What is 4x+7 and x=5

Mathematics

2 answers:

AlladinOne [14]3 years ago

7 0

We know that x = 5

Plug in 5 for x

4(5) + 7

Remember to follow PEMDAS. First multiply 4 with 5

4 x 5 = 20

Next, add 7

20 + 7 = 27

27 is your answer

hope this helps

UNO [17]3 years ago

6 0

Hope this helps you.!!!

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In order to check whether the carpenter can buy 12 '2 by 8 boards' and 14 '4 by 4 boards' , we need to plugin the $x=12$ and $y=14$ in the given inequality and see if it satisfies the condition or not or in other words (12,14) must be a solution for the inequality.