Answer:
Jill bought 16 books and Sam bought 9 books
Step-by-step explanation:
Let the number of books that Jill bought be j.
Let the number of books that Sam bought be s.
Jill bought 7 more books than Sam:
j = 7 + s
They bought 25 books altogether:
j + s = 25
Put j = 7 + s into the second equation:
7 + s + s = 25
7 + 2s = 25
2s = 25 - 7 = 18
s = 18/2 = 9 books
Therefore:
j = 7 + s = 7 + 9
s = 16 books
Jill bought 16 books and Sam bought 9 books.
Answer:
-n + 50
Step-by-step explanation:
5n + 20 - 6n + 30
-n + 50
Answer:
tried my best!!!!!
Step-by-step explanation:
a) they eat both meat and palnts
b) it nurses its young,and feeds us beings
c) yes it is
Answer:
|x - 34| = 4
Step-by-step explanation:
Minimum height of handrail stated by the safety regulation = 30 inches
Maximum height of handrail stated by the safety regulation = 38 inches
Mean of these heights =
If a handrail having height = x
Then the difference between height of the handrail and mean height = (x - 34)
This difference should be equal to 4.
Algebraic representation for a height "x inches" will be
|x - 34| = 4
Wait what?- I’m confused was there supposed to be more?...