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spayn [35]
3 years ago
13

Find the area of the sector, rounding your answer to 1d.p. thank you for your help :3​

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
7 0

Answer:

176.7cm^2

Step-by-step explanation:

Area of circle = π ×r^2

π×15^2

and then divide by 4 because it's one quarter of a circle

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Find the difference: -2/5-(-4/5)
CaHeK987 [17]

Answer:

2/5

Step-by-step explanation:

-2/5-(-4/5) (remove the parentheses)

-2/5+4/5 (calculate)

solution: 2/5

hope this helps!

5 0
3 years ago
Identify the surface with the given vector equation. r(s, t) = s sin 4t, s2, s cos 4t
k0ka [10]

Answer:

Circular paraboloid

Step-by-step explanation:

Given ,

r(s,t)=ssin4t,s^2,scos4t

Here, these are the respective x,y,z axes components.

  • <em>Component along x axis r_i : ssin4t</em>
  • <em>Component along y axis r_j : s^2</em>
  • <em>Component along z axis r_k : scos4t</em>

We see that , from the parameterised equation , r_i^2+r_k^2=s^2sin^24t+s^2cos^24t\\r_i^2+r_k^2=s^2\\r_i^2+r_k^2=r_j

This can also be written as :

x^2+z^2=y

This is similar to an equation of a parabola in 1 Dimension.

By fixing the value of z=0,

<u><em>We get y=x^2 which is equation of a parabola curving towards the positive infinity of y-axis and in the x-y plane.</em></u>

By fixing the value of x=0,

<u><em>We get y=z^2 which is equation of a parabola curving towards positive infinity of y-axis and in the y-z plane. </em></u>

Thus by fixing the values of x and z alternatively ,  we get a <u>CIRCULAR PARABOLOID. </u>

4 0
3 years ago
EASYYY QUESTIONNN . What is the value of X?
Flauer [41]
I guess it s 30 irdk

 hope tis helps :D
6 0
3 years ago
Please help!!!!!!!!!!!!!!!!!!!!!!
Temka [501]

Answer:

bro I have no idea I'm just screwing around

Step-by-step explanation:

you ask your step sister

6 0
2 years ago
Which of the following situations can be modeled by the expression -4 + (-7)?
cupoosta [38]

Third option: Elsa lost four points on the last math quiz, and Marc lost seven points. How many total points did they lose?

5 0
3 years ago
Read 2 more answers
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