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love history [14]
3 years ago
11

How to add and subtract rational numbers in fraction form?

Mathematics
1 answer:
Daniel [21]3 years ago
5 0
First you have to convert  the denominators to the Lowest Common Multiple (unless the denominators are equal, of course).

Example   1/4 + 1/2

The LCM of 2 and 4 = 4   so we can write 1/2  as 1*2/2*2 = 2/4. 
Now we can add:-
1/4 + 2/4 = 3/4.

Same thing goes for subtraction.

Example 2:-

5/6 - 1/7  :- 
LCM of 6 and 7  = 6*7 = 42  so we have:-
5*7 / 6*7   - 1*6 / 7*6  
= 35/42 - 6/42  =  29/42
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A card is drawn at random from a standard 52-card deck. Find the probability that the card is not a queen.
vova2212 [387]

Answer:

ok The answer is

Step-by-step explanation:

No of queen: 4

No of total card: 52

Now,

Probability that the card is not a queen : No of queen/ No of total card

4/52 = 1/13

so, the probability that the card is not queen is 1/13

7 0
3 years ago
How do you determine if the following scale factor 4/3 would create an enlargement, reduction, or isometric figure?
lara31 [8.8K]
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3 years ago
write two equations that when graphed look like this *see image*. please help its due soon and i will give ya 75 points for answ
krok68 [10]

The graph is showing the equation of circle x²+y²=4

<h3>What is a circle?</h3>

A circle is a two-dimensional geometry on the plane having a centre point and the circular line is drawn equidistant from the centre point.

The given graph in the question represents the equation of the circle cutting the points on the x-axis and y-axis at 4 which is the radius of the circle.

The equation will be as follows:-

x²+y²=4

Hence the graph is showing the equation of circle x²+y²=4

To know more about circles follow

brainly.com/question/24375372

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Hallway measuring 90ft by 7ft requires half a fluid oz of cleaning solution per square foot. How much cleaning solution is requi
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90 x 7 = 630 square feet total

0.5 fluid ounce per sq ft

630 x 0.5 = 315 fluid ounces are needed

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Write each percent as a fraction and as a decimal to the nearest hundredth.
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