NJCTL Alg I Mid Term for Practice 100 points Leke Gashi
NJCTL Alg I Mid Term for Practice 100 points Leke Gashi
PDF 12 pages on Google Classroom pp 1-10 to do 11-12 answer key
https://drive.google.com/file/d/1Up-oWMNUWpQmPUGgwz2q_A6nt16ZqGon/view?usp=sharing
Page
1
1. a 2. a 3. b 4. b
page 2
5.d
6.
y = 3x -2
-12x + 4y = -20
c. No Solution (lines parallel, do not intersect)
page 3
10r -50 = 4r + 10 -4r -50 add 50 both sides, 4r-4r on right cancel
10r = 10 divide by 10
r = 1
8.
9.
-5 < x <= 2
10) significant digits first 2 = 5 (2300x12) = 27600 after 3rd 8.28 = 3 after 4th = 7
7
11) slope = /\y / /\ x = (-5-(-3))/(7-6)= -2/1 = -2
-2
2) 4x - 2 > 10 ; 4x -2 < -10
Page 4)
#3) 2 = 5(-3)+b ; 2= -15+b; 17=b;
y = 5x+17
C
17 = y-5x= -5x +y
A
y-17 = 5x HINT: Add 15 to both sides
y-2 = 5x+15 = 5(x+3)
D
A,C,D
4. student correct, substituted to get x, solved y
Page 5
#6 -.5(x-10) < 12
x-10 > -24; x > -14 Choice D
#7 y>x-2
#8) A,B,E 3 garments per minute = 180/hour OR MORE. (a.) 2 hours = 360 (370 better) YES (b.) 2.5 hours = 360+90 = 450 YES, c: 175<180, d.530<540,e.280>270
#9) 4y > 16+ 2x
y > 4 + x/2
a) 3 > 4 + 1? NO b. 2 > 4 + -3 YES,c. 4> 4+0? NO, d. 8> 4+5 NO
B
Page 6
Page 7
Problem 14
ANS: 0<x <=6
graph:
Problem15
15. Ans: D,F
page 8
16
16. A
17
17.
slope= /\y//\x = (-4-(-2))/(5-(-1)) = -2/6 = -1/3
y = mx +b ; -4 = (-1/3)5+b; -4 = -15/3 + b; b = -4 = -5+b; add 5 both sides
1=b;
equation: y = -x/3 +1
graph
page 9
18. write the inequality for the graph below (page 9)
Ans: x<= -3 or X>=1
4x-4 = -3x + 18? add 3x+4 both sides
7x = 22 divide by 7 both sides
x =22/7 he is NOT correct.
20.
a.
h = -16 t^2 + vt + s
add 16t^2 -vt both sides
h+16t^2-vt=s
b.
h = -16* 9^2 + 9*6
h = -16( 81)+54=54-1296=
Answer: -1242
End
PDF 12 pages on Google Classroom pp 1-10 to do 11-12 answer key
https://drive.google.com/file/d/1Up-oWMNUWpQmPUGgwz2q_A6nt16ZqGon/view?usp=sharing
Page
1
1. a 2. a 3. b 4. b
page 2
5.d
6.
y = 3x -2
-12x + 4y = -20
c. No Solution (lines parallel, do not intersect)
page 3
- Solve the equation: 5(2r – 10) = 2(2r + 5) – 2(2r + 25)
10r = 10 divide by 10
r = 1
8.
9.
-5 < x <= 2
10) significant digits first 2 = 5 (2300x12) = 27600 after 3rd 8.28 = 3 after 4th = 7
7
11) slope = /\y / /\ x = (-5-(-3))/(7-6)= -2/1 = -2
-2
2) 4x - 2 > 10 ; 4x -2 < -10
Page 4)
#3) 2 = 5(-3)+b ; 2= -15+b; 17=b;
y = 5x+17
C
17 = y-5x= -5x +y
A
y-17 = 5x HINT: Add 15 to both sides
y-2 = 5x+15 = 5(x+3)
D
A,C,D
4. student correct, substituted to get x, solved y
5. Simplify expression
7m(m2 b + r) – 5mr + 4b – 3b(4m3 + 6)
7m3 b + 7mr – 5mr + 4b – 12bm3 -18b
7m3 b + 2mr– 12bm3 -14b
Page 5
#6 -.5(x-10) < 12
x-10 > -24; x > -14 Choice D
#7 y>x-2
#8) A,B,E 3 garments per minute = 180/hour OR MORE. (a.) 2 hours = 360 (370 better) YES (b.) 2.5 hours = 360+90 = 450 YES, c: 175<180, d.530<540,e.280>270
#9) 4y > 16+ 2x
y > 4 + x/2
a) 3 > 4 + 1? NO b. 2 > 4 + -3 YES,c. 4> 4+0? NO, d. 8> 4+5 NO
B
Page 6
- -6 11. D
12. C 13. -2 (9)+12 = -18+12 = -6
Page 7
Problem 14
ANS: 0<x <=6
graph:
Problem15
15. Ans: D,F
page 8
16
16. A
17
17.
slope= /\y//\x = (-4-(-2))/(5-(-1)) = -2/6 = -1/3
y = mx +b ; -4 = (-1/3)5+b; -4 = -15/3 + b; b = -4 = -5+b; add 5 both sides
1=b;
equation: y = -x/3 +1
graph
page 9
18. write the inequality for the graph below (page 9)
Ans: x<= -3 or X>=1
7x = 22 divide by 7 both sides
x =22/7 he is NOT correct.
a.
h = -16 t^2 + vt + s
add 16t^2 -vt both sides
h+16t^2-vt=s
b.
h = -16* 9^2 + 9*6
h = -16( 81)+54=54-1296=
Answer: -1242
21.
c = 4h
45 = c+h
Page 10
45 = 4h+h = 5h; h=9; c=4h=4*9=36
chickens:36, horses:9
256.5 miles in 4.5 hours
distance = 256.5/4.5 miles x hours= 57 miles x hours
Page 11
PAGE 12
END
End
End
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