In a group of 60 children 12 have brown eyes what percent has brown eyes
2 answers:
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<em>Answer is x + 12</em>
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<h2>Explanation:</h2>Hello! Recall that you have to write clear questions in order to get exact answers. So I'll help you assuming that the two expressions are the following:
First expression:
Second expression:
So the operation we need to perform is:
Recall some rules:
Hence:
Simplify: brainly.com/question/1291365
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Answer:
Step-by-step explanation:
1. To find the equation asked, you must add the times:
Where is the time takes Lilly in her path to work and
is the time takes Lilly in her path to home.
2. You must use the following formula of speed and solve for the time
Where n is the distance, V is the speed and t is the time.
3. You know that Lilly takes a train each day to work that averages 35 miles per hour, then, you can write the following expression:
4. And her train ride follows the same path at 45 miles per hour:
5. Then, you obtain the following equation:
Answer:
(a)First Row, First Column =1
(b)First Row, second Column =0
(c)Second Row, First Column =0
(d)Second Row, second Column =1
Step-by-step explanation:
Given matrix
The Inverse of a 2X2 matrix
can be found using the following:
Therefore:
Next, we find the product
Therefore:
(a)First Row, First Column =1
(b)First Row, second Column =0
(c)Second Row, First Column =0
(d)Second Row, second Column =1
NOTE: The multiplication of a matrix and its inverse always gives the identity matrix as seen above,