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Hatshy [7]
3 years ago
7

If sectheta=13/12 and 270°<theta<360°, then tantheta=​

Mathematics
1 answer:
Tpy6a [65]3 years ago
5 0

Answer:

this should be 450° hahah sorry if I am wrong I don't know!

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The volume of a cube is 27 cubic meters.<br> What is its surface area, in square meters?
stiks02 [169]

Step-by-step explanation:

the volume of a cube is

side³.

since the volume is 27 m³, the individual side lengths are then the cubic root of 27 = 3 m.

the surface area is 6 squares of 3×3 = 9m², so in total

9 × 6 = 54 m²

8 0
2 years ago
Sin(x2 + y2) da r , where r is the region in the first quadrant between the circles with center the origin and radii 2 and 5
sweet [91]
Converting to polar coordinates gives

\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_{\theta=0}^{\theta=\pi/2}\int_{r=2}^{r=5}\sin(r^2)r\,\mathrm dr\,\mathrm d\theta
=\displaystyle\pi\int_{r=2}^{r=5}2r\sin(r^2)\,\mathrm dr
=\displaystyle\pi\int_{r^2=4}^{r^2=25}\sin(r^2)\,\mathrm d(r^2)
=-\cos(r^2)\bigg|_{r^2=4}^{r^2=25}
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3 0
3 years ago
44 is 25% of what <br> pls help they gave me these without teaching them
Anna71 [15]

Answer:

176

Step-by-step explanation:

In order to find these kinds of problems, you need to divide the given number by the percentage in its decimal form.

25% = 0.25

44/0.25 = 176

To check your work, simply take the answer and multiply it with the percentage.

176*0.25 = 44

7 0
3 years ago
Let (12,-5) be a point on the terminal side of an angle 0. Find the values of sin e, cose, and tan
lord [1]

Answer:

Sin = -5/13

Cos = 12/13

Tan = -5/12

Step-by-step explanation:

5 0
3 years ago
I need to simplify this expression:<br> 4×4+4(5-2)+7
atroni [7]

Answer:

35

Step-by-step explanation:

4x4+4(5-2)+7

=4x4+4(3)+7

=16+12+7

=28+7

=35

7 0
3 years ago
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