The isosceles triangle has a perimeter of 7.5 m
2 answers:
Answer:
The value of x is 2.7 and the equation used for finding the value of x is 7.5 = 2.1 + 2x.
Step-by-step explanation:
As given
The isosceles triangle has a perimeter of 7.5 m .
if the shortest side, y measures 2.1 m
In the isosceles triangle two sides of the triangle are equal .
Let us assume that the two equal sides each of length x .
Thus
Perimeter = Sum of all sides
Perimeter = x + x + y
7.5 = 2x + 2.1
7.5 - 2.1 = 2x
5.4 = 2x
x = 2.7 m
Therefore the value of x is 2.7 and the equation used for finding the value of x is 7.5 = 2.1 +2x.
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Answer:
(a) The constant of proportionality is 0.25
(b) 1 apple = $0.25
(c) $3 = 12 apples
Step-by-step explanation:
Given
Solving (a): The constant of proportionality;
For an equation:
Where
k = constant of proportionality
By comparing: to
Hence, the constant of proportionality is 0.25
Solving (b): What information does gives.
It represents the unit rate.
<em>So, it means that 1 apple costs $0.25</em>
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Solving (c): Number of apples for $3.
This means that
Substitute 3 for c in
Make n the subject