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sveta [45]
2 years ago
15

Which expression can be used to find the volume

Mathematics
1 answer:
butalik [34]2 years ago
7 0

Well the volume of the cylinder will be equal area of base time height

V = pi(4)^2 *(12)

The formula for the volume of a sphere is V = 4/3 πr³.

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Picture attached what steps are needed plz help
aksik [14]
B.) 2p-3.50 he bought 2 shirts so 2p and than a coupon for 3.50 so subtract it from 2p and ur answer is 2p-3.50
5 0
3 years ago
John reads an equal number of pages of a book every week. The graph below shows the number of pages of the book left to read, y,
Genrish500 [490]

Answer:

John reads an equal number of pages of a book every week. The graph below shows the number of pages of the book left to read, y, after x weeks. The equation best models the relationship between x and y is y = −25x + 175

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Convert,the complex number into polar form: 4+4i
kow [346]
Z = a + bi
z = 4 + 4i

r² = a² + b²
r² = (4)² + (4)²
r² = 16 + 16
r² = 32
 r = 4√(2)
 r = 4(1.414)
 r = 5.656

cos\theta = \frac{a}{r}
cos\theta = \frac{4}{4\sqrt{2}}
cos\theta = \frac{4}{4\sqrt{2}} * \frac{\sqrt{2}}{\sqrt{2}}
cos\theta = \frac{4\sqrt{2}}{4\sqrt{4}}
cos\theta = \frac{4\sqrt{2}}{4(2)}
cos\theta = \frac{4\sqrt{2}}{8}
cos\theta = \frac{\sqrt{2}}{2}
2(cos\theta) = 2(\frac{\sqrt{2}}{2})
2cos\theta = \sqrt{2}
2cos\theta = 1.414

sin\theta = \frac{b}{r}
sin\theta = \frac{4}{4\sqrt{2}}
sin\theta = \frac{4}{4\sqrt{2}} * \frac{\sqrt{2}}{\sqrt{2}}
sin\theta = \frac{4\sqrt{2}}{4\sqrt{4}}
sin\theta = \frac{4\sqrt{2}}{4(2)}
sin\theta = \frac{4\sqrt{2}}{8}
sin\theta = \frac{\sqrt{2}}{2}
2(sin\theta) = 2(\frac{\sqrt{2}}{2})
2sin\theta = \sqrt{2}
2sin\theta = 1.414

z = a + bi
z = rcosθ + (rsinθ)i
z = r(cosθ + i sinθ)

z = 4 + 4i
z = 5.656cosθ + (5.656sinθ)i
z = 5.656(cosθ + i sinθ)
z = 5.656(cos45 + i sin45)

\theta = tan^{-1}\frac{b}{a}
\theta = tan^{-1}\frac{4}{4}
\theta = tan^{-1}(1)
\theta = 45

The polar form of 4 + 4i is approximately equal to 5.656(cos45 + i sin45).
5 0
3 years ago
Find the perimeter of this semi-circle with diameter, d = 18cm. Give your answer as an expression in terms of pi.
OLga [1]

Answer:

The perimeter of the given semi-circle in terms of \pi is

P=9\pi cm

Step-by-step explanation:

Given that the diameter of the semi-circle is 18cm

That is d=18cm

Therefore radius r=\frac{d}{2}

r=\frac{18}{2}

Therefore radius r=9cm

To find the perimeter of the semi-circle :

perimeter of the semi-circleP=\pi r

P=\pi\times 9 cm (where r=9 cm )

P=9\pi cm

The perimeter of the given semi-circle in terms of \pi is

P=9\pi cm

8 0
2 years ago
Wilbur Wright was born in 1867. His brother Orville was born in 1871. How old was each brother in 1903?
miss Akunina [59]
36 and 32, respectively.
I am the primary school student.
6 0
3 years ago
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