





Step-by-step explanation:
A) [-3+(6-8)] - [40+(5.3-7)+20.2]
= [-3+(-2)] - [40+(-1.7)+20.2]
= [-3-2] - [40-1.7+20.2]
= [-5] - [38.3+20.2]
= [-5] - [58.5]
= -5 - 58.5
= -63.5
B) -4+[-2.6-1-(-3.4)]+(-5).(-3)+(-10)]
= -4+[-3.6+3.4]+(-15)+(-10)
= -4+[-0.2]-15-10
= -4+[-0.2]-25.
= -4-0.2-25
= -4.2-25
= -29.2
C) -22{-5+[8.3-(3.6-9)]}-(-2)(3)
= -22{-5+[8.3-(-5.4)]}-(-2)(3)
= -22{-5+[8.3+5.4]}-(-2)(3)
= -22{-5+13.7}-(-6)
= -22{8.7}+6
= -191.4+6
= -185.4
D) -9-(-2+5).[-3+(-5)-(+2)+1]
= -9-(3)[-3+(-5)-(+2)+1]
= -9-3[-3+(-5)-(+2)+1]
= -12[-3+(-5)-(+2)+1]
= -12[-3-5-2+1]
= -12[-10+1]
= -12[-9]
= 108.
E) 40{-12[4+(-6)(-5)-15.3+12]}-2
= 40{-12[4+(-30)-15.3+12]}-2
= 40{-12[4-30-15.3+12]}-2
= 40{-12[-26-15.3+12]}-2
= 40{-12[-29.3]}-2
= 40{-12-29.3}-2
= 40{-41.3}-2
= 1652-2
= 1650.
F) -21{-[-6(7-3)]-(7.6-8.3)}-89
= -21{-[-6(4)]-(7.6-8.3)}-89
= -21{-[-24]-(7.6-8.3)}-89
= -21{24-(-0.7)}-89
= -21{24+0.7}-89
= -21{24.7}-89
= -518.7-89
= -607.7
Find the area of the square first using A=bh then find the semicircle's using A=pi (r) ^2. After finding both, add them. The sum of both will be the total area.
4/3x - 1/2 = 0 Given
4/3x = 1/2 Add 1/2 to both sides
x = 3/8 Multiply each side by 3/4
It is important when doing equations like these to remember that you need to multiply by the reciprocal of the fraction, not divide by it. For example, if another you have 1/2x = 1, you need to multiply by 2/1 or 2, not divide by 1/2.
They can’t be similar. Similar triangles have congruent corresponding angles, and two angles are given on each. Neither of those correspond to another on the opposite triangle. Basically, there’s no way to have three congruent angles, so they aren’t similar.
Answer:
12x+2+6x=110(Exterior angle is equal to sum of two non adjacent angles)
18x=110-2
18x=108
x=108/18
x=6
Therefore the value of x is 6