Answer:
See below.
Step-by-step explanation:
1)
So we have:

This can be interpreted as:
"There exists a natural number <em>x</em> and an integer <em>y</em> such that x² is equal to y²."
2)
So we want even numbers are in the set of integers.

This is interpreted as:
"The set of even numbers (2n such that n is an integer) is in the set of integers"
Answer:
25/72
this can be solved by finding a great common factor
168 cm²
The surface area is the combined area of all the sides of a figure.
Four sides have an area of 36 cm², so 144 cm²
Two sides have an area of 12 cm², so 24 cm²
144+24 = 168 cm²
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Answer:
y = x - 3
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (6, 3) and (x₂, y₂ ) = (4, 1)
m =
=
= 1 , then
y = x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (4, 1 )
1 = 4 + c ⇒ c = 1 - 4 = - 3
y = x - 3 ← equation of line
A ratio compares two quantities.
penguins = 8
whales = 4
8:4 , now simplify
8/4 = 2
4/4 = 1
2:1 is the ratio.
Final answer: 2:1