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andrey2020 [161]
3 years ago
7

Calculate the vertex of the quadratic function: y= -4^2 + 8x -9

Mathematics
1 answer:
expeople1 [14]3 years ago
6 0

Answer:

f(x)=8x-25

Step-by-step explanation:

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Samuel wants to buy cookies for his friend. The diameter of a cookie is 20 inches. What is the cookies area? Round to the neares
olya-2409 [2.1K]

Answer:

314.16

Step-by-step explanation:

Area=πr2

d=2r

Solving for Area

A=1

4πd2=1

4·π·202≈314.15927

7 0
2 years ago
If a string that is 15.5 inches long is cut into equal pieces that are 1.25 inches long, how many pieces of ribbon can be create
tamaranim1 [39]
Number created  =  15.5 / 1.25  =  12.4
8 0
2 years ago
a ski chalet offers 2 weekend packages. one package provides 2 nights and 3 meals for$280. the other provides 2 nights and 5 mea
Helga [31]


<span> <span>1st</span></span><span> formula 2n + 3m = 280
</span><span><span>
</span><span>2nd</span></span><span> formula 2n + 5m = 320
</span><span><span>
</span><span>rearrange 1st</span> formula to equal n:</span>

    <span><span>2n = -3m + 280
</span>      </span><span>n = -3/2 m + 140
</span><span><span>
</span><span>rearrange 2nd</span> formula to equal n:</span>

 <span><span>2n = -5m + 320
</span> </span><span>n = -5/2m + 160
</span><span><span> so now you have

</span>-3/2m + 140 = -5/2m + 160 </span>

<span><span>Rearrange to become:
</span> </span><span><span>-3/2m + 5/2m = 160 - 140
</span> </span><span>m = 20
</span><span>
</span>

<span>Now place 20 into the very 1st</span><span><span> equation in place of the letter m
</span> </span><span><span>2n + 3(20) = 280
</span> </span><span><span>2n + 60 = 280
</span> </span><span><span>2n = 220
</span> </span><span>n = 110
</span><span><span>
</span>so it costs $110 per night, $20 per meal</span>


8 0
3 years ago
Factor 35x + 28y im stuck on this and cannot get the answer
antoniya [11.8K]

Answer:

The answer is 7(5x+4y)

Step-by-step explanation:

Well you would have to first find what number is able to go in both numbers.

7 can go into 35 by 7·5

7 can also go into 28 by 7·4

So now we would simplify this by putting this in a distributive equation.

If you have any questions feel free to ask in the comments - Mark

4 0
3 years ago
F(x)=2x+3<br> What would the ordered pair be if x=-2?
pogonyaev
(-2;-1)
-2 is X
-1 is Y
3 0
3 years ago
Read 2 more answers
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