The second statement is:
B: a + b = b + a
Which is the commutative property, so we know that this statement is true.
<h3>
Which statement is always true?</h3>
Remember that for integer numbers, we have the following properties:
- Commutative property: A + B = B + A
- Associative property: (A + B) + C = A + (B + C)
Now, in this case we know that a and b are integer numbers, first we can see that the second statement is:
B: a + b = b + a
Which is the commutative property, so we know that this statement is true.
The other 3 statements are false. You can see it by evaluating a = 0 and b = 1.
If you want to learn more about addition:
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5x + 13y = -13
13y = -5x - 13
y = -5/13x - 13/13
y = -5/13x - 1
Slope = -5/13
y-intercept = -1
Answer:
Step-by-step explanation:
perpendicular (p)= 7.7
hypotenuse (h)= 9.7
now
sin x = p / h
sin x = 7.7/9.7
x = sin ^-1( 7.7/9.7)
x = 53°
Answer: $11,970
Step-by-step explanation: 10,000 + (1) 7.00% = 11,970
Answer:
x = 20°
Step-by-step explanation:
An equilateral triangle has three equal angles of 60° each.
Since ∆BCD is an equilateral triangle, it follows that:
<CBD = <BCD = <CDB = 60°
m<ACD = 40° + <BCD
m<ACD = 40° + 60° (substitution)
m<ACD = 100°
x + m<ACD + CDB = 180° (sum of triangle)
x + 100° + 60° = 180° (substitution)
x + 160 = 180
Subtract 160 from each side
x = 180 - 160
x = 20°
