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2 years ago

Which ones are true or false help me and ill give u the brainiest answer

Mathematics

1 answer:

Citrus2011 [14]2 years ago

3 0

Answer:

a and d

Step-by-step explanation:

The product of two numbers is greater than one of the multiples if the other multiple is greater than 1.

7/5 × 1/3 > 1/3 as 7/5 > 1 ⇒ yes

3/4 × 2/9 < 2/9 as 3/4 < 1 ⇒ no

4/3 × 2/9 > 2/9 as 4/3 > 1 ⇒ no

5/7 × 1/3 < 1/3 as 5/7 < 1 ⇒ yes

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3. The graph f(x) = -x - is shown below.

Troyanec [42]

Answer: the answer is 2

Step-by-step explanation:

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3 years ago

Evaluate the given integral by making an appropriate change of variables, where R is the region in the first quadrant bounded by

Whitepunk [10]

$\displaystyle\iint_R\sin(384x^2+486y^2)\,\mathrm dA$

Notice that Given that $R$ is an ellipse, consider a conversion to polar coordinates:

$\begin{cases}x(r,\theta)=\frac r8\cos\theta\\y(r,\theta)=\frac r9\sin\theta\end{cases}$

The Jacobian for this transformation is

$J=\begin{bmatrix}\frac18\cos\theta&-\frac r8\sin\theta\\\frac19\sin\theta&\frac r9\cos t\end{bmatrix}$

with determinant $\det J=\frac r{72}$

Then the integral in polar coordinates is

$\displaystyle\frac1{72}\int_0^{\pi/2}\int_0^1\sin(6r^2\cos^2t+6r^2\sin^2t)r\,\mathrm dr\,\mathrm d\theta=\int_0^{\pi/2}\int_0^1r\sin(6r^2)\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{\pi\sin^23}{864}}$

where you can evaluate the remaining integral by substituting $s=6r^2$ and $\mathrm ds=12r\,\mathrm dr$ .

5 0

3 years ago

I don’t need any work for it i just need the answer

Brilliant_brown [7]

The Answer would be 864mm^2

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2 years ago

Awnser me pkeaeeeeeeeeee

postnew [5]

Answer:

46.01

Step-by-step explanation:

i.e sum of all the purchases + 7% of the total purchase.

3 0

3 years ago

Alicia drove 265 miles in 5 hours. What is the average rate that she traveled?

Bumek [7]

265/5 = 53/1

53 miles per hour.

*I hope this helped!

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2 years ago

Read 2 more answers