Answer:
I think 140
Step-by-step explanation:
180=x+30+10
x=180-40
x=140
I'm sorry, all you did was say something. We need a question if you want an answer.
Answer:-1
Step-by-step explanation:
the output of a function is the y value while the input is the x value.
so the question is asking what does the y value( output) have to be for the x value( input) to be zero.
since the graph is provided we can just look to see where the x values becomes zero ( the y axis is when all y values are zero)
we then can identify that the y intercept is -1
hope this helps!!
<h3>2) Rationalize the denominator:</h3>
![\sf \sqrt{\dfrac{15}{2} } = \dfrac{\sqrt{15} }{\sqrt{2} }](https://tex.z-dn.net/?f=%5Csf%20%20%5Csqrt%7B%5Cdfrac%7B15%7D%7B2%7D%20%7D%20%20%3D%20%5Cdfrac%7B%5Csqrt%7B15%7D%20%7D%7B%5Csqrt%7B2%7D%20%7D)
[ apply radical rule: √a × √b = √ab ]
[multiply the integers] [note: √2 × √2 is 2]
<h3>3) Solve by taking the square root:</h3>
![\sf x^2 -4 = 0 \\\\\sqrt{x^2-4} = 0\\ \\x^2 - 2^2 = 0^2 \ \quad \quad \quad \leftarrow third \ step \ should \ be \ this\\\\ (x-2)(x + 2) = 0 \\\\x = 2, x = -2 \\ \\ x = \pm 2](https://tex.z-dn.net/?f=%5Csf%20%20%20x%5E2%20-4%20%3D%200%20%5C%5C%5C%5C%5Csqrt%7Bx%5E2-4%7D%20%20%3D%200%5C%5C%20%5C%5Cx%5E2%20-%202%5E2%20%3D%200%5E2%20%20%20%5C%20%5Cquad%20%5Cquad%20%5Cquad%20%20%5Cleftarrow%20%20third%20%5C%20step%20%20%5C%20should%20%5C%20be%20%5C%20this%5C%5C%5C%5C%20%28x-2%29%28x%20%2B%202%29%20%3D%200%20%5C%5C%5C%5Cx%20%3D%202%2C%20x%20%3D%20-2%20%5C%5C%20%5C%5C%20x%20%3D%20%5Cpm%202)