9 x 8 x 7 x 6 x 5) = 151,200 .

Increase 120 centimetres by 24%

Answers

It is a simple problem where 120 centimeters need to be increased by 24%. The increased length can be found by:
120 * (24/100)
= 12 * (24/10)
= 288/10
= 28.8 centimeters
Then the total length of increase = 28.8 cm
Then the increased length = (120 + 28.8) cm
= 148.8 cm
So the length becomes 148.8 cm after it is increased by 24%.

6) A computer programmer worked 12 hours and earned $510. What is the hourly rate?
A)
$42.50
1 hour
B)
$47.25
1 hour
C)
$50.00
1 hour
D)
$41.25
1 hour

Answers

Just do 510 divided by 12 and that will be your answers

Answer:

Step-by-step explanation:

What does 6/8 equal to In equivalent fraction

Answers

3/4 is equivalent to 6/8

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