All categories

3 years ago

ANSWER THREE THROUGH FIVE , ILL GIVE YOU BRAINLIST!!!

Mathematics

1 answer:

Ray Of Light [21]3 years ago

6 0

Answer:

Step-by-step explanation:

3) diameter of penny = 19 mm

r = 19/2 = 9.5 mm

Area of penny = πr²

= 3.14 * 9.5 * 9.5

= 283.385

= 283.39 mm²

Diameter of nickel = 21 mm

r = 21/2 = 10.5 mm

Area of nickel = πr²

= 3.14 * 10.5 *10.5

= 346.185

= 346.19 mm²

346.19 - 283.39 = 62.8 mm²

Area of Canadian nickel is greater than Canadian penny by 32.6 mm²

4) r = 12 mm

Area of circle = πr²

= 3.14 * 12 * 12

= 452.16 mm²

5) r = 20 cm

Area of circle = πr²

= 3.14 * 20 * 20

= 1256 cm²

You might be interested in

_____ ÷ r × r = p<br> be fast :) easy point for who ever get it

krok68 [10]

Answer:

Step-by-step explanation:

lol question unclear

5 0

2 years ago

Read 2 more answers

What is the domain of the relation {(–2, 5), (0, 0), (3, –2), (4, 6)}

babunello [35]

Answer:

second option

Step-by-step explanation:

8 0

2 years ago

From a pool of 12 candidates, the offices of president, vice-president, secretary, and treasurer will be filled. In how many dif

Romashka [77]

Answer:

11,880 different ways.

Step-by-step explanation:

We have been given that from a pool of 12 candidates, the offices of president, vice-president, secretary, and treasurer will be filled. We are asked to find the number of ways in which the offices can be filled.

We will use permutations for solve our given problem.

$^nP_r=\frac{n!}{(n-r)!}$ , where,

n = Number of total items,

r = Items being chosen at a time.

For our given scenario $n=12$ and $r=4$ .

$^{12}P_4=\frac{12!}{(12-4)!}$

$^{12}P_4=\frac{12!}{8!}$

$^{12}P_4=\frac{12*11*10*9*8!}{8!}$

$^{12}P_4=12*11*10*9$

$^{12}P_4=11,880$

Therefore, offices can be filled in 11,880 different ways.

3 0

3 years ago

Need help on this please and thank you

Ede4ka [16]

Answer:

(1,9)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

WARNING : NON SENSE ANSWER REPORT TO MODERATOR

Rzqust [24]

Answer:

$\frac{180}{147}$

Step-by-step explanation:

Simplify $(\frac{3}{-7} - \frac{11}{21} )$

$=> \frac{(-3 \times 3) - 11}{21}$

$=> \frac{-9 - 11}{21}$

$=> \frac{-20}{21}$

Find the additive inverse of $\frac{-20}{21}$ by using its property - <em>"Sum of a number & its additive inverse is always zero". </em>Assume that 'x' is an additive inverse of $\frac{-20}{21}$ .