What is the value of z in the equation 5(2z+4)
2 answers:
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Answer:
Step-by-step explanation:
Assume that the shadow of an object in this problem is proportional to the height of the object. One can form the following ratio to describe the objects in this problem,
As per the given problem, a (6) foot person casts a (1.7) foot shadow. Therefore, one can form the following ratio,
It is given that there is a lighthouse that has a shadow of (10.2) feet, one is asked to find its height. Use the parameter (x) to represent the unknown; since the ratios are related, one can form a proportion to solve for(x).
Cross products,
Simplify,
Inverse operations,
You will read for 45 minutes if your brother reads for 15 minutes.
<em><u>Explanation</u></em>
You decide to read 30 minutes longer than your brother reads.
If your brother reads number of minutes, then 30 minutes longer than
minutes means
minutes.
As the number of minutes you read is , so the equation will be:
When your brother reads for 15 minutes, then we will just <u>plug into the above equation</u>. So.....
So, you will read for 45 minutes if your brother reads for 15 minutes.