Hey!
RS = 15 and RT = 18. Subtract 18 from 15 to get your answer.
<em>That means your answer is 3</em>
The value of the expression 5x – 2y + (7x – y) when x = 7 and y = -2 is 90
<h3>How to evaluate the expression?</h3>
The expression is given as:
5x – 2y + (7x – y)
Substitute x = 7 and y = –2 in the above expression
5 * 7 - 2 * -2 + (7 * 7 + 2)
Evaluate the expression
90
Hence, the value of the expression 5x – 2y + (7x – y) when x = 7 and y = -2 is 90
Read more about expressions at:
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Write out the slope formula:
m = (change in y) / (change in x)
Here,
m = n-(-9) / (-6-(-2)) = (n+9 / (-4)
Now set this slope equal to -1 and solve the resulting equation for n:
(n+9) / (-4) = - 1, or (n+9) / 4 = 1, or n+9 = 4. Then n = -5.
Answer:
solution is -6/5 because:
-1/2(5x-8)=7
-5x+8/2=7
-5x+8=7*2
-5x+8=14
-5x=14-8
-5x=6
x=-6/5
Subtract the y values to one side then the numbers to the other so as x values to one side then the numbers to the other
