Answer:
D. 264yards
Step-by-step explanation:
If John swam halfway across a circular pond (radius) and he has gone 132 yds, then the radius of the circular pond is 132yards.
Diameter of the pond = 2×radius of the pond
Diameter of the pond = 2×132
Diameter of the pond = 264yards
a) As the constants are equal, the situation represents a proportional relationship.
b) The constant of 2/3 cupcakes per minute means that in a minute, 2/3 of a cupcake is made.
<h3>What is a proportional relationship?</h3>
A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:
y = kx
In which k is the constant of proportionality.
In this problem, the constants for each situation are:
k = 30/45 = (30/15)/(45/15) = 2/3 = 20/30.
Since the constants are equal, the situation represents a proportional relationship.
The constant of 2/3 cupcakes per minute means that in a minute, 2/3 of a cupcake is made.
More can be learned about proportional relationships at brainly.com/question/10424180
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Answer:
Step-by-step explanation:
a² - b² = (a +b)(a - b)
9x² - 4 = (3x)² - 2²
= (3x + 2 )(3x - 2)
percent of water is: 32/80*100= 40%
Step-by-step explanation:
t=2+5×j
j=5
t=2+5×5
t=27
