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Setler [38]
3 years ago
10

Pls help ASAP I DONT have time

Mathematics
2 answers:
irga5000 [103]3 years ago
7 0

Answer:

c

Step-by-step explanation:

I think its because 5x2=10 and then its three dollars times the amount of eggs he buys. Im not entirely sure though

larisa86 [58]3 years ago
3 0

Answer:

C

Step-by-step explanation:

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72 dessert options available

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3*6*4=72

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Step-by-step explanation:

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Solve the system of equations.<br> 13x – 6y = 22<br> x = y + 6
GrogVix [38]

Answer:

y=-8\\x=-2

Step-by-step explanation:

13x-6y=22\\x=y+6

Replace x in the first equation.

13x-6y=22\\13(y+6)-6y=22\\13y+78-6y=22\\7y+78=22\\7y=22-78\\7y=-56\\y=\frac{-56}{7}\\ y=-8

Now replace y in any of the equations to find x.

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6 0
3 years ago
Read 2 more answers
Using calculus, you can find a function’s maximum or minimum by differentiating and setting the result to zero. Do this for equa
Elenna [48]

Answer:

\dfrac{dx}{d\theta}=\dfrac{2v_0^2\cos2\theta}{g}

x=\dfrac{v_0^2}{g} at \theta=45

Step-by-step explanation:

x=\dfrac{v_0^2\sin2\theta}{g}

Differentiating with respect to \theta means v_0 and g are constants. So we differentiate only the \sin2\theta term.

Assume y=\sin2\theta.

Let u=2\theta.

\dfrac{du}{d\theta}=2

Also, y becomes

y=\sin u

\dfrac{dy}{du}=\cos u

By chain rule,

\dfrac{dy}{d\theta}=\dfrac{dy}{du}\cdot \dfrac{du}{d\theta}

\dfrac{dy}{d\theta}=\cos u\cdot2=2\cos u=2\cos 2\theta

Adding back the constants,

\dfrac{dx}{d\theta} = \dfrac{2v_0^2\cos2\theta}{g}

Equating this to 0,

\dfrac{dx}{d\theta}=\dfrac{2v_0^2\cos2\theta}{g}=0

\cos2\theta=0

2\theta = \cos^{-1}0=90

\theta=45

Using this value of \theta in the expression for x,

x=\dfrac{v_0^2\sin(2\times145)}{g}=\dfrac{v_0^2\sin90}{g}=\dfrac{v_0^2}{g} (since \sin90=1)

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4 years ago
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