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3 years ago

I’m thinking the answer should be B right ??

Mathematics

1 answer:

laiz [17]3 years ago

7 0

Hello!

The formula for the volume of a sphere is $\frac{4}{3} \pi r$ ³.

Let's plug in our radius.

$\frac{4}{3} \pi (1,000)$

As we are not looking for an exact answer,we can look for an answer in terms of pi. Maybe we could multiply our fraction by 1,000.

$\frac{4000}{3} \pi$

Therefore, our answer is D.

I hope this helps!

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A club with 12 members is to choose three officers president vice-presidents and secretary-treasurer if each office is to be hel

lesya692 [45]

Answer:

12P3 = 1320

Step-by-step explanation:

How you need select three persons of a group of twelve persons, but in the selection each member of the group has a different position, then you need use a permutation

Permutation is defined how

$nPr = \frac{n!}{(n-r)!}$

In our case n = 12 and r = 3

Thus

$12P3 = \frac{12!}{(12-3)!}$

12P3 = 1320

6 0

3 years ago

A pole that is 3.5m tall casts a shadow that is 1.47m long. At the same time, a nearby tower casts a shadow that is 42.75m long.

Sonja [21]

Answer:

Therefore the height of the tower is 101.79 m.

Step-by-step explanation:

The ratio of the height of an object to the shadow of the object is always constant at certain time.

$\frac{\textrm{The height of object}}{\textrm{The shadow of the object}}= constant$

$\Rightarrow \frac{h_1}{s_1}=\frac{h_2}{s_2}$

Given that,the length of the pole is 3.5 m and it casts a shadow that is 1.47 m long.

The length of shadow that castes by a tower is 42.75 m long.

Here h₁= 3.5 m, s₁=1.47 m, h₂= ? and s₂=42.75 m

$\therefore \frac {3.5}{1.47}=\frac{h_2}{42.75}$

⇒3.5 ×42.75 = h₂× 1.47

$\Rightarrow h_2=\frac{3.5 \times 42.75}{1.47}$

⇒h₂ = 101.79 m (approx)

Therefore the height of the tower is 101.79 m.

6 0

4 years ago

Solve i need done fast please

Bogdan [553]

A- 53
B- 53
C- 127
D- 54
E- E+20
F- 59

3 0

3 years ago

What is the slope of the line graphed below? (3, 1) and (0, -5)

harina [27]

Answer:

3 However in the answer choices you gave I believe the question is incorrect

Step-by-step explanation:

(3,1) and (0,-5)

y1-y2/x1-x2

-5-1/0-3

-6/-3=3

6 0

3 years ago

Read 2 more answers

Please help!!! Thank you

denpristay [2]

Answer:

(a) is a real number as the answer is -3

(b) is not a real number as the answer is an imaginary number

Step-by-step explanation:

For (b), when you root a negative number, you will get an imaginary number which is not a real number

4 0

3 years ago