Evaluate the following expression: -4xy when x = 1/4 and y = -3.
1 answer:
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Hello! :)
Use a proportion to find how many seconds are needed to fold 5 shirts.
We are given that he takes 28 seconds to fold 2 shirts:
28 sec : 2 shirts
We are not given the amount of time needed for 5 shirts, which we need to solve:
x seconds : 5 shirts
Express in a fraction:
Cross multiply and simplify:
Therefore, he needs 70 seconds to fold 5 shirts.
Hello!
Answer:
The answer should have positive sign.
Step-by-step explanation:
First, you subtract by 5 from both sides of an equation.
Then, simplify and subtract by the numbers from left to right.
You divide by 6 from both sides of an equation.
Finally, divide numbers from left to right.
, which is our correct answer.
Hope this helps you!
Have a nice day! :)
-Charlie
Thank you so much!