Answer:
Real numbers are Closed under multiplication.
Irrational numbers are Not Closed under division.
Integers are Closed under subtraction.
Positive rational numbers are Closed under addition.
Step-by-step explanation:
a) The product of any two real numbers is a real number, so the set is closed.
b) In some cases, the quotient may be rational. (√18)/(√2) = 3, for example. So, the set is not closed.
c) The difference of any two integers is an integer, so the set is closed.
d) The sum of any two positive rational numbers is a postive rational number, so the set is closed.
Sorry if its out of order but i hope it helps enough
Answer:
<h2>A = 40 cm²</h2>
Step-by-step explanation:
The formula of an area of a triangle:
<em>b</em><em> - base</em>
<em>h</em><em> - height</em>
<em />
We have <em>b = 8cm, h = 10cm</em>.
Substitute:
No, because 8-1-2 is literally 5 and 7-3 equals 4 so no because the answer don’t match
Answer:
(x + x + 3) = 24
Step-by-step explanation:
If charles has 3 more yellow than blue marbles, then it's x + 3 for the yellow, and just x for blue
Answer:
A) Maximum error = 36 cm²
B) Relative Error = 0.0267
C) percentage error = 2.67%
Step-by-step explanation:
Surface area of the cube is;
A(x) = 6x²
Where x is the length of the edge of the cube.
dA/dx = 12x
When x is small like in this case, we can write;
ΔA/Δx ≈ 12x
Thus, ΔA ≈ 12x•Δx
A) Maximum error = 12*15*0.2
Maximum error = 36 cm²
B) Relative Error = Max Error/Surface Area
Surface area = 6 x 15² = 1350
Thus,relative error = 36/1350
Relative Error = 0.0267
C) percentage error = Relative Error x 100%
percentage error = 0.0267 x 100%
percentage error = 2.67%
π
