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3 years ago

Divide 1.20m in the ratio 2:3:4

Mathematics

1 answer:

viktelen [127]3 years ago

5 0

$x = 1,2 : 9 = \frac{2}{15} \\2x:3x:4x\\ \frac{4}{15} : \frac{2}5} : \frac{8}{15}$

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What are the typical null and alternate hypotheses for a significance test on slope?

Tju [1.3M]

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2 years ago

What is the mass of a cylinder of lead with a radius of 2 centimeters and a height of 6 centimeters, given that the density of l

ycow [4]

The mass of lead cylinder is: 859.10 grams

Step-by-step explanation:

In order to find the mass of a cylinder we have to find the volume first

Given

Radius = r = 2 cm

Height = h = 6 cm

The volume of cylinder is given by:

$V = \pi r^2h$

Putting the values

$V = 3.14 * (2)^2 * 6\\= 3.14*4*6\\=75.36\ cm^3$

Now,

Density of lead per cm^3 = 11.4g

$Mass\ of\ cylinder = Volume*Density\\= 75.36*11.4\\=859.10\ grams$

The mass of lead cylinder is: 859.10 grams

Keywords: Volume, Density

Learn more about volume at:

#LearnwithBrainly

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2 years ago

We want to solve the following system of equations using the substitution method.

inna [77]

In the second equation you are given what Y equals, which is (-5x - 3). You would use this equation and plug it into the y value given in the first equation where it says 2y and solve

That would be

3x - 2(-5x - 3) = -6
3x + 10x + 6 = -6
3x + 10x = -6 - 6
13x = -12
X = -12/13

Then if you want to solve for Y you can use any equation and plug in the x-value found.

I’m going to use equation 2.

Y = -5x - 3
Y = -5(-12/13) - 3
Y = 4.615 - 3
Y = 1.615

(-12/13, 1.615)

Therefore the x-value is -12/13 and the y-value is 1.615.

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2 years ago

What is the value of x in the triangle below?

solmaris [256]

Sin 45 = 8/x
x = 11.31

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2 years ago

Can someone pls explain I need help

erastovalidia [21]

Answer: 25

Step-by-step explanation: I just entered the equation into my calculator like so.

A negative number times a negative number equals a positive number.

I hope this helps, have a nice day.

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2 years ago