Find the difference (2ab+7a+1)-(8ab+9)
1 answer:
Hello.
The answer is: −6ab+7a−8
Distribute the Negative Sign:
=2ab+7a+1+−1(8ab+9)
=2ab+7a+1+−1(8ab)+(−1)(9)
=2ab+7a+1+−8ab+−9
Combine Like Terms:
=2ab+7a+1+−8ab+−9
=(2ab+−8ab)+(7a)+(1+−9)
=−6ab+7a+−8
Have a nice day
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<span><span>ab:ac=3:5
bd:cd=7:2
if cd is 5 cm then cd=2:5 then ab=3:x
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Well you can just keep adding 55 =1hr until you get to 400 the same with 45
Its adding the current number by the previous number so the next three would be 21,34,55
Answer: answer will be 72.50. To find the mean you just add up all the numbers and divide by how many numbers are there. 870.02/12=72.501666667.
