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VladimirAG [237]

2 years ago

11

Someone please help me with this

1 answer:

WINSTONCH [101]2 years ago

6 0

Answer:

<h2>download the app PHOTOMATH and right your solution</h2>

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You sold your friend a raffle ticket for $1. If his ticket is selected from the 1000 sold, he will win

ycow [4]

They are expected to win back on average 50 cents back, which is a bad investment.

3 0

3 years ago

What are the ordered pairs of the

9966 [12]

Start by writing the system down, I will use $y$ to represent $f(x)$

$y=x^2-5x+3\wedge y=-3$

Substitute the fact that $y=-3$ into the first equation to get,

$-3=x^2-5x+3$

Simplify into a quadratic form ( $ax^2+bx+c=0$ ),

$x^2-5x+6=0$

Now you can use Vieta's rule which states that any quadratic equation can be written in the following form,

$x^2+x(m+n)+mn=0$

which then must factor into

$(x+m)(x+n)=0$

And the solutions will be $m,n$ .

Clearly for small coefficients like ours $5,6$ , this is very easy to figure out. To get 5 and 6 we simply say that $m=3, n=2$ .

This fits the definition as $5=3+2$ and $6=2\cdot3$ .

So as mentioned, solutions will equal to $m=3, n=2$ but these are just x-values in the solution pairs of a form $(x,y)$ .

To get y-values we must substitute 3 for x in the original equation and then also 2 for x in the original equation. Luckily we already know that substituting either of the two numbers yields a zero.

So the solution pairs are $(2,0)$ and $(3,0)$ .

Hope this helps :)

5 0

2 years ago

pochemuha

Answer:

f(0) = 1/2

Step-by-step explanation:

At x=0, the inequality tells you ...

1/2 ≤ 1 -f(0) ≤ 1/2

That is, ...

1 - f(0) = 1/2

f(0) = 1/2

$\boxed{\lim\limits_{x\to 0}{f(x)}=\dfrac{1}{2}}$

6 0

3 years ago

Helpppppp. Pleaseeeeeeeeeeee

Irina-Kira [14]

I think it’s 0.85d, but i’m not sure

7 0

3 years ago

A shop sells chocolate, vanilla and strawberry ice creams. 45% of the ice creams sold are vanilla, and 1/4 are strawberry. What

OverLord2011 [107]

Answer:

30%

Step-by-step explanation:

Well since we know that 45% is vanilla that means we have part of our answer

Also we know we sold 1/4 strawberry which in percent that would be 25%

If we add 45% with 25% 45+25=70 then since something can only be 100%

100%-70%=30%

you sold 30% chocolate

<3 <;

6 0

2 years ago