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3 years ago

14

A store sold 650 bicycles last year this year the store sold 572 bicycles what is the percent decrease in the number of bicycles

sold from last year to this year?

1 answer:

Stels [109]3 years ago

3 0

Answer: 12%

How?

572/650=?/100
572 divided by 650= 88
100-88=12

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Un submarino se encuentra 50m por debajo del nivel del mar y comienza a subir 2m cada 5 minutos ¿a que profundidad se encuentra

Trava [24]

Answer:

a) El submarino se encuentra a una profundidad de 26 metros una hora después de haber comenzado el ascenso.

b) Al submarino le falta 1 hora y 5 minutos para llegar a la superficie.

Step-by-step explanation:

a) De acuerdo con el enunciado, la cantidad de metros ascendidos por el submarino es directamente proporcional al tiempo, entonces la profundidad del submarino a la hora de haber comenzado el ascenso se obtiene mediante la siguiente relación lineal:

$h = 50\,m - \frac{2\,m}{5\,min}\times 60\,min$

$h = 26\,m$

El submarino se encuentra a una profundidad de 26 metros una hora después de haber comenzado el ascenso.

b) En primer lugar, calculamos el tiempo total del viaje mediante la siguiente relación:

$\frac{2\,m}{5\,min} = \frac{50\,m}{t}$

$t = 50\,m\times \frac{5\,min}{2\,m}$

$t = 125\,min$ ( $2\,h\,5\,min$ )

El tiempo faltante para alcanzar la superficie se calcula mediante la siguiente sustracción:

$\Delta t = 125\,min - 60\,min$

$\Delta t = 65\,min$ ( $1\,h\,5\,min$ )

Al submarino le falta 1 hora y 5 minutos para llegar a la superficie.

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2 years ago

Need help. How do I do this

lara [203]

9514 1404 393

Answer:

b

Step-by-step explanation:

Use the distance formula with the two points Q and P, then simplify and match the pattern of the answer.

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\d=\sqrt{(b-0)^2+(-c-(-a))^2}\\\\\boxed{d=\sqrt{b^2+(-c+a)^2}}$

The value b goes in the green box.

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2 years ago

Type the correct answer in the box. Use numerals instead of words.

vazorg [7]

Answer:

30%

Step-by-step explanation:

plato

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3 years ago

A goat enclosure is in the shape of a right triangle. One leg of the enclosure is built against the side of the barn. The other

Sonbull [250]

Answer:

The lengths are

8 + 8[root]3 , 12 + 8[root]3 and 20 + 8[root]3.

Step-by-step explanation:

Let the side against the barn be xft

We were told that the adjacent side is 4ft more than the side against the barn. This means it has a length of (x + 4)ft.

Lastly, we are told that the hypotenuse is 8ft longer than the side along the barn I.e (x + 4 + 8)ft = ( x + 12)ft.

Since the three lengths form a triangle, the square of the hypotenuse equals the square of the adjacent side plus the square of the opposite side. This is the pythagoras' theorem.

Mathematically, this can be written as follows:

(x + 12)^2 = x^2 + (x + 4)^2

This yields x^2 + 24x + 144 = x^2 + x^2 + 8x + 16

x^2 + 24x + 144 = 2x^2 + 8x + 16

Rearranging this will yield:

x^2 - 16x - 128 = 0

Using the quadratic formula yields the following values for x :

8 - 8[root]3 and 8 + 8[root 3]

Since the first is negative, we discard it and the only correct value of x is 8 + 8[root]3

Now the other length is 12 + 8[root]3 and 20 + 8[root]3.

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NeX [460]

Answer:

Step-by-step:

It takes him 1.4 minutes to read one page.

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3 years ago