Answer:
-2
Step-by-step explanation:
x + 3 = -(x + 1)
open the bracket
x + 3 = -x -1
x+x= -1-3
2x= -4
X = -4/2= -2
5+(1/2)x
X=48
Solve for x by simplifying both sides of the equation then isolating the variable
Answer:
60 professors and 168 lecturers
Step-by-step explanation:
What you have is a 2 equations system with 2 unknown variables.
Let X be the number of professors and Y be the number of lecturers. As the total of both is 228:
X + Y = 228
Then, as there are 5 professors for every 14 lecturers:
5 X = 14 Y or X = (14/5) Y
Replacing this last value of X on the first equation:
(14/5) Y + Y = 228
(14/5) Y + (5/5) Y = 228
(19/5) Y = 228
Y = 228 * (5/19)
Y = (228*5)/19
Y = 1140 / 19
Y = 60
Then we can find X:
X = (14/5) Y = (14/5) * 60 = 168
X = 168
:)
Answer:
Largest value of x = 7
Smallest value of x = -1
Step-by-step explanation:
To fill in the gaps:
......+(-3x)² = 7 + (-3)²
(.......-3)² = 7 + (-3)²
(.........) = ...4
...... = +4 and ...... = -4
Answer: if you’re saying she received 75 calls the first evening then she would have received 10 more then that which is 85 on the third evening and 85x3 = 255 on the second evening.
So first evening 75
Second evening 255
Third evening 85
