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3 years ago

On a map, the distance of two inches is equal to ten miles. How many miles does 4 inches represent on the map?

Mathematics

1 answer:

dybincka [34]3 years ago

6 0

20 miles is the answer

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Determine whether f(x) = –5x^2 – 10x + 6 has a maximum or a minimum value.

Blizzard [7]

First,

We are dealing with parabola since the equation has a form of,

$y=ax^2+bx+c$

Here the vertex of an up - down facing parabola has a form of,

$x_v=-\dfrac{b}{2a}$

The parameters we have are,

$a=-5,b=-10, c=6$

Plug them in vertex formula,

$x_v=-\dfrac{-10}{2(-5)}=-1$

Plug in the $x_v$ into the equation,

$y_v=-5(-1)^2-10(-1)+6=11$

We now got a point parabola vertex with coordinates,

$(x_v, y_v)\Longrightarrow(-1,11)$

From here we emerge two rules:

If $a$ then vertex is max value
If $a>0$ then vertex is min value

So our vertex is minimum value since,

$a=-5\Longleftrightarrow a$

Hope this helps.

r3t40

7 0

3 years ago

Chandra wants to cover the entire face of the clock with a special gold foil.

Lyrx [107]

120 square inches because a circle is 360 degrees so there will be 6 60 degree sections in it and each 60 degree section needs 20 square inches to cover it so 6 x 20= 120

3 0

3 years ago

Read 2 more answers

"calculate the number of permutations possible when using the first five letters of the alphabet to create 3-letter words.

Hitman42 [59]

That is 5! / (5-3)! = 120 / 2 = 60 answer

5 0

3 years ago

Choose the correct formula to find the area of the oblique ABC shown below. Select all that apply. Select ALL TRUE statements.

serious [3.7K]

These two are true:
<span>Area of ABC = a × b × sinC
Area of ABC = × c × b × sinA

</span>

7 0

3 years ago

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18. At the movie theater, the 7:00 showing sold 75% of the tickets available.

attashe74 [19]

Answer:

$\color{red}\rule{10pt}{10pt} \color{pink}\rule{10pt}{10pt}\color{yellow}\rule{10pt}{10pt}\color{blue}\rule{10pt}{10pt}\color{green}\rule{10pt}{10pt}\color{royalblue}\rule{10pt}{10pt}\color{black}\rule{10pt}{10pt}\color{white}\rule{10pt}{10pt}\color{purple}\rule{10pt}{10pt}\color{magenta}\rule{10pt}{10pt}\color{orange}\rule{10pt}{10pt}\color{brown}\rule{10pt}{10pt}\color{lime}\rule{10pt}{10pt}$

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3 years ago