Answer:
120 rounding
Step-by-step explanation:
Set up a proportion, cross multiply, and solve.
3(7.2) = 4(x)
21.6 = 4x
5.4 = x
The value of x and y is 5 , 7
<h3>What is an Equation ?</h3>
An expression consists of variables , constants and mathematical operators , when equated by any other algebraic expression or a constant it becomes an equation.
The equation given in the question is
(x + 1)/2 -(y+4)/11 = 2
(x+3) /2 + (2y+3)/17 = 5
It has to be solved for x and y ,
The simplification of the equation has to be done
and the equation is
11x-2y = 41 -----------1
and
17x +4y = 113 -------------------2
to find the solution elimination method will be followed as
Multiplying equation 1 by 2 and adding the both equations
39x = 195
x = 5
Substituting this value in equation 1
55 -2y = 41
y = 7
The value of x and y is 5 , 7
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is the score of Jonathan.
<h3 /><h3>What is percentage?</h3>
Percentage, which may also be referred to as percent, is a fraction of a number out of 100%. Percentage means "per 100" and denotes a piece of a total amount.
To calculate the percentage , Use the percentage formula:
According to the question:
Sarah scored on the spelling test = 
Jonathan scored = 75%
By formulating both the values;
=
Therefore , is the score of Jonathan.
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Answer:
Step-by-step explanation:
answer is 9^2x
when u remove surd then it becomes
9^x/2*4
9^4x/2
9^2x ,hich is the answer
