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3 years ago

7

According to the American Heart Association considerations for selecting an exercise program should be:

2 answers:

Grace [21]3 years ago

8 0

Answer:

choose one that you are interested in and will be able to easily adapt.

Step-by-step explanation:

you should want to actually do the exercise. you shouldnt do something that you hate or that just isnt right for you

Alexandra [31]3 years ago

4 0

According to the American Heart Association considerations for selecting an exercise program should be to c<span>hoose one that you are interested in and will be able to easily adapt.
It is very important that you like the exercises you are doing, otherwise, you will throw away your money for nothing and the exercises won't yield any results. </span>

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If rstu is a rhombus, then ___________________.

ollegr [7]

a the side lengths must be = but only opposite angles must be = it COULD be a square but is could be many other things.

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3 years ago

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A bridge in the shape of an arch connects two cities separated by a river. The two ends of the bridge are located at (–7, –13) a

sdas [7]

Answer:

$y=-\dfrac{13}{49}x^2$

Step-by-step explanation:

The shape of an arch corresponds to a parabola.

the general equation for a parabola is:

$y=ax^2+bx+c$

we're given three coordinates: (-7,-13),(7,-13) and (0,0)

so we can plug these values in the general equation to make 3 separate equations:

(x,y) = (-7,-13)

$-13=a(-7)^2+b(-7)+c$

$49a-7b+c=-13$

(x,y) = (7,-13)

$-13=a(7)^2+b(7)+c$

$49a+7b+c=-13$

(x,y) = (0,0)

$0=a(0)^2+b(7)+c$

$c=0$

so we have three equations. and we can solve them simultaneously to find the values of a,b, and c.

we've already found c = 0, let's use substitute it to other equations.

$49a-7b+c=-13\quad\Rightarrow\quad49a-7b=-13$

$49a+7b+c=-13\quad\Rightarrow\quad49a+7b=-13$

we can solve these two equation using the elimination method, by simply adding the two equations

$\quad\quad49a-7b=-13\\+\quad49a+7b=-13$

------------------------------

$\quad\quad 98a=-26$

$\quad\quad a=-\dfrac{13}{49}$

Now we can plug this value of a in any of the two equations.

$49a-7b=-13$

$49\left(-\dfrac{13}{49}\right)-7b=-13$

$-13-7b=-13$

$-7b=0$

$b=0$

We have the values of a,b, and c. We can plug them in the general equation to find the equation of the arch.

$y=\left(-\dfrac{13}{49}\right)x^2+0x+0$

$y=-\dfrac{13}{49}x^2$

$49y=-13x^2$

This our equation of the arch!

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2 years ago

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kompoz [17]

Answer:

A

Step-by-step explanation:

vertex is (-3,-4)

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3 years ago

Square root of 120 over the square root of 30. what is the following quotient.

Minchanka [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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