Answer:
5x + 14y
Explanation:
−4x+6y−(−9x−8y)
Distribute the Negative Sign:
= −4x+6y+−1(−9x−8y)
= −4x+6y+−1(−9x)+−1(−8y)
= −4x+6y+9x+8y
Combine Like Terms:
= −4x+6y+9x+8y
= (−4x+9x)+(6y+8y)
= 5x + 14y
The number if 18-year old 12-year old students that took part in the survey is 320.
- The number of more 18-year old students than 12-year old students that spent between 25 and 35 mins on social media is 20.
<h3>What is the survey about?</h3>
Looking at the survey chart one can see that the total number of 18year old that partook of the survey are:
30 + 20 + 60 + 70 + 40 + 60 + 40
= 340
From the diagram , 18 year old = 60
12 year old = 40
The differences will be:
= 60 - 40
= 20
Therefore, The number if 18-year old 12-year old students that took part in the survey is 320 and the number of more 18-year old students than 12-year old students that spent between 25 and 35 mins on social media is 20.
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To answer this question, we would use the combination formula which is
nCr, where n is the the number of objects and r is the sample.
So n would be 10, and r would be 4, since that is what we need to group.
<span>10 choose 4 is written 10C4, or C(10,4), and equals 10!/(4!(10-4)!)=10!/(4!6!)=10*9*8*7/(1*2*3*4) = 210</span>
Answer:
8.06
Step-by-step explanation:
So for this one we are just going to take the two points (0,0) and (8,1), and plug them into the formula for distance which is d=
=8.06226
Then just round it
8.06
Answer:
3/12
Step-by-step explanation:
because because blue is on the spin wheel 3 out of 12 times and 3 is as reduced fraction as you could get because it's odd
