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2 years ago

A stack of 6 bricks is 2 feet high. How high is a stack of 20 bricks?

1 answer:

8 0

60.

The question gives you the fact that 6 bricks is 2 feet high.

What do you do to get from 2 to 20?
You multiply by 10.

Since you multiplied one thing by 10, you must do it to the other side so it remains balanced.

2 ft x 10ft = 20ft

6 bricks x 10 bricks = 60 bricks

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How do you get the answer for .0003 is 1/10 of?

Hitman42 [59]

0.0003 would be 1/10 of 0.00003. If you divided 0.00003 by 10 you would get 0.0003. In fraction form it is 3/10,000

Hoped this helped.

5 0

3 years ago

a toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its heigh

sdas [7]

Answer:

t = 2.11 seconds

Step-by-step explanation:

A toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its height h at any given second t is modeled by the equation:

$h=-16t^2+32t+48$

Let us assume that we need to find the time by it to reach the ground. It means h = 0

$-16t^2+32t+48=0$

The above is a quadratic equation. The value of t is given by :

$t=\dfrac{-b\pm \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-b+ \sqrt{b^2-2ac} }{2a},\dfrac{-b- \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-32+ \sqrt{(32)^2-2\times (-16)(8)} }{2\times (-16)},\dfrac{-32-\sqrt{(32)^{2}-2\times(-16)(8)}}{2\times(-16)}\\\\t=-0.11\ s, 2.11\ s$

So, it will take 2.11 seconds to reach the ground.

6 0

3 years ago

Solve the equation.<br><br> $2v+7=3$<br><br> $v=$

stepan [7]

If your equation is 2v + 7 = 3,

Subtract 7 from both sides to get 2v = -4

Then divide 2 on both sides and get v = -4/2

Then simplify to get v = $-2

6 0

2 years ago

Problema propuesto Pablo tiene un terreno con forma Su lado desigual mide 8 m y el perímetro mide 28 m. Él quiere colocar césped

jarptica [38.1K]

Responder:

74,67

Explicación paso a paso:

El monto a pagar será:

Multiplicando el perímetro por la longitud del lado desigual

Perímetro = 28 m

Lado desigual = 8

Perímetro * longitud del lado desigual

28 * 8 = 224m²

Longitud por metro cuadrado = $ 3

El monto a pagar :

224m² / 3

= 74,67

6 0

2 years ago

Convert 0.2 kg into mg

Stolb23 [73]

Answer:

The answer is 200000 milligrams

Hope that helped you

3 0

2 years ago