A- it’s a Pythagorean triple(6, 8, 10)
The answer is 1.94, I used a calculator, just letting u know
There are 11 elements are in (A U B)
<h3>How to determine the number of elements?</h3>
The given parameters are:
n(A) = 4
n(B) = 7
The number of elements in (A U B) is calculated using:
n(A U B) = n(A) +n(B) - n(A U B)
Given that the sets have distincts elements, we have:
n(A U B) = 4 + 7 - 0
Evaluate
n(A U B) = 11
Hence, there are 11 elements are in (A U B)
Read more about sets at:
brainly.com/question/2166579
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Answer:
He should have multiplied both numbers by 100
Step-by-step explanation:
Given
See Attachment for given
Required
What's Chen error
Chen error is at step 2 where he changed 0.9 to 9.
Any changes made on the divisor must also be made on the dividend
He got 9 by multiplying 0.9 by 10;
So, his mistake is that he should have multiplied both numbers by the same number.
From the list of given options, the option that best answer this question is He should have multiplied both numbers by 100
<h3>25 =∣x - 15∣</h3>
<em>Swap the sides so that all the terms of the variables are on the left side.</em>
<h3>∣x - 15∣= 25</h3>
<em>Use the definition of absolute value.</em>
<h3>x - 15 = 25</h3><h3>x - 15 = -25</h3>
<em>Add 15 to both sides of the equation.</em>
<h3>x = 40</h3><h3>x = -10</h3>