Hello from MrBillDoesMath!
Answer: x = -1
Discussion:
Let x be the unknown integer. Then
5
x^2 + 3x = 2 or
5x^2 + 3x -2 = 0 or (factoring)
(x+1) ( 5x -2) = 0
so x = -1 (the other value of x, +2/5, is not an integer)
Thank you,
MrB
21 x 155 = 3255
She read 3255 pages altogether.
180,000. When multiplying anything by ten, just add a zero to the end.
The store clerk will need to pack 8 boxes. This is because you have to divide 45 by 6 and you 7.5, but you can not split the box in half, so you need to round up since you have to pack all the shirts and you get 8.
Answer:
Step-by-step explanation:
-23 = x - 23
+23. +23
0 = x