Answer:
6720
Step-by-step explanation:
number of ways=8P5=8×7×6×5×4=6720
Real numbers are all rational numbers such as -7 and 4/3 and all irrational numbers. Real numbers are mainly used in counting and also in measurement which is used a lot in real world situations. These numbers help is quantify in the real world.
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David and Almudena have between the two 225 euros. Calculate how much money each has if Almudena has 75 euros more than David.
For this case we propose a system of equations:
x: Let the variable that represents Almudena's amount of money
y: Let the variable that represents David's amount of money
According to the statement we have:

Substituting the second equation into the first:

We find the value of the variable x:

Almudena has 150 euros
David has 75 euros
Answer:
Almudena has 150 euros
David has 75 euros
Answer:
-90/11
Step-by-step explanation:
convert each mixed number into a improper fraction
27/11 - 117/11
= -90/11
Answer:
5%
Step-by-step explanation:
fraction empty = empty / total
= 4/ (76+4)
= 4/80
=1/20
Changing to a percent
1/2 *5/5 = 5/100 = 5%