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Genrish500 [490]

2 years ago

14

A high school band needs to raise money for a new bandstand. They plan to have a dance after their next football game. Tickets c

ost $4 each. A local business donated $1,500, but the band needs at least $3,500. How many tickets will the club need to sell?

1 answer:

sleet_krkn [62]2 years ago

3 0

They will need to sell 500 tickets
3500-1500=2000
2000/4 = 500
So they will need to sell 500 tickets!

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How many times does 33 go into 112?

Vadim26 [7]

Answer:

3.3939

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1 year ago

What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Natasha2012 [34]

Answer:

$x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$ are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

$2x^2-10x-3$

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

$x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}$

General form of quadratic equation is $ax^2+bx+c$

On comparing general equation with b given equation we get

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On substituting the values in formula we get

$D=\sqrt{(-10)^2-4(2)(-3)}$

$\Rightarrow D=\sqrt{100+24}=\sqrt{124}$

Now substituting D in $x=\frac{b^2\pm\sqrt{D}}{2a}$ we get

$x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}$

$x=\frac{100\pm\sqrt{124}}{4}$

$x=\frac{100\pm2\sqrt{31}}{4}$

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Therefore, $x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$

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Read 2 more answers

Write 9 as a power of the base 3

malfutka [58]

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