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iren [92.7K]
3 years ago
6

How do u work out what decimal is equal to 6/20

Mathematics
2 answers:
Studentka2010 [4]3 years ago
7 0
There are 3 ways(or more) of solving this..
The first way:
1) Since 20 is a multiple of 100, you multiply The numerator and denominator by 5: 6/20*5/5= 30/100
2) You should know 30/100 is 0.30 or 0.3
The second way:
1) Simplify 6/20 and you should get 3/10: 6/20 divided by 2/2= 3/10
2) You should know that 3/10 is 0.3
The third way:
1) Divide 6 and 20 and you should get 0.3
You could use whatever way you want or do whatever helps you best. Hope this helps  :)
weeeeeb [17]3 years ago
5 0

Here's how you do it.  You'll use this forever,
so you should memorize it:

A fraction is just a short way to write a division. 
Whenever you see a fraction, it means

             (the top number) divided by (the bottom number).

When you actually do the division, the quotient you get
is the decimal that's equal to the fraction.

To find the decimal equivalent of a fraction, divide
the top number by the bottom number.

           (6)  divided by  (20)  =  0.3 .
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How many ML of a 35% acid mixture and a 95% acid mixture should be mixed to get 120 ML of a 40% acid mixture?
Anon25 [30]

<u>ANSWER: </u>

110ML of 35% acid solution must be mixed with 10ML of 95% solution to obtain 120ML of 40% solution.

<u>SOLUTION:   </u>

First, set up table. fill in the unknowns with variables x and y.  The table is attached below.

From the table shown below, we can easily set up the two equations.  

Sum of values of two acids = Value of mixture  

0.35x + 0.95y = 48  

For convenience, we will multiply the entire equation by 100,

35 x + 95y = 4800     ------ (1)  

Now, Sum of amounts of each acid = Amount of mixture  

x + y = 120    --------- (2)

Multiply eqn 2  with 35 for easy calculation and derive the equation into one variable.

35 = 35x + 35y = 4200  

Subtracting equation (2) from (1),  we get

0 + 60y = 600  

Thus, 60y = 600  

y = \frac{600}{60} = 10

Substituting y = 10 in (2),

35x + 35(10) = 4200  

35x + 350 = 4200  

35x = 4200 - 350  

35x = 3850  

x = \frac{3850}{35} = 110

So, we have x = 110 and y = 10

We can conclude that 110ML of 35% acid solution must be mixed with 10ML of 95% solution to obtain 120 ML of 40% solution.

3 0
3 years ago
The vertices of a triangle are A(0, 0), B(3, 8), and C(9, 0). What is the area of this triangle?
Harlamova29_29 [7]
Answer: 36 units squared.


Explanation:
Area of a traingle is given by,

| 0.5{x1(y2-y3) + x2(y3-y1) + x3(y1-y2)} |

Accepting the values of the coordinates in x's and y's,

x1 =0, y1=0

x2=3, y2=8

x3 =9, y3=0

= | 0.5 × (-72)|
= 36 unit squared.
8 0
3 years ago
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deff fn [24]
The value of the 3 in 6300 os 300 and it is ten times as many as the 3 in 530
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3 years ago
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suter [353]

Answer: 1.5miles/hour

Step-by-step explanation:

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3 years ago
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I need help understanding how to get the answer.
const2013 [10]

Answer:

-157.87

Step-by-step explanation:

1) the rules are:

log_a(bc)=log_ab+log_ac;

and

log_ab^c=c*log_ab.

2) according to the rules above:

log_7(yz^8)=log_7y+8log_7z=-6.19-8*18.96=-157.87.

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2 years ago
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