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2 years ago

Estimate 874,238 – 228,759 using front-end estimation.

Mathematics

1 answer:

Vikki [24]2 years ago

4 0

i believe it is 645, 500 !

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EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER

prohojiy [21]

Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

First-order linear differential equations

kkurt [141]

Answer:

$(1)\ logy\ =\ -sint\ +\ c$

$(2)\ log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

Step-by-step explanation:

1. Given differential equation is

$\dfrac{dy}{dt}+ycost = 0$

$=>\ \dfrac{dy}{dt}\ =\ -ycost$

$=>\ \dfrac{dy}{y}\ =\ -cost dt$

On integrating both sides, we will have

$\int{\dfrac{dy}{y}}\ =\ \int{-cost\ dt}$

$=>\ logy\ =\ -sint\ +\ c$

Hence, the solution of given differential equation can be given by

$logy\ =\ -sint\ +\ c.$

2. Given differential equation,

$\dfrac{dy}{dt}\ -\ 2ty\ =\ t$

$=>\ \dfrac{dy}{dt}\ =\ t\ +\ 2ty$

$=>\ \dfrac{dy}{dt}\ =\ 2t(y+\dfrac{1}{2})$

$=>\ \dfrac{dy}{(y+\dfrac{1}{2})}\ =\ 2t dt$

On integrating both sides, we will have

$\int{\dfrac{dy}{(y+\dfrac{1}{2})}}\ =\ \int{2t dt}$

$=>\ log(y+\dfrac{1}{2})\ =\ 2.\dfrac{t^2}{2}\ + c$

$=>\ log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

Hence, the solution of given differential equation is

$log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

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3 years ago

A cube has edges measuring 5 inches. Find the surface area of the cube.

taurus [48]

It will be C. Hope this helps! Mark brainly please!

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3 years ago

Bekka wants to end her hexagonal garden with brick all's has a = the brick house who dollars prefer it how much will it cost to

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Answer:

Step-by-step explanation:

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3 years ago

An acute triangle has sides measuring 10cm and 16cm. What is the length of the third side?

Hatshy [7]

Answer: Most likely 13cm

Step-by-step explanation: <em>because it’s between 10cm and 16cm and thes no picture and set of choices so I hope this right.</em>

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1 year ago