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Studentka2010 [4]
3 years ago
14

What’s the surface area of this sphere

Mathematics
2 answers:
olga_2 [115]3 years ago
5 0
314

tw :

answer with bug number
Reika [66]3 years ago
3 0

Answer:

314

Step-by-step explanation:

A=4πr^2

A= (4)(3.14)(5)^2

A=314

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Suppose you are going to form a committee of students and faculty. You have 10 total students and 11 total faculty to pick from.
zlopas [31]

Answer:

0.189

Step-by-step explanation:

We are using combination to solve for this.

C(n,r) = nCr = n!/r! (n - r)!

We have 10 total students and 11 total faculty = 21 people

Step 1

Selecting 3 students out of 10 total students

= 10× 9× 8×7×6×5×4×3×2×1/ 3×2×1 × 7×6×5×4×3×2×1/

= 120

Step 2

Select 6 faculty out of 11 faculty

11C6 = 11!/6!(11 - 6)!

= 11!/6! × 5!

= 11×10× 9× 8×7×6×5×4×3×2×1/6×5×4×3×2×1 × 5×4×3×2×1/

= 462

Step 3

Selecting 9 people out of 21 people to form a committee

21C9 = 21!/9!(21 - 9)!

= 21!/9! × 12!

= 293,930

Step 4

The fourth and final step of having a committee of 9 people =

(120 × 462)/293,930

= 55440/293,930

= 0.1886163372

Rounded to 3 decimal places = 0.189

Therefore, the probability that you select 3 students and 6 faculty = 0.189

3 0
3 years ago
Juan compró un led TV en cuotas que costó $ 76.000=. Si le falta pagar 3 cuotas y ya pagó $ 47.000, ¿Cuál es el valor de cada cu
Murrr4er [49]

Respuesta:

$ 9666. 67

Explicación paso a paso:

Costo de TV = $ 76,000

Número de cuotas = 3

Monto ya pagado = $ 47000

Amontof cada cuota fija = Cantidad que queda por pagar / 3

Cantidad que queda por pagar = Costo de TV - Cantidad ya pagada

Cantidad que queda por pagar = $ (76000 - 47000) = $ 29000

Monto de cada cuota fija = $ 29000/3 = $ 9666. 67

7 0
3 years ago
What is an<br> equation of the line that passes through the points (-4, 2) and<br> (-8, -3)?
Katen [24]

Answer:

y = 1\frac{1}{4}x+7

Step-by-step explanation:

The equation of a straight line can be written as y=mx+b.

With the pair of coordinates (coordinates are written in the form (x,y) ) , the following can be written:

2=-4m+b

-3=-8m+b

To solve for a variable, we can use elimination:

-4m+b-(-8m+b)=2-(-3)  (subtract the second equation from the first)

-4m+b+8m-b=2+3

4m=5 (b is eliminated)

m=\frac{5}{4}

=1\frac{1}{4}

To solve for the other variable, we can use substitution:

2=-4m+b

2=-4(1\frac{1}{4})+b

2 = -5 + b

b = 7

\therefore y=1\frac{1}{4}x+7 is the linear equation for the line that passes through the points (-4, 2) and (-8,-3)

8 0
3 years ago
Subject:Mathematics ​
horrorfan [7]

Answer:F : 13 1/2

Step-by-step explanation:27 divided by 2 is 13 1/2

4 0
3 years ago
Read 2 more answers
A train traveled the first 200 miles of its trip at a speed of 50 mph and the next 130 miles at a speed of 65 mph. What was the
12345 [234]
55 miles per hour, to answer questions like these you need to calculate the time (T=D/R) for each individual portion of the trip, add the time together to get total time, and then divide the total distance by the total time in order to get the average velocity in mph.
4 0
3 years ago
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