Find the value of d such that the system of equations 15x + 10y=-11 and -9x+DT=-19
1 answer:
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<h2>Hello!</h2>
The answer is: There are a total of 16 skits in the video.
<h2>Why?</h2>From the statement, we know that the total length of the video is 101 minutes and it contains a 5-minute introduction, the rest of the minutes are short skits (which are 6 minutes long each one).
So, we need to write the following equations:
First equation:
Second equation:
Where,
So, replacing and substituting the second equation into the first equation we have:
So, there are a total of 16 skits in the video.
Let's prove it substituting "n" into the first equation:
Have a nice day!
Answer:
-12x+18x²
Step-by-step explanation:
Given:
Distributive property of multiplication under which a number is multiplied by the sum of two number, the first number can be distributed to both of those number.
∴
solving it by using distributive property
=
=
Opening parenthesis
=
Hence, -12x+18 is the result after using distributive property.