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ASHA 777 [7]
3 years ago
15

30 friends are coming to my house for a cookout. 16 of them want hot dogs, 16 of them want burgers, and 11 of them want salad. 5

say they want to have both hot dogs and salad, and of these, 3 want burgers as well. 5 want only salad, and 8 want only burgers. how many people want hot dogs only? a3 b4 c16 d7 e 11 f 5
Mathematics
2 answers:
ozzi3 years ago
8 0
16 want burgers and 11 want salads, 11+16=27, 30-27=3, a3
frozen [14]3 years ago
3 0

11-5-5=1
16-3-8=5
16-5=11
5+5+3+8+5=26
30-26=4
=D 4

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balandron [24]

Assignment: \bold{Solve \ Equation: \ 3x^2+15x=18}

<><><><><><><>

Answer: \boxed{\bold{x=1,\:x=-6}}

<><><><><><><>

Explanation: \downarrow\downarrow\downarrow

<><><><><><><>

[ Step One ] Subtract 18 From Both Sides

\bold{3x^2+15x-18=18-18}

[ Step Two ] Simplify

\bold{3x^2+15x-18=0}

[ Step Three ] Solve With Quadratic Formula

Note: \bold{For\:a\:quadratic\:equation\:of\:the\:form\: ax^2+bx+c=0}

\bold{the \ solutions \ are \ x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}}

\bold{a=3,\:b=15,\:c=-18:\quad x_{1,\:2}=\frac{-15\pm \sqrt{15^2-4\cdot \:3\left(-18\right)}}{2\cdot \:3}}

<><><><><><><>

\bold{\frac{-15+\sqrt{15^2-4\cdot \:3\left(-18\right)}}{2\cdot \:3}: \ 1}

\bold{\frac{-15-\sqrt{15^2-4\cdot \:3\left(-18\right)}}{2\cdot \:3}: \ -6}

[ Step Four ] Combine Solutions

\bold{x=1,\:x=-6}

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\bold{\rightarrow Mordancy \leftarrow}

5 0
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Read 2 more answers
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Step-by-step explanation:

7 0
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nlexa [21]

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