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3 years ago

Can someone help please.

Mathematics

2 answers:

Kryger [21]3 years ago

8 0

Graph A is the correct answer tell me if you need a step by step explanation

olganol [36]3 years ago

8 0

The answer would be B

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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

Help me <br> How do u do this

Anna71 [15]

Answer:

second one and I don't know how to do it sorry is it a

Step-by-step explanation:

can you help me with my question

7 0

3 years ago

Find an equivalent expression to 3(4m-2)-2(m+5)

Anuta_ua [19.1K]

3(4m-2)-2(m+5)

Distribute.

12m-6-2m-10

12m-2m= 10m

-6-10= -16

10m-16

I hope this helps!
~kaikers

3 0

3 years ago

HELP HELP HELP HELP<br>show the steps too. I'll give BRAINLIEST!

natali 33 [55]

Move constant to the right-hand side and change its sign

2x^2 + 8 = -2 + 7
-2 + 7 = 5

Divide both sides of the equation by

x^2 + 4x = 5/2

Add (4/2^2) to both sides of the equation

x^2 + 4x + (4/2)^2 = 5/2 + (4/2)^2

factor the expression

(x + 4/2)^2 = 13/2

reduce the fraction by 2

(x + 2)^2 = 13/2

now solve equation for x

3 0

3 years ago

Put the following in order from smallest to largest.

Sonja [21]

Answer:

So put what is order from least to greatest we have to have something to look off, you cant expect someone to just give you the answer? this could mean something for over 1 million different questions please provide more information.

5 0

3 years ago