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Maru [420]
3 years ago
13

Plz help!!!

Mathematics
1 answer:
prisoha [69]3 years ago
5 0
The answer is D. (2,0).

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Find the domain of the function
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Domain are those values of x for which function is defined. f(x) is not defined at x = 3. Therefore Domain is

x∈ (⁻∞, +∞) - {3}
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What times what equals -30 but also can be added together and equal -4
Step2247 [10]

Answer:

Step-by-step explanation:

xy=-30

y=-30/x

x+y=-4

x-30/x=-4

x²-30=-4x

x²+4x-30=0

x^2+4x-30=0\\x=\frac{-4\pm\sqrt{16+120} }{2} \\=\frac{-4\pm\sqrt{136} }{2} \\=-2\pm\sqrt{39} \\=-2+\sqrt{39} ,-2-\sqrt{39} \\y=\frac{-4}{-2+\sqrt{39} } ,\frac{4}{2+\sqrt{39} }correction write ~-30 ~in~place~of~-4~in~the~end

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Please answer this! 30 points
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i think light blue

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1 year ago
Use the rule for order of operations to simplify the expression as much as possible 30-2(4*9-26)=
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Find the Lateral area for the regular pyramid. (Keep it as a Square Root)
Shtirlitz [24]

1. You must apply the following formula: 


 LA=<span>1/2 ×(Perimeter of the base)(Slant length)</span>

<span>
</span>

<span> 2. The slant length is (By </span><span> the Pythagorean Theorem):</span>

<span> a</span><span>^2=b^2+c^2</span>

<span> </span><span>a= b^2+c^2</span>

<span> a</span><span>=</span><span>√(</span><span>1^2+3^2)</span>

<span> </span><span>a=√10</span>

<span>
</span>

<span> 3. </span><span>The p</span><span>erimeter of the base is:</span>

<span>
</span>

<span> </span><span>P=2+2+2+2</span>

<span> </span><span>P=8</span>

<span>
</span>

<span> 4. </span><span>Then, you have:</span>

<span>
</span>

<span> LA=</span><span>1/2 ×(Perimeter of the base)(Slant Length)</span>

<span> LA=</span><span>1/2 ×(8)(</span><span>√</span><span>10)</span>

<span> LA=</span><span>(</span><span>8√10)/2</span>

<span> LA=</span><span>4√10</span>

3 0
3 years ago
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