3 years ago

Select all ratios equivalent to 4:3.

Mathematics

1 answer:

valentina_108 [34]3 years ago

5 0

Answer:

8:6 and 16:12

Step-by-step explanation:

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What is (x - 4y) (-3x - 2y) = ?

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The answer is -3x^2+10xy+8y^2

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A submarine is descending to examine the seafloor 2,100 feet below the surface. It takes the submarine 2 hours to make this desc

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Answer:

2,100 times 2

Step-by-step explanation:

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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

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By using the formula

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

LHS=RHs

Hence, y is a solution of given DE

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

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3 years ago

3. Molly bought four rose bushes for $16.40 each. Use

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Answer:

$65.60

Step-by-step explanation:

4×16.40 = 4×(16+0.40) = (4×16) + (4×0.40) = 64 + 1.60 = 65.60

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Can you help <br> me I’m not very smart

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Answer:

here u go

Step-by-step explanation:

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