The answer is 75 because if u multiply 75 by 1/3 you get 25 then 25 times 2/5 u get 10 75 is your answer
A. square root property
![3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}](https://tex.z-dn.net/?f=3x%5E2-192%3D0%5C%5Cx%5E2-66%3D0%5C%5Cx%5E2%3D66%5C%5Cx%3D%20-%5Csqrt%7B66%7D%20or%20%5Csqrt%7B66%7D)
it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format
B. factorising
![x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0 and x-3=0\\x= -2 \\x= 3](https://tex.z-dn.net/?f=x%5E2-x-6%3D0%5C%5Cx%5E2%2B2x-3x-6%3D0%5C%5C%28x%2B2%29%28x-3%29%3D0%5C%5Cx%2B2%3D0%20%20and%20%20x-3%3D0%5C%5Cx%3D%20-2%20%5C%5Cx%3D%203)
i just felt like this was easier to factorise than the other 2 options left
C. Completing the square
![x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7](https://tex.z-dn.net/?f=x%5E2-6x-7%3D0%5C%5C%28x-3%29%5E2%3D0%5C%5Cx%3D%20-1%5C%5Cx%3D%207)
same reason personal preference
D- Quadratic
![x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402](https://tex.z-dn.net/?f=x%5E2-17x-7%3D0%5C%5Cx%3D%5Cfrac%7B-%28-17%29%2B%5Csqrt%7B%28-17%29%5E2-4%281%29%28-7%29%7D%20%7D%7B2%281%29%7D%20%5C%5Cx%3D%5Cfrac%7B-%28-17%29-%5Csqrt%7B%28-17%29%5E2-4%281%29%28-7%29%7D%20%7D%7B2%281%29%7D%5C%5Cx%3D17.4%5C%5Cx%3D-0.402)
the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal
Answer:
The answer is never true
Step-by-step explanation:
Can you please give me brainliest
Answer (x is the money Harper found):
- Equation: (35 + x) = (41 - 2x)
- Solution: x = 2
I hope this helps!
<span>The first step in finding the surface area of a cone is to measure the radius of the circle part of the cone. The next step is to find the area of the circle, or base. The area of a circle is 3.14 times the radius squared (<span>πr2</span><span>). Now, you will need to find the area of the cone itself. In order to do this, you must measure the side (slant height) of the cone. Make sure you use the same form of measurement as the radius.
You can now use the measurement of the side to find the area of the cone. The formula for the area of a cone is 3.14 times the radius times the side (</span>πrl<span>).
So the surface area of the cone equals the area of the circle plus the area of the cone and the final formula is given by:</span>
<span>SA = πr2<span> + πrl</span></span><span><span>
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