which of the following Expressions could be interpreted as "a number times negative seven added to five equals two"?
2 answers:
Answer:
It depends on how you interpret the statement.
( x * -7 ) + ( 5 - 2 )
x * ( -7 + 5 ) - 2
Step-by-step explanation:
"a number times negative seven added to five equals two"
Let's set as our number.
So the statement would translate to:
To simplify, we might try to organize things by adding some parentheses. But that's when things start to get a little.....dicey.
Depending on how you interpret the original statement, both and
can satisfy the statement.
Herein lies our problem. Which of the two expressions is correct?
Well.....both of them, actually. It just depends on how you're interpreting the statement and what options you have available.
If you can only pick one, but all of the expressions are possible options, then you're kind of stuck.
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Alright, lets get started.
Suppose first mechanic charges= x
So, second mechanic charges will be = (because total of their rates was 125)
first mechanic worked for 5 hours, and the second mechanic worked for 15 hours and together they charged a total of $1225
Means
Adding 10 x in both sides
Subtracting 1225 from both sides
Dividing 10 in both sides
x = 65
For second mecahnics rate = 125 - 65 = 60
Hence The mechanic who worked 5 hours charged $ 65 per hour, the one who worked 15 hours charged $ 60 per hour: Answer
Hope it will help :)
Answer:
<h3><em>X=14.4</em></h3><em>Step-by-step explanation:</em>
<em>As triangles are similar </em>
<em>The ratio of the sides must be equal</em>
<em>so..</em>
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<em>hope it helps...</em>
<em>have a great day!!</em>