Answer:
x=32°
Step-by-step explanation:
2x+3x+20=180 co interior angle
5x=180-20
x=160/5=32°
Answer:
125 cm
Step-by-step explanation:

all cube has the same length, width, height
5 * 5 * 5 = 125
Hope this helps
Answer:
1 false
2 true
3 true
4 false
5 true
Step-by-step explanation:
f(a) = (2a - 7 + a^2) and g(a) = (5 – a).
1 false f(a) is a second degree polynomial and g(a) is a first degree polynomial
When added together, they will be a second degree polynomial
2. true When we add and subtract polynomials, we still get a polynomial, so it is closed under addition and subtraction
3. true f(a) + g(a) = (2a - 7 + a^2) + (5 – a)
Combining like terms = a^2 +a -2
4. false f(a) - g(a) = (2a - 7 + a^2) - (5 – a)
Distributing the minus sign (2a - 7 + a^2) - 5 + a
Combining like terms a^2 +3a -12
5. true f(a)* g(a) = (2a - 7 + a^2) (5 – a).
Distribute
(2a - 7 + a^2) (5) – (2a - 7 + a^2) (a)
10a -35a +5a^2 -2a^2 -7a +a^3
Combining like term
-a^3 + 3 a^2 + 17 a - 35
(1) -6 x + 8 x = -46 Answer = -23
(2) w + 3/4 = w - 2/2 Answer = {}
(3) 2 x + 16 = 3(x - 9) Answer = 43
(4) Answer D)
(5) -3 x + 4 = -8 Answer x = 4
(6) C)
(7) B)
(8) C)
(9) x + 3/5=2 Answer x = 7/5
(10) 4 - 2 x = 10 Answer x= = -3
If something is wrong apologize, I hope it helps.
Hello,
(10-4x²)-(7x+?)=3x-6x²
==>10-4x²-7x-3x+6x²=?
==>?=2x²-10x+10