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nata0808 [166]
3 years ago
7

A, b and c stand for three different numbers

Mathematics
1 answer:
creativ13 [48]3 years ago
5 0

To find the mean, you add up the numbers and divide by
how many numbers there are.

So if the mean of   'A' and 'B' is 40, then   A + B = 80 .
And if the mean of 'B' and 'C' is 35 then    B + C = 70.
==========================================
You said that     (A + B) + C = 100 .
 
From something else that you said, I noticed that      A + B = 80 .

So I can write        (80)    + C  =  100

Subtract 80 from each side:  C = 20
==========================================
I also noticed, from what you said, that    B + C = 70 .

So I can write                  B + 20 = 70

Subtract 20 from each side:    B  =  50
==========================================
Now I know that  C = 20  and  B = 50.

Finally, you said that           A + B + C = 100 ,

So I can write                   A + 50 + 20 = 100

Combine like terms on the left:  A + 70 = 100

Subtract  70  from each side:      A      =  30
==========================================

           <em>  A = 30</em>
<em>             B = 50</em>
<em>             C = 20</em>


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What divisor is represented by the synthetic division below?  –5 5 x + 5 x – 5
Tju [1.3M]
For this case, the dividend is given by:
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4 0
4 years ago
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If CP of an item is Rs 7000, If SP of item is Rs 9100 Find the profit percentage.​
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2 years ago
The price of 41gram apple is 10.25 rupees.then how many rupees for 1 kg apple​
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Rs. 250

Step-by-step explanation:

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3 years ago
Identify the percent, amount, and base in this problem.
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3 0
3 years ago
Round to the nearest tenth.
inessss [21]

Answer: Angle A = 53.9 degrees

Step-by-step explanation: We have a right angled triangle with two sides clearly given and one angle to be calculated. If the angle to be calculated is angle A, then having angle A as our reference angle, line AC (10 units) is the adjacent, line CB is the opposite while line AB (17 units) is the hypotenuse. Having been given the adjacent and the hypotenuse, we can now use the trigonometric ratio as follows;

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A = 53.97

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3 years ago
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