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max2010maxim [7]
3 years ago
6

3x minus one over five times the quantity 10x plus 5 equals 6 Step 1: 3x – 2x – 1 = 6 Step 2: x – 1 = 6 Step 3: x – 1 – 1 = 6 –

1 Step 4: x = 5 In which step was the error made and why?
Mathematics
2 answers:
Oduvanchick [21]3 years ago
4 0

The first step, I think, because I think that they made a mistake setting up the equation. I believe that the equation should be 3x-1/5(10x+5)=6.

taurus [48]3 years ago
3 0

Answer:

The error was made in third step, because in this step 1 is subtracted instead of adding.

Step-by-step explanation:

Given equation,

3x minus one over five times the quantity 10x plus 5 equals 6

3x-\frac{1}{5}(10x+5)=6

Step 1 : Apply distributive property on the left side,

3x-2x-1=6

Step 2 : By subtraction property on the left side,

x-1=6

Step 3 : Adding 1 on the both sides ( for isolating x on left side )

x-1+1=6+1

Step 4 : Combine the like terms,

x=7

Hence, by the above explanation it is clear that there was an error in third step,

Reason : 1 is subtracted instead of adding.

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The correct answer is A!

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8 0
3 years ago
An arithmetic sequence "a" starts with 84, 77 define "a" recursively
sweet [91]

Answer:

First, let's define an arithmetic sequence:

In an arithmetic sequence, the difference between any two consecutive terms is always the same.

Then we can write it in a general way as:

aₙ = a₁ + (n - 1)*d

where:

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d is the constant difference between two consecutive terms.

a₁ is the initial term of our sequence.

Now in this case we know that the first terms of our sequence are:

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And the recursion relation is:

aₙ = aₙ₋₁ - 7

So for the n-th term, we must subtract 7 of the previous term.

4 0
3 years ago
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