The answer is -48
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Answer:
<h2>x=(y-105)/7</h2>
Step-by-step explanation:
Given that the total time taken to practice is given by the expression as
y=7(15+x)
Simplifying the expression we have
y=105+7x
Solving for x (that is making x subject of formula we have)
7x=y-105
Divide both sides by 7 we have
x=(y-105)/7
Therefore the expression is
x=(y-105)/7
a)
the sum of the interior angles of a quadrilateral is 360°
so..
3x + 2x + x + 90 = 360
to find x..
3x + 2x + x + 90 = 360
3x + 2x + x = 360 - 90
6x = 270
x = 270/6
x = 45..
so x = 45
Answer:
a
Step-by-step explanation:
