Question : Write the equation without multiplication signs : 2163596
Write the equation without multiplication signs.
26) V = (4 × π × r3/3)
A) V = (4/3) × πr3
B) V = 4πr3
C) V = (4πr3/3)
D) V = (πr12/3)
Simplify.
27) 5(x + 8)
A) 5x + 40
B) 5x + 13
C) 5x + 8
D) x + 40
28) (-7)(x + 1)
A) x - 7
B) -7x + 1
C) -7x - 7
D) -7x + 7
29) -5(-2x - 7)
A) 10x - 7
B) 10x - 35
C) x + 35
D) 10x + 35
30) (6x + 3)(3)
A) 18x + 3
B) 18x - 9
C) 18x + 9
D) x + 9
31) -3(3.5x + 5)
A) -10.5x - 15
B) -10.5x + 15
C) -10.5x + 5
D) x - 15
32) 2((1/3)x - (1/3)y + (1/5))
A) (5/12)x - (5/12)y + (2/5)
B) (3/2)x - (3/2)y + (5/2)
C) (2/3)x - (2/3)y + (2/5)
D) (2/3)x - (1/3)y + (1/5)
33) -8(3x + 5y - 6z)
A) 24x - 40y + 48z
B) -24x + 40y - 48z
C) -5x - 3y - 14z
D) -24x - 40y + 48z
34) 5(2.5x - 7y - 2.7z)
A) 7.5x - 2y + 2.3z
B) 12.5x + 35y + 13.5z
C) -12.5x - 35y - 13.5z
D) 12.5x - 35y - 13.5z
35) -2(8x - 3y - 5z - 2)
A) 16x + 6y - 10z + 4
B) -16x - 6y + 10z - 4
C) 6x - 5y - 7z - 4
D) -16x + 6y + 10z + 4
36) 4(-7x - 0.7y + 6z + 0.6)
A) -3x + 3.3y + 10z + 4.6
B) -28x - 2.8y + 24z + 2.4
C) 28x - 2.8y - 24z + 2.4
D) -28x + 2.8y + 24z - 2.4
37) (1/10)(2x + 5y + 11z + (1/2))
A) (1/5)x + (11/10)y + (1/2)z + (1/20)
B) (2x + 5y + 11z + 1 /20)
C) (1/5)x + (1/2)y + (11/10)z + (1/20)
D) (3/10)x + (3/5)y + (6/5)z + (1/10)
38) The surface area of a right circular cone with radius r and length l is A = πr(r + l). Write this formula without parentheses and without multiplication signs.
A) A = πr + πl
B) A = πr + πrl
C) A = πr2 + πrl
D) A = πr2 + l
39) The area of the vertical faces of a rectangular solid with height h and base edges l and b can be expressed as A = h × 2(l + b). Write this formula without parentheses and without multiplication signs.
A) A = 2hl + b
B) A = 2hl + 2hb
C) A = 2h + lb
D) A = 2hlb
40) The volume of a spherical shell with outer radius R and inner radius r is V = (4π/3)(R3- r3). Write this formula without parentheses and without multiplication signs.
A) V = 4πR3 - 4πr3
B) V = (4πR3 - 4πr3/3)
C) V = (4πR3/3) - r3
D) V = (4πR3r3/3)
41) 2(8x + 2) + 7(x + 4)
A) 23x + 6
B) 23x + 32
C) 30x + 32
D) 48x
42) 7(2x - 2) - 4(x - 4)
A) 10x - 30
B) 10x + 2
C) 10x - 6
D) -14x + 2
43) 3(3.9x + 4) + 4(x + 2.6)
A) 15.7x + 6.6
B) 23.7x + 22.4
C) 34.1x
D) 15.7x + 22.4
44) 2(4x + y) + 5(x + y)
A) 5x + 2y + 7
B) 13x + 7y
C) 18x + 7y
D) 13x + 2y
45) 2(4x - y) - 5(x - y)
A) 3x - 7y
B) 5x - 2y - 3
C) 3x + 3y
D) 3x - 2y
46) 3(2x + 3y) + 8(x + 2y)
A) 30x + 25y
B) 14x + 25y
C) 14x + 5y
D) 10x + 5y + 3
47) -8(2x - 4y) - 3(-x + 2y)
A) -13x + 26y
B) -13x + 2y
C) -12x + 27y
D) 8x + 26y
48) 2(5x + 1.5y) + 2.8(x + 3y)
A) 12.8x + 4.5y
B) 7.8x + 4.5y + 2
C) 15.6x + 11.4y
D) 12.8x + 11.4y
49) -6(8x - 1.7y) - 2.2(-x + 3y)
A) -45.8x - 1.3y
B) -44.8x + 4.6y
C) -45.8x + 3.6y
D) -34.8x + 3.6y
50) 2(x + 2y - z) - 2(2x - y + 3z)
A) 6x + 6y - 8z
B) -2x + 6y - 8z
C) -2x + 6y + 8z
D) -2x + 2y - 8z
