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2 years ago

A marble is dropped into a beaker

Mathematics

1 answer:

Lapatulllka [165]2 years ago

8 0

<em>Voume of marble is 10mL</em> because when you submerged the marble in water equal volume of water flowed out.

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The recipe for cereal squares uses the ratio 20 large marshmallows to 3 cups of cereal. The ratio of mini-marshmallows to large

Nadya [2.5K]

The relationships are:

20 large marshmallows = 3 cups cereal

3 mini marshmallows = 1 large marshmallow

Therefore if there are 6 cups cereal, so we also get 40 large marshmallows. Since for every 1 large, we need 3 mini, hence:

mini marshmallows = 40 * 3 = 120

4 0

3 years ago

The dimensions of a portable kennel can be expressed as width x, length x + 0.4, and height x − 0.2? What are the dimensions of

horsena [70]

Answer:

$L=2.3\ ft\\W=1.9\ ft\\H=1.7\ ft$

Step-by-step explanation:

we know that

The volume of a portable kennel (rectangular prism) is equal to

$V=LWH$

where

$L=(x+0.4)\ ft\\W=x\ ft\\H=(x-0.2)\ ft$

$V=7.4\ ft^3$

substitute the given values in the formula of volume

$7.4=(x+0.4)(x)(x-0.2)$

Apply distributive property right side

$7.4=x(x^2-0.2x+0.4x-0.08)$

$7.4=x(x^2+0.2x-0.08)$

$7.4=x^3+0.2x^2-0.08x$

$x^3+0.2x^2-0.08x-7.4=0$

Solve the cubic equation by graphing

using a graphing tool

The solution is x=1.9

see the attached figure

Find the dimensions

substitute the value of x

$L=(1.9+0.4)=2.3\ ft\\W=1.9\ ft\\H=(1.9-0.2)=1.7\ ft$

5 0

3 years ago

Elaina Kicks A Soccer Ball With An Initial Velocity Of

VladimirAG [237]

By using the motion equations, we conclude that she will make the goal.

First, we know that the goal is 20ft away, and the position in x is given by:

$x = 28*cos(58)*t$

Let's find the time in which the ball will travel these 20 ft.

$20 = 28*cos(58)*t$

$(20)/(28*cos(58)) = t = 1.35$

So the horizontal distance is covered in 1.35 seconds, now let's see which is the height of the ball at that time.

The height equation is:

$y = -16*t^2 +28*sin(58)*t$

Evaluating in t = 1.35 we get:

$y = -16*(1.35)^2 +28*sin(58)*1.35\\\\y = 2.9$

And the goal is 5ft tall, so we can conclude that she will make the goal.

If you want to learn more about motion equations:

brainly.com/question/19365526

#SPJ1

5 0

2 years ago

Which is bigger 2.0 or 2

alekssr [168]

Answer:

both are the same

Step-by-step explanation:

2.0 = 2

hope this helps ^-^

4 0

3 years ago

Read 2 more answers

what is the equation, in point-slope form, of the line that is perpendicular and passes through the point (−4, 3)?

inn [45]

A perpendicular line has a slope of infinity. Therefore it is not possible to write the equation in point-slope form.
The equation is x = -4.

8 0

3 years ago