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3 years ago

7

Rocco is making goat food cups to be sold in a petting zoo. He has 8 apples, which is only of what he needs to make enough food

cups for the morning visitors. How many apples does Rocco need?
10 apples
14 apples
16 apples
12 apples

2 answers:

Volgvan3 years ago

5 0

You would need 16apples

lyudmila [28]3 years ago

3 0

Your paragraph didnt make sense

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two stores sell the same computer for the same orginal price. store a advertises that the computer is 25% off the orginal price.

Gnoma [55]

That means that the discounts are the same
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multiply both sides by 4 or divide both sides by 0.25
original=720

the equation is
0.25 times original=180

and the original price is $720

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3 years ago

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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padilas [110]

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Three sides of a kite measure 8 inches, 10 inches, and 8 inches. What is the perimeter of the kite?

olganol [36]

Answer:

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Step-by-step explanation:

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