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1 year ago

Eight less than a number is 19 __________

Mathematics

2 answers:

natali 33 [55]1 year ago

8 0

In this case x is 27. Because 27-8=19 hope that help

OlgaM077 [116]1 year ago

6 0

Answer:

x - 8 = 19

Step-by-step explanation:

in this case x is 27. because 27 - 8 = 19

hope this is what u needed!

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Please help my 10 year old nephew...

trasher [3.6K]

After, thorough research I believe that there are 265 pine trees and 0 elm trees since decidous and semi-decidous do not grow near conifers.

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3 years ago

Use differentials to estimate the amount of metal in a closed cylindrical can that is 26 cm high and 10 cm in diameter if the me

Afina-wow [57]

Answer:

The estimated amount of metal in the can is 87.96 cubic cm

Step-by-step explanation:

We can find the differential of volume from the volume of a cylinder equation given by

$V= \pi r^2 h$

Thus that way we will find the amount of metal that makes up the can.

Finding the differential.

A small change in volume is given by:

$dV =\cfrac{\partial V}{\partial h} dh + \cfrac{\partial V}{\partial r} dr$

So finding the partial derivatives we get

$dV =\pi r^2 dh + \pi 2r h dr$

$dV =\pi r^2 dh + 2\pi r h dr$

Evaluating the differential at the given information.

The height of the can is h = 26 cm, the diameter is 10 cm, which means the radius is half of it, that is r = 5 cm.

On the other hand the thickness of the side is 0.05 cm that represents dr = 0.05 cm, and the thickness on both top and bottom is 0.3 cm, thus dh = 0.3 cm +0.3 cm which give us 0.6 cm.

Replacing all those values on the differential we get

$dV =\pi 5^2 (0.6) + 2\pi (5) (26) (0.05)$

That give us

$V= 28 \pi \, cm^3$

Or in decimal value

$\boxed{dV= 87.96 \, cm^3}$

Thus the volume of metal in the can is 87.96 cubic cm.

6 0

3 years ago

How do you solve 1/4x4/7=

Sveta_85 [38]

If you would like to solve 1/4 * 4/7, you can do this using the following steps:

1/4 * 4/7 = (1 * 4) / (4 * 7) = 4/28 = 1/7

The correct result would be 1/7.

8 0

2 years ago

Read 2 more answers

(a) 34 is 85% of what number?

Tju [1.3M]

Answer:

$40$