1.-5g - 6 for g = -2
A. 4
B. 16
C. 10***
D. -13
2.Write an algebraic expression for the sum of 3 coins and c coins
A. C+3***
B. 6/3
C. 3c
D. C-3
what is the value of x is the solution of the question?
3. X - 2 = 16
A. 14
B. 18***
C. 21
D. 12
Use mental math to solve
4.Z/-12 = -5
A. 7*********
B. -60
C. -17
D. 60
5.Estimate the solution of the equation. X - 8. 1= 5.3 to the nearest whole number
A.About 13
B. About 14
C. About 4******
D. About 3
Solve the equation
6.14 = t - 44
A. -30******
B. -58
C. 30
D.58
7.-30 = j + 50
A. 80
B. 20
C. -1,500
D. -80********
8. 2.8x= -9.24
A. 12.04
B. -0.3030*****
C. -3.3
D. -12.04
9. 5.8 = z/2.2
A. 127.6
B. 0.37
C.3.7*****
D. 12.76
I posted the ones that are incorrect
1.-5g - 6 for g = -2
A. 4
B. 16
C. 10*** XXXXX
D. -13
-5(-2) - 6 = 10-6 = 4
Use mental math to solve
4.Z/-12 = -5
A. 7********* XXXX
B. -60
C. -17
D. 60
multiply both sides by -12, so z = 60
5.Estimate the solution of the equation. X - 8. 1= 5.3 to the nearest whole number
A.About 13
B. About 14
C. About 4****** XXXX
D. About 3
why estimate , just add 5.3 + 8.1 = 13.4, should be able to do mentally
so rounded should be 13 , not 14
Solve the equation
6.14 = t - 44
A. -30****** XXXXX
B. -58
C. 30
D.58
add 44 to both sides to get
58 =t
8. 2.8x= -9.24
A. 12.04
B. -0.3030***** XXX
C. -3.3
D. -12.04
9. 2.8x = -9.24
divide both sides by 2.8
x = -9.24/2.8 =-3.3
9. 5.8 = z/2.2
A. 127.6
B. 0.37
C.3.7***** XXXXX
D. 12.76
5.8 = z/2.2
multiply both sides by 2.2
z = (5.8)(2.2) = 12.76
Looks like somebody has to get going and study this stuff.