X=12.5
If the perimeter is 90
90=3x+3x+15
Combine like terms
90=6x+15
Subtracts 15 from both sides
75=6x
Divide by six to get x by itself
12.5=x
Does this help?
Proof:
In and :
(given)
(given)
(common)
(SSS)
since they are corresponding angles of congruent triangles.
Hope this helps :)
Answer:
this thing called desmos will help you its free and easy :)
Step-by-step explanation:
The regression sum of squares (RSS) represents: a. The amount of variation in Y around its mean that the regression function can account for.
<h3>
What is regression sum of squares?</h3>
The regression sum of squares serves as the sum of the differences that exist between the predicted value and the mean of the variable.
The Sum of Squared Error however states the difference between the observed and the predictive value.
Learn more about regression sum of squares on:
brainly.com/question/19953642
#SPJ1
Answer:
x=2√2 is the answer
Step-by-step explanation:
x²=8
<em>TAKING SQUARE ROOT ON BOTH SIDES</em>
√x²=√8
x=√2×2×2
x=√2²×√2
x=2√2
i hope this will help you