-5 Subtract 8 from -12 and divide -20 by 4 and get -5
Answer:
no. see below
Step-by-step explanation:
This much of Josh's working is correct:
x^2-6x=7
x^2-6x+9=7+9
(x-3)^2=16
At this point Josh apparently overlooked the fact that he needed to take the square root of both sides of the equation. Had he done that, he would have ...
x -3 = ±4
x = 3+4 . . . or . . . 3 -4
x = 7 or -1
_____
Josh reported values of x that would match ...
x -3 = ±16
He <em>violated the equal sign</em> by taking the square root on the left, and multiplying by ±1 on the right. Doing different operations on the two sides of the equation will mean the value of x is changed to something other than what you're looking for.
Answer:
90
Step-by-step explanation:
1600;is a perfect square as 40*40.
if we subtraction 90 from 1690 it is a perfect square..
The height would be 4 cubic centimeters. First, find the area of the prism's base, which is 6x5. This equals 30. Then, divide the volume by 30. 120/30=4 cubic centimeters. Hope this helped!
Answer:
0.76
Step-by-step explanation:
