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3 years ago

H E L P!!! Simplify the expression -4d+3-8+6+d-1

Mathematics

1 answer:

ser-zykov [4K]3 years ago

6 0

-4d+3-8+6+d-1 =

-3d + 0 =

-3d

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A TRAIN TRAVELING AT A CONSTANT RATE OF SPEED COVERS 360 KILOMETERS IN 6 HOURS WHAT IS THE SPEED OF THE TRAIN

FromTheMoon [43]

Answer:

60 km/hr

Step-by-step explanation:

Speed = distance / time

Speed = 360 km / 6 hr

Speed = 60 km/hr

5 0

3 years ago

Read 2 more answers

Show that y=cos(t)y=cos(t) is a solution to (dydt)2=1−y2(dydt)2=1−y2. Enter your answers below in terms of the independent varia

GrogVix [38]

Answer:

$(\frac{dy}{dt})^2=sin^2t$

Step-by-step explanation:

$y=cost$

DE : $(\frac{dy}{dt})^2=1-y^2$

If y is a solution of given DE then it satisfied the DE.

Differentiate w.r.t t

$\frac{dy}{dt}=-sint$

Using the formula

$\frac{d(cosx)}{dx}=-sinx$

LHS: $(\frac{dy}{dt})^2=(-sint)^2=sin^2t$

RHS

$1-y^2=1-cos^2t=sin^2t$

By using the formula

$sin^2t=1-cos^2t$

LHS=RHs

Hence, y is a solution of given DE

$(\frac{dy}{dt})^2=sin^2t$

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csf%207-5x%3D-43" id="TexFormula1" title="\sf 7-5x=-43" alt="\sf 7-5x=-43" align="absmiddle"

lukranit [14]

Answer:

$\sf\longmapsto \: x = 10$

Step-by-step explanation:

Subtract 7 from both sides:

7−5x−7=−43−7

Simplify:

−5x=−50

Divide both sides by −5:

$\sf\longmapsto \: \frac{ - 5x}{ - 5} = \frac{ - 50}{5}$

$\sf\longmapsto \: x = 10$

$\boxed{\sf Answered \: By\: Subhash}$

$\boxed{\sf Good\: luck \: for \: your \:assignment}$

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2 years ago

If 2y+2w=x, then w, in terms of x and y, is equal to

fredd [130]

Answer:

w=-y+1/2x

Step-by-step explanation:

Its literal equations, so just solve like any other variable equation. Set your w value to the equal, and isolate the said variable

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3 years ago

el dividendo en una division exacta es toma el valor de 240 halle el valor del cociente si el divisor es una unidad menor que el

baherus [9]

Tal vez deberia buscar las respuestas en internet

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3 years ago